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Halala, Yitagesu, Samuel Tafesse, and Henok Teferi. "The Use of Dynamic Cone Penetrometer to Predict California Bearing Ratio Value of Subgrade Soils." American Journal of Civil Engineering 12, no. 5 (2024): 169–77. http://dx.doi.org/10.11648/j.ajce.20241205.12.
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California Bearing Ratio (CBR) is an indirect method mostly used to investigate the strength of subgrade material for highway design. The CBR of subgrade materials can be determined from costly and time-taking laboratory or in situ CBR tests. These limitations suggest the need for an easy and low-cost in situ direct method to estimate the CBR of subgrade materials. Dynamic cone penetration (DCP) is easy, quick, and economical in situ test in geotechnical uses. However, the use of DCP test to evaluate the CBR of subgrade material is condition specific i.e., local conditions should be considered before adopting existing correlations in engineering design. The objective of this study is therefore to develop a correlation that can predict the CBR of subgrade material from the dynamic cone penetration index (DCPI). Several laboratory and field tests including Plasticity index (PI), Liquid limit (LL) and Plastic limit (PL), in situ density, and classification (sieve analysis and hydrometer analysis), CBR (unsoaked), in situ moisture content, and DCP were conducted. The suitability of the existing model to predict CBR from DCPI was checked. The prediction model was then developed using Statistical Package for the Social Sciences (SPSS) software. The result of the SPSS analysis is log (CBR) = 2.954 – 1.496log (DCPI) with R2 = 0.943. The result shows that a good correlation exist between the dynamic cone penetration indexes (DCPI) and unsoaked CBR values.
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Pratomo, Riant Pandu, Andius Dasa Putra, Rahayu Sulistyorini, and Lusmeilia Afriani. "Hubungan Nilai CBR Laboratorium dengan Pemadatan Modified dan Nilai Dynamic Cone Pentrometer (DCP) di Lapangan." Jurnal Rekayasa Sipil dan Desain 9, no. 4 (2021): 690–702. https://doi.org/10.23960/jrsdd.v9i4.2082.
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Tanah merupakan salah satu bagian penting dalam pekerjaan konstruksi teknik sipil. Kekuatan tanah dasar sangat penting guna menopang beban konstruksi. Beberapa cara untuk mengestimasi nilai CBR adalah dengan soil grading dan data plastisitas tanah. Namun pada kenyataannya di lapangan, banyak kendala yang dihadapi maka seringkali dilakukan uji DCP (Dynamic Cone Penetrometer). Penelitian ini dilakukan untuk mengetahui persamaan hubungan antara CBR laboratorium dan DCP serta perbandingannya dengan persamaan SNI. Penelitian dilakukan dengan menguji tanah di Teluk Ratai Kabupaten Pesawaran pada tiga titik dengan pengujian CBR laboratorium (Unsoaked), DCP mould, dan DCP lapangan. Sampel tanah dipadatkan dengan variasi pemadatan 10, 25, dan 56 tumbukan dan kadar air optimum sebesar 22,95% yang didapat dari uji pemadatan dengan proctor modified. Hasil penelitian menunjukkan persamaan korelasi CBR Laboratorium dengan gd adalah y = 30,878x – 26,98 dengan korelasi persamaan CBR dan DCP didapat Log (CBR) = 2,26557 – 0,807 Log (DCP). Bila dibandingkan dengan nilai CBR hasil persamaan CBR SNI, nilai CBR dari persamaan CBR dan DCP memiliki nilai yang lebih tinggi. Kata kunci : tanah, daya dukung, CBR laboratorium, DCP lapangan.
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Kafi, Muhammad, Iswan ., Lusmeilia Afriani, and Andius Dasa Putra. "Korelasi Nilai CBR Laboratorium dan Nilai Dynamic Cone Pentrometer (DCP) terhadap kondisi eksisting di Lapangan." Jurnal Rekayasa Sipil dan Desain 9, no. 4 (2021): 763–76. https://doi.org/10.23960/jrsdd.v9i4.2148.
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Tanah dalam suatu konstruksi haruslah memiliki nilai kepadatan tanah yang tinggi, nilai kepadatan tanah yang tinggi mempengaruhi daya dukung tanah dalam memikul beban diatasnya. seringkali dilakukan uji penetrasi konus dinamis/DCP (Dynamic Cone Penetrometer). Untuk mendapatkan nilai CBR, hasil uji DCP ini dikorelasikan dengan suatu rumusan Korelasi Nilai DCP-CBR. Namun untuk mengantisipasi kekurangan dalam pengujian korelasi CBR-DCP, perlu dikoreksi dengan Rumusan Korelasi DCP-CBR dari Kementrian PUPR yang berlaku umum untuk seluruh kawasan wilayah Indonesia. Penelitian ini dilakukan dengan melakukan test DCP pada 3 titik di lapangan lalu diambil sampel tanah yang selanjutnya akan dibawa ke laboratorium untuk dilakukan uji sifat fisik tanah. Setelah semua data telah didapatkan baru menganalisi dan merumuskan rumus korelasi DCP – CBR dan dibandingkan dengan rumus korelasi. setelah di lakukan penelitian di ketahui bahwa model rumusan kolerasi DCP – CBR diteliti mempunyai rumus Log CBR = 3.2322 – 1.512 Log DCP, dimana rumus ini sudah sesuai secara umum dengan rumus kolerasi DCP – CBR dari kemetrian PU karena posisi kurva Rumus Korelasi DCP-CBR penulis sedikit diatas kurva rumus Korelasi DCP-CBR Kementrian PUPR
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Zhao, Jian Jun, and Wen Jie Zhao. "An Improved Particle Swarm Optimization Algorithm for Dynamic Power Allocation Problem." Applied Mechanics and Materials 687-691 (November 2014): 1380–84. http://dx.doi.org/10.4028/www.scientific.net/amm.687-691.1380.
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In this paper, we propose a fast multiobjective particle swarm optimization algorithm (called CBR-fMOPSO for short). In the algorithm, a case-based reasoning (CBR) technique is used to retrieve history optimization results and experts’ experience and add them into the population of multiobjective particle swarm optimization algorithm (MOPSO) in dynamic environment. The optimal solutions found by CBR-fMOPSO are used to mend the case library to improve the accuracy of solving based on CBR in next solving. The results from a suit of experiments in electric furnaces show that the proposed algorithm maintains good performances however the environment changes.
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Amaral, Imanuel Ali Nur Sinala, Irwan Lie Keng Wong, and Helen A. I. Sopacua. "Pengaruh Penambahan Pasir Pantai Pada Tanah Dengan Uji Dynamic Cone Penetrometer." Paulus Civil Engineering Journal 2, no. 4 (2021): 252–62. http://dx.doi.org/10.52722/pcej.v2i4.189.
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Penelitian ini dimaksudkan untuk mengetahui pengaruh penambahan pasir pantai pada tanah lempung terhadap uji Dynamic Cone Penetrometer (DCP). Metodologi dalam penelitian ini adalah melakukan serangkaian pengujian karakteristik tanah kemudian merancang komposisi campuran pengujian Kompaksi (Proctor Standard) untuk mendapatkan nilai kadar air optimum dan Pengujian Dynamic Cone Penetrometer. Hasil penelitian menunjukkan bahwa tanah memenuhi karakteristik sebagai tanah lempung. Dari pengujian Proctor Standard pada variasi campuran 0%, 7%, 14%, 21%, mengalami peningkatan pada kadar air optimum dan kepadatan kering makasimum. Pada kadar air optimum dengan variasi penambahan 0% yaitu kadar air optimum 21,50% dan kepadatan kering 1,36gr/cm³, variasi 7% yaitu kadar air optimum 22,97% dan kepadatan kering 1,39gr/cm³, variasi 14% yaitu kadar air optimum 23,57% dan kepadatan kering 1,46gr/cm³, variasi 21% yaitu kadar air optimum 22,60% dan kepadatan kering 1,47gr/cm³. Dari pengujian Dynamic Cone Penetrometer (DCP) mengalami peningkatan nilai CBR pada setiap penambahan variasi dari 0% sampai 21% mengalami peningkatan yaitu 0% dengan nilai CBR 4,46%, 7% dengan nilai CBR 6,26%, 14% dengan nilai CBR 7,82% dan 21% dengan nilai CBR 9,86%. Hasil dari penelitian membuktikan bahwa pasir pantai meningkatkan nilai CBR tanah sehingga dapat digunakan untuk meningkatkan daya dukung tanah lempung.
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Al-Refeai, Talal, and A. Al-Suhaibani. "Prediction of CBR Using Dynamic Cone Penetrometer." Journal of King Saud University - Engineering Sciences 9, no. 2 (1997): 191–203. http://dx.doi.org/10.1016/s1018-3639(18)30676-7.
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Triani, Dita, Bangun Pasaribu, and Jupriah Sarifah. "Hubungan Nilai CBR Laboratorium dan DCP pada Tanah yang Dipadatkan pada Pembangunan Jalan Tol Tebing Tinggi – Parapat." Journal of Education Transportation and Business 2, no. 1 (2025): 253–65. https://doi.org/10.57235/jetbus.v2i1.6354.
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Tanah merupakan salah satu unsur utama dalam pembuatan bangunan – bangunan teknik sipil,salah satunya adalah pembangunan jalan tol baru dimana untuk perencanaan perkerasannya harus diketahui nilai CBR-nya terlebih dahulu. Nilai CBR adalah perbandingan kekuatan tanah dasar atau bahan lain yang dipakai dibandingkan perkerasan bahan agregat standar (standar material). Nilai CBR dapat digunakan sebagai dasar pada perencanaan timbunan jalan selanjutnya, tergantung dari kelas jalan yang dikehendaki. Salah satu metode yang digunakan untuk mengetahui spesifikasi lapisan tanah dan kapasitas dukung lapisan sub-permukaan tanah adalah metode Dynamic Cone Penetrometer (DCP). DCP atau Dynamic Cone Penetrometer adalah alat yang digunakan untuk mengukur daya dukung tanah dasar jalan tol langsung ditempat. Judul skripsi “Hubungan nilai CBR laboratorium dan DCP pada tanah yang dipadatkan pada pembangunan jalan tol Tebing Tinggi – Parapat” ini memiliki tujuan untuk Menentukan hubungan CBR dan DCP serta membandingkannya, dengan metode sifat mekanis tanah menggunakan persamaan regresi linear. Dan Mendapatkan nilai kekuatan tanah dasar dan lapis pondasi jalan. Berdasarkan hasil analisis perhitungan yang telah dilakukan diperoleh bahwa pembangunan jalan tol Tebing tinggi – Parapat di STA. 0 + 000 s.d 30 + 000 tergolong tanah lempung, karena memiliki kadar air yang bagus. Dari analisis nilai CBR Laboratorium didapat nilai 9.95%, Hasil Perbandingan Nilai CBR Laboratorium Dan CBR Menggunakan Alat DCP (Dynamic Cone Penetrometer) Pada STA 28 + 425 terdapat perbedaan selisih sebanyak 1.31%, Pada STA 28 + 475 sebanyak 3.38 %, dan pada STA 28 + 525 sebanyak 2.06%. Data didapatkan dengan pemadatan tanah, uji CBR laboratorium dan dilanjutkan dengan DCP yang seluruh kegiatannya berada dilapangan dan dilaboratorium.
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Mejía Vera, Cristopher Alexander, Jaime Ricardo Gilces Delgado, Eduardo Humberto Ortiz Hernández, and Jimmy Jeffrey García Vínces. "Análisis comparativo de suelo de campo y laboratorio para la medición de su capacidad portante con ensayos de Valor de Soporte de California (CBR) y Cono Dinámico de Penetración (DCP) en la Universidad Técnica de Manabí." Revista de Investigaciones en Energía, Medio Ambiente y Tecnología: RIEMAT ISSN: 2588-0721 4, no. 2 (2020): 79. http://dx.doi.org/10.33936/riemat.v4i2.2491.
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 The purpose of this investigation is to determine direct correlations by means of laboratory tests for the index of resistance to the cut of the Dynamic Cone of Penetration (DCP), with the resistance to cut California Bearing Ratio (CBR) of the soil, where it presents an alternative to establish Design criteria for pavement structures, based on physical and mechanical tests, taking samples by means of soil exploration, they were subsequently processed in the laboratory demonstrating their properties where silts and clays with a high degree of plasticity predominate.
 Correlations proposed by (Van Vuuren, 1969) were taken, which experimentally mentions an equation suitable for all types of soils and the most accurate according to its reliability, the Dynamic Cone developed by (Scala, 1956), which, experimentally presents the following results in the field: The N°1 poll a 4.7% CBR, the N°2 poll a 3.61% CBR and the N°3 poll a 3.37% CBR, these mentioned parameters were obtained in a corresponding way from the DCP index of 40 mm/stroke, 50 mm/stroke, and 54 mm/stroke, in addition to laboratory tests that a more conservative parameter results were obtained for the poll N°1 a CBR of 3.98% the Poll, N°2 a CBR of 3.40% and the Poll N°3 a CBR of 3.20%.
 
 Index Terms— Dynamic Cone of Penetration (DCP), California Bearing Ratio (CBR), Poll, Correlations, Test.
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Arbianto, Reki, Teguh Yuono, and G. Gunarso. "Comparison of California Bearing Ratio (CBR) Value Based on Cone Penetration Test (CPT) and Dynamic Cone Penetrometer (DCP)." Journal of Advanced Civil and Environmental Engineering 4, no. 2 (2021): 70. http://dx.doi.org/10.30659/jacee.4.2.70-78.
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In civil engineering, land is important because as a place for building infrastructure to be built, so that the building infrastructure on it is stable, adequate carrying capacity is needed. The amount of soil bearing capacity can be determined in several ways, including the California Bearing Ratio (CBR) Field Test, Cone Penetration Test (CPT) and Dynamic Cone Penetrometer (DCP). The CBR and DCP tests are often used to determine the level of surface soil density on road structures, while CPT is usually used to determine the hard soil layer on the building structure. However, in certain situations Sondir and DCP data are often used to predict the CBR value, because the test is quite practical and efficient compared to the CBR test. CBR testing requires heavy equipment which in most small-scale projects is not available. In this study, we compared the CBR value based on the data obtained from the Sondir and DCP tests. Data collection was carried out in Surakarta and its surroundings. Based on the test results, the CBR value generated from the DCP test tends to be smaller than that from the CPT test with a ratio of 0.62: 1. This study resulted in the relationship between CBR values from the results of the CPT and DCP tests shown in the following equation: CBR (DCP) % = 0.2552 CBR(CPT) + 2.6306 and CBR (DCP) % = 0.617 CBR(CPT).
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I Gede Utama Hadi Sutrisna and Baiq Susdiana Fibrianti. "Kegiatan Pendampingan Evaluasi Pengujian Tanah Dasar Menggunakan Metode Dynamic Cone Penetrometer (DCP)." Jurnal Pengabdian Kepada Masyarakat Cahaya Mandalika (Abdimandalika) 5, no. 1 (2024): 42–48. https://doi.org/10.36312/abdimandalika.v5i1.3108.
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Jalan raya merupakan fasilitas darat sangat penting bagi kehidupan manusia saat ini, karena mempermudah untuk beraktifitas kesesuatu tempat yang dituju atau memindahkan barang ketempat tujuan menggunkan alat trasportasi darat, oleh karena itu untuk pembuatan jalan harus direncanakan dan di buat sesui perencanaan yang baik sehingga menghasilkan kwalitas jalan raya yang baik, untuk keperluan dan kebutuhannya serta kualitas dari jalan tersebut. Suatu proses perencanaan jalan raya faktor utama yang perlu dilihat adalah nilai CBR (California Bearing Ratio) dari tanah dasar tersebut karena akan berpengaruh pada tebal perkerasan rencana. Diruas jalan pemokong – serewe – kaliantan menentukan nilai CBR didapat dari pengujian DCP (Dinamic Cone Penetrometer) ini dilaksanakan pada titik – titik yang mengalami kerusakan seperti lubang jalan yang sampai terlihat tanah dasarnya di dapatkan nilai CBR STA 2+095 kanan nilai 6.83%, STA 2+825 Kanan nilai 7.98%, STA 3+555 Kanan niali 6.33%, STA 3+954 Kiri nilai 6.35%, nilai CBR tersebut masih diatas syarat CBR tanah dasar dengan nilai 6%.
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Budhianty, Happy, Rika Sylviana, Dewi Damayanti, Syahrul Al Ansari, and Angga Santoso. "PENGUKURAN NILAI CALIFORNIA BEARING RATIO (CBR) LAPIS PERKERASAN ASPAL DENGAN ALAT DYNAMIC CONE PENETROMETER (DCP)." Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil 1, no. 2 (2013): 35–43. https://doi.org/10.33558/bentang.v1i2.333.
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Generally, DCP is only used to measure the CBR value of soil. In this research, it is tried to introduce the possibility of appliance DCP to measure the CBR value of penetration macadam pavement. Examination was executed at the critical asphalt condition (in the day time, since high burden and temperature) and used 30o cone. DCP was placed directly at the above of pavement surface. The data was analyzed to become the CBR value by using MS - Excel Macro program. The result of this research, appliance the standard DCP with cone 30° applicable to measure CBR value of penetration macadam pavement. Keywords : CBR, DCP
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NTIRENGANYA, Naphtal, Babiker Basher, Elsir Suliman Ahmed, and Dr Mohammed Shallal. "Development of Correlation between Soaked CBR and In-Situ CBR Determined by DCP for Soil in the Southern Province of Rwanda." International Journal of Scientific Research and Management 8, no. 01 (2020): 314–18. http://dx.doi.org/10.18535/ijsrm/v8i01.ec02.
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In this paper, using Dynamic Cone Penetrometer (DCP), in-situ CBR tests have been carried out on 31 locations in Nyamgabe District in the Southern Province of Rwanda. The in-situ CBR results have been obtained from these tests. Thirty One tests pits were dug in the same locations and samples taken to the laboratory. Sieve Analysis, Atterburg Limits, Proctor and CBR tests were conducted on these samples. Accordingly a correlation has been developed between the In-Situ CBR using the DCP and the laboratory soaked CBR. The developed correlation helps to estimate the laboratory soaked CBR from the in-situ CBR using the DCP
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Riandana Rizky Praja and Budi Priyanto. "Korelasi Nilai CBR Laboratorium dan DCP terhadap kondisi Proyek Pembangunan Jalan Tepus – Jerukwudel II." Jurnal Informasi, Sains dan Teknologi 5, no. 02 (2022): 12–18. http://dx.doi.org/10.55606/isaintek.v5i02.58.
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Soil in a construction must have a high soil density value, a high soil density value affects the carrying capacity of the soil in carrying the load on it. dynamic cone penetration test / DCP (Dynamic Cone Penetrometer) is often performed. To get the CBR value, the DCP test results are correlated with a DCP-CBR Value Correlation formula. However, to anticipate deficiencies in the CBR-DCP correlation test, it is necessary to correct it with the DCP-CBR Correlation Formula from the Ministry of Public Works and Housing which is generally accepted for all regions of Indonesia. This research was conducted by conducting DCP tests at 8 points in the field and then taking soil samples which would then be taken to the laboratory to test the physical properties of the soil. After all the data has been obtained, then analyze and formulate the DCP – CBR correlation formula and compare it with the correlation formula. After doing the research, it is found that the DCP – CBR correlation formula model studied has the formula Log CBR = 3.2322 – 1.512 Log DCP, where this formula is generally in accordance with the DCP – CBR correlation formula from the Ministry of Public Works because of the position of the curve. slightly above the curve of the DCP-CBR Correlation formula of the Ministry of PUPR
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Daljeet, Singh1 *. J.N.Jha2 K.S.Gill3. "EFFECT OF FIELD MOISTURE CONTENT ON PENETRATION INDEX VALUE OF DYNAMIC CONE PENETROMETER IN ALLUVIAL SOIL SUBGRADES." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 6, no. 7 (2017): 327–33. https://doi.org/10.5281/zenodo.827508.
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Dynamic Cone Penetrometer is an ideal instrument for testing subgrade and embankment compaction and it in-situ California Bearing Ratio (CBR). The Dynamic Cone Penetration Index (DCPI) value has valid correlation with CBR. The relation has higher value of coefficient of determination, denoted as R<sup>2</sup>, for non-cohesive soils dry soils. The fine grained alluvial soils having some Plasticity Index (PI) value shows the lower R<sup>2</sup> value. The Various alluvial soil samples having PI value from 0 to 10 were tested for finding the moisture correction factor so that DCPI values can be correlated with In-situ CBR at different field moisture conditions.<sup> </sup>
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Nurtjahjaningtyas, Indra, Paksitya Purnama Putra, and Raffio Rasta Darmawan. "Korelasi Modulus Elastisitas Light Weight Deflectometer dan California Bearing Ratio." Berkala Forum Studi Transportasi antar Perguruan Tinggi 2, no. 3 (2024): 676–85. http://dx.doi.org/10.19184/berkalafstpt.v2i3.1285.
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Road pavement construction requires standard planning and evaluation of the foundation layer's structural strength. The commonly used standard is the California Bearing Ratio (CBR). In situ, road layer CBR value evaluation mainly uses a Dynamic Cone Penetrometer (DCP), Sand Cone, or direct CBR. Using these tools requires a lot of equipment, time, and human resources; therefore, more efficient and practical in situ tests such as Light Weight Deflectometer (LWD) are needed. This research was conducted to find any correlation between the results of the LWD test and the results of Field CBR and DCP testing on pavement road's base course. Data collection was carried out at River Side and Rich Village residential areas. From this research, it can be concluded that there is a significant correlation between the LWD modulus value and the 600 mm CBR DCP and the max CBR DCP conversion modulus, with an average coefficient of correlation 0.96 and 0.958. ABSTRAK Pekerjaan konstruksi perkerasan jalan raya membutuhkan standar dalam perencanaan dan evaluasi kekuatan struktural lapisan pondasinya. Standar yang digunakan yakni nilai California Bearing Ratio (CBR). Evaluasi nilai CBR di lapangan sebagian besar dilakukan menggunakan alat Dynamic Cone Penetrometer (DCP), Sand Cone, atau CBR langsung. Penggunaan beberapa alat ini membutuhkan peralatan, waktu, dan sumber daya manusia yang tidak sedikit, oleh karena itu diperlukan pengukuran lapangan yang lebih efisien dan praktis seperti Light Weight Deflectometer (LWD). Penelitian ini dilakukan untuk melihat bagaimana korelasi hasil pengujian alat LWD pada base course perkerasan jalan dengan pengujian CBR Lapangan dan DCP. Pengambilan data dilakukan di dua tempat yaitu perumahan River Side Bondowoso dan perumahan Rich Village Jember menggunakan ketiga alat. Hasil penelitian menunjukkan bahwa Terdapat korelasi sangat kuat antara nilai modulus LWD uji dengan modulus konversi CBR DCP max dan CBR DCP kedalaman 600 mm. Dengan rerata nilai korelasi berurut 0.958 dan 0.96.
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Wang, Cui, Yinghua Song, and Danhui Fang. "CBR-based dynamic decision-making method for emergencies." IOP Conference Series: Earth and Environmental Science 608 (December 10, 2020): 012033. http://dx.doi.org/10.1088/1755-1315/608/1/012033.
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Zabielska-Adamska, Katarzyna, and Maria J. Sulewska. "Dynamic CBR Test to Assess the Soil Compaction." Journal of Testing and Evaluation 43, no. 5 (2014): 20130256. http://dx.doi.org/10.1520/jte20130256.
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Fadel, P. J., S. Ogoh, D. E. Watenpaugh, et al. "Carotid baroreflex regulation of sympathetic nerve activity during dynamic exercise in humans." American Journal of Physiology-Heart and Circulatory Physiology 280, no. 3 (2001): H1383—H1390. http://dx.doi.org/10.1152/ajpheart.2001.280.3.h1383.
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We sought to determine whether carotid baroreflex (CBR) control of muscle sympathetic nerve activity (MSNA) was altered during dynamic exercise. In five men and three women, 23.8 ± 0.7 (SE) yr of age, CBR function was evaluated at rest and during 20 min of arm cycling at 50% peak O2uptake using 5-s periods of neck pressure and neck suction. From rest to steady-state arm cycling, mean arterial pressure (MAP) was significantly increased from 90.0 ± 2.7 to 118.7 ± 3.6 mmHg and MSNA burst frequency (microneurography at the peroneal nerve) was elevated by 51 ± 14% ( P < 0.01). However, despite the marked increases in MAP and MSNA during exercise, CBR-Δ%MSNA responses elicited by the application of various levels of neck pressure and neck suction ranging from +45 to −80 Torr were not significantly different from those at rest. Furthermore, estimated baroreflex sensitivity for the control of MSNA at rest was the same as during exercise ( P = 0.74) across the range of neck chamber pressures. Thus CBR control of sympathetic nerve activity appears to be preserved during moderate-intensity dynamic exercise.
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Chokkerd, Jirawat, Artit Udomchai, Sivarit Sultornsanee, et al. "Recalibrated Correlations between Dynamic Cone Penetrometer (DCP) Data and California Bearing Ratio (CBR) in Subgrade Soil." Eng 5, no. 3 (2024): 1173–82. http://dx.doi.org/10.3390/eng5030064.
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This study investigates the correlation between the California Bearing Ratio (CBR) and the Dynamic Cone Penetrometer (DCP) for subgrade soil analysis. The paper aims to provide practical equations for predicting CBR values from DCP test results, therefore enhancing the efficiency of soil assessments in engineering practice. By analyzing test data and proposing correlations for different soil groups, the study introduces recalibrated correlations that demonstrate high accuracy in predicting CBR values. The newly proposed equations offer reliable predictions with R2 values of 0.89, 0.92, and 0.94 for clean sand, silty sand or sandy silt, and cohesive soil, respectively. These correlations serve as valuable tools for engineers, enabling rapid and accurate CBR estimations for improved decision-making in various engineering projects.
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Aatmaj, Amol Salunke. "Adaptive Personalization: Enhancing User Engagement through Dynamic Diversification in Recommendation Systems." International Journal of Innovative Research in Computer and Communication Engineering 11, no. 8 (2023): 9. https://doi.org/10.15680/IJIRCCE.2023.1108006.
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This research paper explores the concept of Dynamic Adaptation of Diversification Strategies in Personalized Recommendation Systems to enhance user engagement and satisfaction. The study utilizes a dataset comprising user interactions and corresponding recommended items to evaluate the effectiveness of various diversification strategies, including Collaborative Filtering (CF), Content-Based Recommendation (CBR), and a Hybrid approach. Real-life examples and data-driven analysis showcase the impact of dynamic adaptation on user clicks and engagement metrics. The findings demonstrate that the Hybrid approach, which combines CF and CBR recommendations using an ensemble approach, outperforms CF and CBR individually for specific users. By continuously monitoring user interactions and adjusting diversification strategies accordingly, personalized recommendation systems can better cater to evolving user preferences, leading to increased user satisfaction and retention. This study sheds light on the potential of dynamic diversification in enhancing recommendation system performance and user experiences across diverse domains.
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Haryati, Nina, and Anna Irada La Ode Malim. "Analisa Daya Dukung Tanah Dasar (Sub Grade) Di Kecamatan Wolowa Dusun Waole I Jalan Kaulea Menggunakan Alat DCP (Dynamic Cone Penetrometer)." Jurnal Media Inovasi Teknik Sipil UNIDAYAN 11, no. 2 (2022): 89–97. http://dx.doi.org/10.55340/jmi.v11i2.988.
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Untuk perencanaan jalan faktor utama yang perlu diperhatikan adalah nilai CBR (California Bearimg Ratio) dari tanah tersebut karena akan berpengaruh pada dayang dukung tanah dasar atau ketebalan dasar tanah. Untuk menemukan nilai CBR didapatkan dari pengujian lapngan yaitu DCP (Dinamic Cone Penetrometer). Metode untuk pengujian DCP ini dilakukan di titik kiri, tengah, dan kanan setiap jarak 100 meter dengan menggunakan metode zig-zag. Penelitian ini bertujuan untuk menganalisa tentang daya dukung tanah dasar (subgrade) pada ruas jalan kaulea, desa waole kecamatan Wolowa, Kabupaten buton agar akses jalan menjadi mudah dilalui sehingga dapat membantu pengguna jalan untuk dapat lebih mudah dalam mengakses jalan tersebut. Hasil pengujian menunjukkan nilai rata-rata DCP adalah 22,02 mm, sedangkan rata-rata nilai CBR sebesar 8,88%. Nilai korelasi CBR-DDT terkecil 5,76 %, dengan DDT sebesar 8,8%. Nilai CBR desain / plan yang diperoleh memenuhi standar persyaratan nilai CBR yang telah ditetapkan sebesar 6%. Tidak perlu dilakukan pemadatan kembali di lapangan karena tidak memenuhi standar nilai CBR yang telah ditentukan dan disetujui untuk menambah perkerasan jalan.
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Norton, K. H., R. Boushel, S. Strange, B. Saltin, and P. B. Raven. "Resetting of the carotid arterial baroreflex during dynamic exercise in humans." Journal of Applied Physiology 87, no. 1 (1999): 332–38. http://dx.doi.org/10.1152/jappl.1999.87.1.332.
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Recent investigations have demonstrated that at the onset of low-to-moderate-intensity leg cycling exercise (L) the carotid baroreflex (CBR) was classically reset in direct relation to the intensity of exercise. On the basis of these data, we proposed that the CBR would also be classically reset at the onset of moderate- to maximal-intensity L exercise. Therefore, CBR stimulus-response relationships were compared in seven male volunteers by using the neck pressure-neck suction technique during dynamic exercise that ranged in intensity from 50 to 100% of maximal oxygen uptake (V˙o 2 max). L exercise alone was performed at 50 and 75%V˙o 2 max, and L exercise combined with arm (A) exercise (L + A) was performed at 75 and 100%V˙o 2 max. O2 consumption and heart rate (HR) increased in direct relation with the increases in exercise intensity. The threshold and saturation pressures of the carotid-cardiac reflex at 100% V˙o 2 max were >75% V˙o 2 max, which were in turn >50%V˙o 2 max( P < 0.05), without a change in the maximal reflex gain (Gmax). In addition, the HR response value at threshold and saturation at 75%V˙o 2 max was >50%V˙o 2 max( P < 0.05) and 100%V˙o 2 max was >75%V˙o 2 max( P < 0.07). Similar changes were observed for the carotid-vasomotor reflex. In addition, as exercise intensity increased, the operating point (the prestimulus blood pressure) of the CBR was significantly relocated further from the centering point (Gmax) of the stimulus-response curve and was at threshold during 100%V˙o 2 max. These findings identify the continuous classic rightward and upward resetting of the CBR, without a change in Gmax, during increases in dynamic exercise intensity to maximal effort.
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Erny, Erny. "Analisis Korelasi Tahanan Konus Dengan Nilai Cbr Laboratorium dan Cbr Hasil Uji Dcp Studi Kasus Indragiri Hulu dan Pekanbaru." Jurnal Health Sains 3, no. 3 (2022): 490–505. http://dx.doi.org/10.46799/jsa.v3i3.407.
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Penyelidikan tanah dibutuhkan untuk data perancangan fondasi bangunan. Penyelidikan tanah ada di lapangan Cone Penetration Test (CPT) dan California Bearing Ratio (CBR) lapangan alat Dynamic Cone Penetrometer (DCP) dan laboratorium (CBR laboratorium), peneliti sebelumnya Rahardjo (1995) memperoleh korelasi CBR dan tahanan konus (qc) pada alat CPT Pada tanah lempung yang dipadatkan CBR= ½ qc dan Schmertmann tanah pasir sebesar CBR = ⅓ qc CBR (In-situ). Berdasarkan data analisis objek penelitian di lokasi pembangunan PKS PT. Inecda (ST.03, ST.04 dan ST.05) di Indragiri Hulu dan pembangunan Jalan Nasional Propinsi Riau (STA 0+600, STA 6+000, dan STA 17+000) di Pekanbaru dengan Pelaksanaan CBR lapangan alat uji DCP sesuai Departemen Pekerjaan Umum tahun 2008 dan CBR laboratorium sesuai SNI-03-1744-1989. Klasifikasi tanah pada CPT berdasarkan cone resistant (qc) dan friction Ratio (fr) di plotkan pada gambar Robertson dan Campanella (1986). Hasil penelitian didapat korelasi CBR laboratorium dengan CBR lapangan alat uji DCP, nilai CBR alat uji yang diperoleh selalu nilai DCP lebih kecil dari CBR laboratorium, Rasio nilai CBR uji DCP berbanding CBR laboratorium berkisar 72% - 90%, dimana pada tanah lempung memiliki nilai lebih tinggi (tanah lempung rasio mendekati CBR laboratorium) dan korelasi nilai tahanan konus dengan CBR laboratorium pada penelitian nilai lebih mendekati teori Schmentmaan pasir CBR= ⅓ qc dan CBR untuk lempung Raharjo (1995) CBR= ½ qc, pada penelitian pasir 0,26 qc dan lempung 0,48 qc sedangkan CBR alat uji DCP pasir 0,21 qc dan lempung 0,42 q dan nilai perbandingan CBR/qc semakin kecil diperoleh jenis tanah baik dan semakin jelek jenis tanah yang di peroleh maka nilai CBR/qc semakin tinggi.
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Kim, Areum, Shekhar H. Deo, James P. Fisher, and Paul J. Fadel. "Effect of sex and ovarian hormones on carotid baroreflex resetting and function during dynamic exercise in humans." Journal of Applied Physiology 112, no. 8 (2012): 1361–71. http://dx.doi.org/10.1152/japplphysiol.01308.2011.
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To date, no studies have examined whether there are either sex- or ovarian hormone-related alterations in arterial baroreflex resetting and function during dynamic exercise. Thus we studied 16 young men and 18 young women at rest and during leg cycling at 50% heart rate (HR) reserve. In addition, 10 women were studied at three different phases of the menstrual cycle. Five-second pulses of neck pressure (NP) and neck suction (NS) from +40 to −80 Torr were applied to determine full carotid baroreflex (CBR) stimulus response curves. An upward and rightward resetting of the CBR function curve was observed during exercise in all groups with a similar magnitude of CBR resetting for mean arterial pressure (MAP) and HR between sexes ( P > 0.05) and at different phases of the menstrual cycle ( P > 0.05). For CBR control of MAP, women exhibited augmented pressor responses to NP at rest and exercise during mid-luteal compared with early and late follicular phases. For CBR control of HR, there was a greater bradycardic response to NS in women across all menstrual cycle phases with the operating point (OP) located further away from centering point (CP) on the CBR-HR curve during rest (OP-CP; in mmHg: −13 ± 3 women vs. −3 ± 3 men; P < 0.05) and exercise (in mmHg: −31 ± 2 women vs. −15 ± 3 men; P < 0.05). Collectively, these findings suggest that sex and fluctuations in ovarian hormones do not influence exercise resetting of the baroreflex. However, women exhibited greater CBR control of HR during exercise, specifically against acute hypertension, an effect that was present throughout the menstrual cycle.
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Heldita, Dina. "ANALISIS KEPADATAN TANAH PADA RUAS JALAN MASUK KEMAKAM GURU CANTUNG KECAMATAN KELUMPANG HULU KABUPATEN KOTABARU." AL ULUM JURNAL SAINS DAN TEKNOLOGI 5, no. 1 (2019): 37. http://dx.doi.org/10.31602/ajst.v5i1.2715.
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Support for highway planning that must be determined according to the optimal traffic requirements for traffic that is in accordance with its function. Analysis of soil density on the Banian-Sungai Durian road uses a Dynamic Cone Penetrometer (DCP) tool with the aim of finding the CBR value of the soil. The value supported is to get the DCP value, the California Bearing Ratio (CBR) value, and the Land Carrying Capacity (DDT) value. Tests carried out along the 1,550 m with a width of 4m. For the point of data collection zigzag per 100 m. The test results show the average value of DCP is 29.32 mm, while the average value of CBR is 5.07%. Design CBR value is 2.24%, with DDT is 4.47%. The CBR value of the design obtained does not meet the standard CBR value requirements that have been set at 6%. It needs to be re-compacted on the ground because it does not meet the CBR value standards that have been determined and approved to add road pavement.Keywords: Land density, DCP, Field CBR, Banian Village
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Elyasi, Mohammad Reza, Daryoosh Daryaee, and Fatemeh Sarabi. "Presenting a CBR Estimation Model and Compaction Characteristics of Base Layer of Pavement Using a Dynamic Cone Penetrometer (DCP) Test." Journal of Testing and Evaluation 52, no. 4 (2024): 2335–49. http://dx.doi.org/10.1520/jte20230157.
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Abstract In general, the basis of any type of management decision-making system is a correct evaluation of the current situation, future prediction, and finally optimal decision-making. There are various field methods for road pavement evaluation, among which are destructive and nondestructive methods. One of the nondestructive testing methods is dynamic cone penetrometer (DCP) testing. The main objective of this study is to investigate the feasibility of using DCP to control the quality of pavement layers and estimate parameters such as California bearing ratio (CBR) and compaction ratio. For this purpose, DCP, CBR tests, and determination of density percentage have been used as parameters used to control the quality of pavement layers. The dynamic resistance meter or DCP is a device that is used to quickly measure the resistance of different pavement layers. This device causes a small destruction on the surface. Hence, it is also called nondestructive testing. However, to use DCP, it is necessary to measure its results with the results of prevalent and widely used tests such as CBR and to examine their relationships. In this research, the DCP, CBR, density, sieve analysis, moisture content, and Atterberg limit tests were performed on two locations (a highway under construction and a landscaping project). Then, the results of the DCP test with CBR and soil compaction ratio (R) in two different locations were investigated and the relationships between these parameters were determined. The results showed that there is a good relationship statistically between DCP and CBR parameters in both locations. Also, for the first time, a very good correlation between the R parameter and the results of the dynamic penetrometer cone test was obtained. The observations represented that the correlation coefficients are higher than 0.9 in the highway location, which had well-graded soil in comparison with the landscaping project.
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Burhanuddin, Burhanuddin, and Junaidi Junaidi. "HUBUNGAN EMPIRIS DAYA DUKUNG TANAH DASAR MENGUNAKAN ALAT DYNAMIC CONE PENETROMETER (DCP) DAN CALIFORNIA BEARING RATIO (CBR) RENDAMAN UNTUK DISAIN TEBAL PERKERASAN LENTUR JALAN RAYA." Jurnal Teknik Sipil 1, no. 3 (2018): 553–58. http://dx.doi.org/10.24815/jts.v1i3.9994.
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Abstract: Subsoil (sub grade) is the lowest layer in highway construction. The reliability of the pavement thickness design is highly dependent on the accuracy of the carrying capacity of the ground. The carrying capacity of the foundation soil known in the value of California Bearing Ratio (CBR) can be determined by Dynamic Cone Penetrometer (DCP) equipment. The working principle of DCP is very simple and economical in the field. However, since 2013 the Ministry of Public Works has issued a 2013 Pavement Design Destruction Manual (MDP) which requires the use of CBR values from laboratory test results with 4 day immersion samples. The problem that occurs is the time and cost of testing the sample. CBR immersion with 4 days of immersion will take longer. The cost of sampling, sample preparation and sample testing are also more expensive than testing with DCP tools. With this background, this study aims to find an empirical relationship between the value of ground support capacity (CBR) of both tools (DCP and CBR immersion). This research is a preliminary study of Road Laboratory of Faculty of Engineering Unsyiah and is expected to be developed by multiplying future research samples for more precise results. Empirical values obtained after the research is: CBR Dcp = 1.083 + (0.347 x CBR Lab) Abstrak: Tanah dasar (sub grade) merupakan lapisan terbawah pada konstruksi jalan raya. Kehandalan disain tebal perkerasan sangat tergantung pada keakuratan nilai daya dukung tanah dasar. Daya dukung tanah dasar yang dikenal dalam nilai California Bearing Ratio (CBR) dapat ditentukan dengan peralatan Dynamic Cone Penetrometer (DCP). Prinsip kerja DCP sangat sederhana dan ekonomis dilakukan di lapangan. Namun, sejak tahun 2013 Kementerian Pekerjaan Umum mengeluarkan Manual Disain Tebal Perkerasan (MDP) 2013 yang menyaratkan penggunaan nilai CBR dari hasil uji laboratorium dengan sampel rendaman 4 hari. Permasalahan yang terjadi adalah waktu dan biaya pengujian sampel. CBR rendaman dengan 4 hari perendaman akan memakan waktu yang lebih lama. Biaya pengambilan sampel, penyiapan sampel dan pengujian sampel juga lebih mahal dibandingkan dengan pengujian dengan alat DCP. Dengan latar belakang tersebut, maka penelitian ini bertujuan untuk mencari hubungan secara empiris antara nilai daya dukung tanah dasar (CBR) dari kedua alat tersebut (DCP dan CBR rendaman). Penelitian ini merupakan studi awal dari Laboratorium Jalan Raya Fakultas Teknik Unsyiah dan diharapkan dapat dikembangkan dengan memperbanyak sampel penelitian dimasa mendatang untuk hasil yang lebih presisi. Nilai empiris yang didapatkan setelah dilakukan Penelitian adalah : CBR Dcp = 1.083 + (0.347 x CBR Lab)
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Awed, Ahmed M., Ahmed N. Awaad, Mosbeh R. Kaloop, Jong Wan Hu, Sherif M. El-Badawy, and Ragaa T. Abd El-Hakim. "Boosting Hot Mix Asphalt Dynamic Modulus Prediction Using Statistical and Machine Learning Regression Modeling Techniques." Sustainability 15, no. 19 (2023): 14464. http://dx.doi.org/10.3390/su151914464.
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The prediction of asphalt mixture dynamic modulus (E*) was investigated based on 1128 E* measurements, using three regression and thirteen machine learning models. Asphalt binder properties and mixture volumetrics were characterized using the same feeding features in the NCHRP 1-37A Witczak model. However, three aggregate gradation characterization approaches were involved in both modelling techniques: the NCHRP 1-37A gradation parameters, Weibull distribution factors, and Bailey method parameters. This study evaluated the performance of these models based on various performance indicators, using both statistical and machine learning regression modeling techniques. K-fold cross-validation and learning curve analysis were conducted to assess the models’ generalization capabilities. The conclusions of this study demonstrate the superiority of the ML models, particularly the Catboost ensemble learning regression (CbR). Hyperparameter optimization and residual analysis were performed to fine-tune and confirm the heteroscedasticity of the CbR model. The Bailey-based CbR model showed the highest coefficient of determination (R2) of 0.998 and the lowest root mean square error (RMSE) of 220 MPa. Moreover, SHAP values interpreted the CbR model and showed the relative importance of its feeding features. Based on the findings of this study, the CbR model is suggested to accurately predict E* for a variety of asphalt mixtures. This information can be used to improve pavement design and construction, leading to more durable and long-lasting pavements.
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Fakhri, Khoirudin, and Agung Hari Wibowo. "Klasifikasi Tanah dan Korelasi Nilai CBR Laboratorium Dengan Nilai CBR Lapangan Dari Uji DCP Tanah Subgrade Pada Proyek Rekonstruksi Ruas Jalan Mirit – Tambakmulyo, Kabupaten Kebumen, Jawa Tengah." Jurnal Teknik Indonesia 5, no. 1 (2024): 61. http://dx.doi.org/10.61689/jti.v5i1.552.
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Nilai California Bearing Ratio (CBR) telah menjadi standar untuk menguji kapasitas dukung tanah, utamanya tanah subgrade dalam konstruksi jalan raya. Angka CBR yang biasanya dinyatakan dalam presentase bisa didapatkan di Laboratorium (CBR Lab) maupun di Lapangan melalui uji Dynamic Cone Penetrometer. Penelitian ini mengkaji pola hubungan CBR Laboratorium dengan CBR Lapangan hasil uji DCP dari 12 sample tanah yang diperoleh di lokasi penelitian yakni Ruas Jalan Mirit – Tambakmulyo (Kabupaten Kebumen, Jawa Tengah). Sample kemudian dianalisis dengan rumus matematis agar memperoleh persamaan regresi dan nilai korelasi untuk menilai hubungan antar keduanya. Sesuai dengan metode AASHTO tanah di lokasi penelitian dikategorikan dalam jenis tanah A-6 yakni tanah berlempung dengan penilaian umum sebagai tanah subgrade sedang hingga buruk. Untuk metode USCS, kategori tanah paling dominan yaitu CL yakni lempung tidak organik dengan plastisitas rendah hingga sedang, lempung berkerikil, lempung berpasir, hingga lempung berlanau. Berdasarkan hasil perhitungan regresi dan korelasi CBR Lapangan terhadap CBR Laboratorium didapat persamaan y = -0,0614x + 7,1492 dengan koefisien korelasi (r) = -0.1862. Pola korelasi yang diperoleh adalah langsung negatif lemah. Angka koefisien determinasi (R2) = 0,035 menunjukkan akurasi model regresi relatif baik. Penelitian ini memperlihatkan jika nilai CBR Lapangan tidak berpengaruh signifikan terhadap CBR Laboratorium pada lokasi penelitian.
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Florez-Puga, Gonzalo, Marco Gómez-Martín, Belén Díaz-Agudo, and Pedro González-Calero. "Dynamic Expansion of Behaviour Trees." Proceedings of the AAAI Conference on Artificial Intelligence and Interactive Digital Entertainment 4, no. 1 (2021): 36–41. http://dx.doi.org/10.1609/aiide.v4i1.18669.
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Artificial intelligence in games is typically used for creating player's opponents. Manual edition of intelligent behaviors for Non-Player Characters (NPCs) of games is a cumbersome task that needs experienced designers. Our research aims to assist designers in this task. Behaviours typically use recurring patterns, so that experience and reuse are crucial aspects for behavior design. The use of hierarchical state machines allows working on different abstraction levels, sharing transitions and reusing pieces from the more detailed levels. However, the static nature of the design process does not release the designer from the burden to completely specify each behaviour. Our approach applies Case-Based Reasoning (CBR) techniques to retrieve and reuse stored behaviors represented as hierarchical state machines (actually, behaviour trees). In this paper we focus on dynamic retrieval of behaviours taking into account the world state and the underlying goals to select the most appropriate state machine to guide the NPC behaviour. The global behaviour of the NPC is dynamically built in run time querying the CBR system. We exemplify our approach through a serious game, developed by our research group, with gameplay elements from First-Person Shooter (FPS) games.
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Ou, Monica H., Geoff A. W. West, Mihai Lazarescu, and Chris Clay. "Dynamic knowledge validation and verification for CBR teledermatology system." Artificial Intelligence in Medicine 39, no. 1 (2007): 79–96. http://dx.doi.org/10.1016/j.artmed.2006.08.004.
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Friska Desi Afrida, Melinia, and Budi Priyanto. "Pengendalian Mutu Tanah Dasar Dan Lapis Pondasi Agregat Pada Pekerjaan Akses Jalan Bandara Internasional Dhoho Kediri." Journal of Comprehensive Science (JCS) 2, no. 5 (2023): 1067–76. http://dx.doi.org/10.59188/jcs.v2i5.321.
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Pada setiap proyek tentu diharapkan kelancaran dan keberhasilan sesuai dengan rencana pekerjaan. Untuk mencapai keberhasilan tersebut dalam suatu proyek diperlukan sebuah pengendalian mutu, pengendalian mutu yang baik akan sangat berpengaruh terhadap kelancaran proyek. Pada penelitian kali ini bertujuan untuk mengetahui pengendalian mutu pada tanah dasar dan lapis pondasi agregat pekerjaan akses jalan Bandara Internasional Dhoho Kediri, data yang digunakan berupa data primer dan data sekunder, untuk data primer diambil dari pengujian langsung di lapangan. Untuk pengendalian mutu akses jalan ini dengan melakukan beberapa pengujian untuk memperoleh nilai CBR. Pengendalian mutu pada tanah dasar yaitu dengan pengujian Dynamic Cone Penetrometer (DCP) dengan ketentuan nilai CBR>6%, sedangkan untuk lapisan pondasi agregat kelas A dan kelas B dengan pengujian CBR Laboratorium dan CBR Lapangan dengan ketentuan LPB nilai CBR>60% dan LPA nilai CBR>90%. Adapun hasil dari pengujian tanah dasar dan lapis pondasi agregat kelas A (LPA) dan lapis pondasi agregat kelas B (LPB). Untuk hasil uji DCP STA 0+700 – 1+000 memiliki rata-rata 19,423%, untuk hasil uji CBR Laboratorium LPB yaitu 66,77% dan CBR Lapangan rata-rata 87,43%. Untuk hasil uji CBR Laboratorium LPA yaitu 94,32% dan CBR lapangan rata-rata 100,5%. Hasil dari pengujian telah melebihi standar yang telah ditentukan maka mutu aman.
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Liu, Qiang, Jia Chen Ma, and Qi Zhang. "CBR Based Collision Avoidance Approach to Reactive Control for Multi-Robot System." Applied Mechanics and Materials 232 (November 2012): 398–402. http://dx.doi.org/10.4028/www.scientific.net/amm.232.398.
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In this paper we discuss a Case-Based Reasoning (CBR) method which is an on-line learning mechanism for dynamic selection and modification of behavior assemblages for collision avoidance of multi-robot system. The CBR module is designed as an additional reactive control system which provide flexible performance in novel environments without extensive high-level reasoning that would slow the system down. The results by robot simulation software MissionLab show that the CBR are effective for making decisions to avoid the collision with static obstacles as well as moving robots in multi-robot system.
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Nasrullah, Nasrullah, Kamaluddin Lubis, and Amsuardiman Amsuardiman. "Analisis Daya Dukung Tanah Lapisan Pondasi Jalan pada Proyek Jalan Tol Tebing Tinggi – Parapat Tahap I (Zona 1)." Jurnal Ilmiah Teknik Sipil dan Arsitektur (JITAS) 3, no. 2 (2024): 86–94. https://doi.org/10.31289/jitas.v3i2.3878.
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In the construction of the Tebing Tinggi-Parapat Toll Road Phase I (Zone 1), the carrying capacity of the soil is very important for the success of construction. The bearing capacity of the soil was tested using DCP and Field CBR tools. The purpose of this study is to obtain soil carrying capacity based on the results of the Dynamic Cone Penetrometer (DCP) test using the DCP tool and the results of the California Bearing Ratio (CBR) test using the CBR tool on the subgrade soil. Meanwhile, the methods used in this study are SNI, AASHTO T 193 and ASTM D 1883 methods. From the results of the calculation of the DCP test, the average CBR score was 6.16%. And the results of the calculation of the field CBR test obtained a maximum average CBR value of 6.43%. Based on the AASHTO T 193 and ASTM D 1883 methods, it meets the requirements. Because the CBR value obtained is more than 6%. With the average CBR value, it meets the requirements. So the soil does not require compaction and the work can be continued to the landfill work (borrowed material).
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Batubara, Iman Hidayat, Darlina Tanjung, and Jupriah Sarifah. "ANALISA KEPADATAN TANAH MENGGUNAKAN DCP PADA PEMBANGUNAN RUAS JALAN SABA DOLOK KECAMATAN KOTA NOPAN KABUPATEN MANDAILING NATAL PROVINSI SUMATERA UTARA." Buletin Utama Teknik 18, no. 1 (2022): 77–84. http://dx.doi.org/10.30743/but.v18i1.5856.
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Untuk rencana jalan, faktor utama yang perlu diperhatikan adalah nilai CBR (California Bearing Ratio) sesuai dengan tanah karena akan mempengaruhi tebal pengerasan perencanaan. Untuk mencari nilai CBR yang didapat sesuai dengan pengujian di lapangan yaitu dengan DCP (Dynamic Cone Penetrometer). Metode pengujian DCP ini dilakukan pada titik kiri, tengah, dan kanan setiap interval 50 meter dengan menggunakan metode zigzag. Dalam merencanakan tebal lapis pengerasan bawah lapis pengerasan atas lapis permukaan tanah, terlebih dahulu harus dilakukan pengujian berat jenis tanah. Penelitian ini bertujuan untuk menganalisis kepadatan tanah di Saba Dolok Kec. Kota Nopan Kab. Mandailing Natal, Provinsi Sumatera Utara, agar akses jalan menjadi mudah untuk dilalui sehingga dapat membantu pengguna jalan untuk mengakses jalan dengan lebih mudah. Dari hasil pengujian nilai DCP, nilai CBR, nilai CBR DDT desain (Daya Dukung Tanah) di Jalan Saba Dolok, Kec. Kota Nopan Kab. Mandailing Natal Provinsi Sumatera Utara menunjukkan nilai DCP homogen sebesar 28,80 mm, sedangkan nilai CBR homogen yang diperoleh sebesar 6,069%, dan nilai CBR desain sebesar 5,93% mm, nilai DDT sebesar 5,07%. Nilai CBR desain/perencanaan yang diperoleh belum memenuhi standar nilai CBR yang telah ditetapkan yaitu antara 5-12%, sehingga perlu dilakukan pemadatan kembali pada tanah dasar karena tidak memenuhi standar nilai CBR yang telah ditetapkan. dipasang dan harus ditempelkan dengan pengerasan jalan.
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Abu-Farsakh, Murad Y., Munir D. Nazzal, Khalid Alshibli, and Ekram Seyman. "Application of Dynamic Cone Penetrometer in Pavement Construction Control." Transportation Research Record: Journal of the Transportation Research Board 1913, no. 1 (2005): 53–61. http://dx.doi.org/10.1177/0361198105191300106.
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A comprehensive testing program was conducted to evaluate the potential use of the dynamic cone penetrometer (DCP) in the quality control–quality assurance procedure during the construction of pavement layers and embankments. The laboratory tests were conducted on different materials prepared inside two test boxes measuring 1.5 m x 0.9 m x 0.9 m (5 ft x 3 ft x 3 ft) located at the Louisiana Transportation Research Center (LTRC). The field tests were performed on different highway sections in Louisiana. In addition, nine test sections were constructed and tested at the pavement research facility site of the LTRC. In all laboratory and field tests, DCP tests were carried out in conjunction with the plate load test (PLT). Also, falling weight deflectometer (FWD) tests were carried out on the field sections. California bearing ratio (CBR) laboratory tests were performed on samples collected from the tested sections. Regression analysis was carried out on the collected data to correlate the DCP penetration rate with the three reference tests used in this study (PLT, FWD, and CBR). Further field tests were conducted to verify the developed regression models. The results showed that the developed models yielded good predictions of the measured FWD moduli and CBR values. This suggests that these models can be used reliably to evaluate the stiffness and strength of pavement materials.
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Uguy, Richard Wempie Vicky, and Yosua Richard Dwiputra Elias. "EVALUASI NILAI CBR LAPANGAN LAPISAN TANAH DASAR DAN CBR LABORATORIUM PADA PEKERJAAN JALAN LINGKUNGAN DENGAN ASPHALT HOTMIX DAN DRAINASE DI AREA GEDUNG OPERASIONAL 1 PAKET KANTOR OTORITAS BANDARA UDARA WILAYAH VII MANADO." Jurnal Ilmiah Realtech 15, no. 2 (2019): 95–100. http://dx.doi.org/10.52159/realtech.v15i2.90.
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Tanah merupakan salah satu komponen yang sangat berpengaruh terhadap ketahanan suatu struktur perkerasan jalan. Tanah yang memiliki kepadatan yang tinggi sangat baik untuk dijadikan dasar suatu struktur.Untuk mengetahui tingkat kepadatan suatu tanah maka perlu dilakukan pengujian CBR (California Bearing Ratio). Pengujian CBR sendiri dibagi menjadi 2 yaitu CBR Lapangan dilaksanakan dengan alat DCP (Dynamic Cone Penetrometer) pada tanah dasar dan CBR Laboratorium. Tujuan dilakukannya penelitian ini adalah untuk mengevaluasi nilai CBR Lapangan lapisan tanah dasar yang diperoleh dengan alat DCP dengan nilai CBRLaboratorium sampel tanah dari Jalan Ringroad I Kota Manado pada Pekerjaan Jalan Lingkungan Dengan Asphalt Hotmix dan Drainase di Area Gedung Operasional 1 paket Kantor Otoritas Bandara Udara Wilayah VIIManado. Penelitian ini dilaksanakan di Laboratorium Uji Material Politeknik Negeri Manado untuk pengujian CBR laboratorium dan pengujian CBR lapangan dilaksanakan oleh Tim Penguji dari Laboratorium Uji Tanah Politeknik Negeri Manado. Hasil nilai CBR Lapangan tanah dasar rata-rata yaitu : 7,49% dan nilai CBR Laboratorium tanah dari Jalan Ringroad I Kota Manado yaitu : 22,50%. Dapat disimpulkan Tanah Dasar di lokasi pekerjaan memiliki kondisi sedang atau tidak buruk. Disarankan jenis tanah dari Jalan Ringroad I Kota Manado direkomendasi sebagai bahan pengganti atau dilakukan pencampuran dengan tanah asli yang memiliki nilai CBR rendah untuk mendapatkan nilai daya dukung yang optimal sehingga berpengaruh pada ketahanan suatu struktur perkerasan jalan. 
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Nuryasin, Dwi, Gerard Aponno, and Moch Sholeh. "PERBANDINGAN ANTARA PENGGUNAAN KAPUR DAN ABU SEKAM PADI UNTUK STABILISASI TANAH DASAR." PROKONS Jurusan Teknik Sipil 12, no. 1 (2019): 50. http://dx.doi.org/10.33795/prokons.v12i1.152.
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The subgrade used for road construction should have a good bearing capacity, because the loads applied on the road construction are static and dynamic loads. If the CBR (California Bearing Ratio) value low so the subgrade of bearing capacity is not good. The purpose is to get the results of physical of the original soil, get the value of CBR laboratory of the original soil, get the CBR laboratory that has been stabilized using lime and rice husk ash, find out the optimum needs of lime and rice husk ash.Four original soil samples each of lime and rice husk had to go through an experiment by using 5%, 8%, 10% and 12% of lime and rice husk ash. The experiment results in water content w = 58.12%, weight of the soil γt= 1.44 grm/cm3, specific gravity Gs=2.11, Liquid Limit LL = 67.28%, Plastic Limit PL=54.06%, Plasticity Index =13.21%, maximum dry matter weight = 1.342 gr/m3 CBR= 5.13% physical properties of original soil; medium plasticity properties; 10% maximum CBR value at 69.046% lime; 10% maximum CBR value at 8.476% rice husk ash. Keywords: lime, rice husk ash, stabilization, CBR
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Gasruddin, Ahmad. "Evaluasi Daya Dukung Tanah Pada Perkerasan Jalan Ruas Jalan Lawela - Labalawa Buton Selatan." Jurnal Media Inovasi Teknik Sipil UNIDAYAN 11, no. 1 (2022): 1–8. http://dx.doi.org/10.55340/jmi.v11i1.780.
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Penelitian ini bertujuan untuk mengetahui berapa besar daya dukung tanah dasar pada lapisan perkerasan dan mengetahui tebal lapisan perkerasan dengan menggunakan Metode Analisa Komponen Bina Marga. Untuk mengetahui nilai CBR atau daya dukung tanah dasar dibutuhkan penggunaan alat Dynamic Cone Penetrometer (DCP). Pengujian Dynamic Cone Penetrometer (DCP) dilakukan secara zig-zag dari STA awal sampai dengan STA akhir dengan jarak pengujian 100 meter per STA. Nilai hasil DCP dihitung berdasarkan total kedalaman penetrasi ujung konus dibagi kumulatif tumbukan. Dari hasil pengujian Dynamic Cone Penetrometer (DCP) pada ruas jalan Lawela - Labalawa diperoleh nilai CBR sebesar 3,11 % dan nilai daya dukung tanah dasar (DDT) sebesar 3,82. Perhitungan tebal lapisan perkerasan dengan Metode Analisa Komponen Bina Marga untuk umur rencana 10 tahun diperoleh tebal lapis permukaan 5 cm menggunakan laston MS 774.
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Permatasari, Sylvina. "HUBUNGAN NILAI CBR LABORATORIUM DAN DCP PADA TANAH YANG DIPADATKAN PADA RUAS JALAN DESA SEMISIR KABUPATEN KOTABARU." TAPAK (Teknologi Aplikasi Konstruksi) : Jurnal Program Studi Teknik Sipil 10, no. 2 (2021): 133. http://dx.doi.org/10.24127/tp.v10i2.1582.
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Cara uji Dynamic Cone Penetrometer (DCP) merupakan suatu prosedur yang cepat untuk melaksanakan evaluasi kekuatan tanah dasar dan lapis pondasi jalan dengan biaya yang relatif kecil. Perencanaan tebal lapisan perkerasan bawah dan lapisan perkerasan atas serta lapis permukaan terlebih dahulu harus di uji kepadatan tanahnya. Pada penelitian ini membahas hubungan nilai CBR laboratorium dan DCP pada tanah yang dipadatkan di ruas Jalan Desa Semisir Kabupaten Kotabaru yang merupakan jalan yang akan digunakan perusahaan agar akses jalan pelabuhan menjadi mudah dilalui sehingga dapat membantu perusahaan melalui akses jalan tersebut.Perhitungan hasil analisa data baik di lapangan maupun di laboratorium, diperoleh titik penelitian yang memiliki nilai hampir sama sehingga penggunaan alat DCP untuk penentuan CBR tanah (CBR perkiraan awal) di lapangan di Ruas Jalan Desa Semisir Kabupaten Kotabaru dapat dipakai sebagai suatu data perencanaan konstruksi jalan tanpa harus melakukan pengujian CBR lebih lanjut di laboratorium. Untuk mendapatkan berapa nilai DCP, nilai CBR, CBR desain dan nilai daya dukung tanah pada ruas Jalan dimana hasil pengujian menunjukkan rata-rata nilai DCP adalah 18,13 mm, sedangkan rata-rata nilai CBR adalah 13,35% dan desain nilai CBR adalah 24,78% dengan Daya Dukung Tanah adalah 7,74%.Kondisi di lapangan saat pengujian sudah layak untuk ditingkatkan perkerasan lapisan permukaan aspal karena memiliki standar kepadatan minimum 6%. Hasil nilai CBR tersebut akan menjadi rekomendasi untuk penentuan tebal lapis perkerasan dan tebal lapis permukaan pada Jalan tersebut
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Daga, Welem, Melchior Bria, Anastasia Muda, and Ludofikus Dumin. "EVALUASI DAYA DUKUNG TANAH DASAR UNTUK MENDUKUNG PENANGANAN KERUSAKAN RUAS JALAN WEELULI - FULUR KABUPATEN BELU – NTT." JUTEKS - Jurnal Teknik Sipil 1, no. 1 (2017): 1. http://dx.doi.org/10.32511/juteks.v1i1.76.
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Salah satu penyebab kegagalan struktur perkerasan jalan (pavement) dalam melayani arus lalulintas adalah daya dukung tanah (DDT) yang relatif rendah. Hal ini dapat diantisipasi sebelumnya melalui suatu penelitian tanah dasar pada ruas jalan baru maupun peningkatan jalan. Parameter yang paling umum dipakai dalam menilai daya dukung tanah untuk perkerasan jalan adalah nilai California Bearing Ratio (CBR) yang dapat diperoleh baik melalui uji CBR laboratorium atau uji Dynamic Cone Penetrometer (DCP) langsung di lapangan. Dalam penelitian ini akan dievaluasi bagaimana aplikasi dari kedua metode ini untuk menilai daya dukung tanah dasar dengan mengambil kasus di Ruas Jalan Weeluli – Fulur Kabupaten Belu NTT. Ruas jalan ini mengalami kerusakan yang cukup parah karena beban kendaraan yang melalui jalur ini melebihi kapasitas tonase jalan. Hasil dari penelitian ini adalah diperolehnya nilai DDT berdasarkan hasil uji lapangan menggunakan DCP dan hasil uji CBR laboratorium dan nantinya dipakai dalam merencanakan pekerjaan peningkatan ruas jalan Weeluli – Fulur. Hasil perbandingan nilai CBR diperoleh hubungan antara CBR lapangan (y) dengan CBR Laboratorium (x) adalah Linear menurut persamaan y = 1,249x – 0,557.
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Wibowo, Agung Hari, and Khoirudin Fakhri. "Soil Classification and Correlation of Laboratory CBR Values with CBR Value from Subgrade DCP Test on Reconstruction Project of Mirit – Tambakmulyo Road Section, Kebumen, Central Java." Jurnal Teknik Sipil dan Perencanaan 26, no. 2 (2024): 10–18. https://doi.org/10.15294/jtsp.v26i2.2590.
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The California Bearing Ratio (CBR) value has become the standard for determining the bearing capacity of soil,especially subgrade, in highway construction. Usually expressed as a percentage, the CBR figure can be obtained in the laboratory (CBR Lab) or the field through the Dynamic Cone Penetrometer (DCP) test. This study examines the relationship between the Laboratory CBR and the Field CBR from the results of the DCP test on 12 soil samples obtained at the research location on the Mirit - Tambakmulyo Road Section (Kebumen Regency, Central Java). The samples were then analyzed using a mathematical formula to obtain a regression equation and correlation value. Based on the AASHTO method, the soil at the research location is classified as A-6 soil type, namely clay soil, with a general assessment of moderate to poor subgrade. For the USCS method, the most dominant soil classification is CL: non-organic clay with low to moderate plasticity, gravelly clay, sandy clay, and dusty clay. The Laboratory CBR value was obtained from 5.59% to 7.90%. Two samples have a CBR Value <6.00%, namely Sample 10 and Sample 11. Meanwhile, for the CBR value from the DCP test in the field, the CBR range is 5.11% to 12.96%. There is only one sample with a CBR Value <6.00%, namely sample 5, which has a CBR figure of 5.11%. The CBR value of 6.00% is the minimum subgrade requirement in the Manual Desain Perkerasan 2024 released by the Indonesian Directorate General of Highways. From the results of the regression calculation and correlation of Field CBR to Laboratory CBR, the equation y = -0.0614x + 7.1492 is obtained with a correlation coefficient (r) = -0.1862. The correlation pattern obtained is a weak negative direct correlation. The coefficient of determination (R2) = 0.035 indicates that the accuracy of the regression model is quite good. This study proves that the correlation between Field CBR value and Laboratory CBR is weak and not statistically significant.
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Henzinger, Christoph, and Stefan Vogt. "Evaluation of the Dynamic CBR Test on Coarse-Grained Materials." Geotechnical Testing Journal 43, no. 2 (2019): 20180269. http://dx.doi.org/10.1520/gtj20180269.
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Nurhidayatullah Am, Shalaho Dina Devy, Lucia Litha Respati, Ardhan Ismail, and Tommy Trides. "Analisis Nilai California Bearing Ratio (CBR) Terhadap Tebal Lapisan Jalan Tambang pada Pit Selatan PT. Bina Sarana Sukses Site PT. Baramulti Suksessarana." Venus: Jurnal Publikasi Rumpun Ilmu Teknik 3, no. 3 (2025): 154–68. https://doi.org/10.61132/venus.v3i3.933.
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Mining roads play an important role in supporting the smooth running of mining activities, especially in the process of transporting materials. The bearing capacity of the soil as a road subgrade greatly affects the stability and resistance of the road to heavy equipment loads. This study aims to analyze the effect of the plasticity index and compaction parameters on the California Bearing Ratio (CBR) value, as well as to determine the thickness of the road layer based on the laboratory CBR value. Testing was carried out at the South Pit of PT. Bina Sarana Sukses site PT. Baramulti Suksessarana with a field test method using the Dynamic Cone Penetrometer (DCP) and laboratory tests such as proctor tests, Atterberg limit tests, and CBR tests on various variations of clay and sand soil mixtures. The results showed that increasing the plasticity index decreased the CBR value, while increasing the maximum dry density and decreasing the optimum water content increased the CBR value. Based on the laboratory CBR value, recommendations were obtained for the appropriate road layer thickness to ensure optimal bearing capacity for heavy equipment passing through the research area.
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Zhao, Yu-Jie, Xin-xing Luo, and Li Deng. "A CBR-Based and MAHP-Based Customer Value Prediction Model for New Product Development." Scientific World Journal 2014 (2014): 1–18. http://dx.doi.org/10.1155/2014/459765.
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In the fierce market environment, the enterprise which wants to meet customer needs and boost its market profit and share must focus on the new product development. To overcome the limitations of previous research, Chan et al. proposed a dynamic decision support system to predict the customer lifetime value (CLV) for new product development. However, to better meet the customer needs, there are still some deficiencies in their model, so this study proposes a CBR-based and MAHP-based customer value prediction model for a new product (C&M-CVPM). CBR (case based reasoning) can reduce experts’ workload and evaluation time, while MAHP (multiplicative analytic hierarchy process) can use actual but average influencing factor’s effectiveness in stimulation, and at same time C&M-CVPM uses dynamic customers’ transition probability which is more close to reality. This study not only introduces the realization of CBR and MAHP, but also elaborates C&M-CVPM’s three main modules. The application of the proposed model is illustrated and confirmed to be sensible and convincing through a stimulation experiment.
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Jordão, Hugo P., Adriano E. F. L. Lucena, Milton B. C. Filho, John K. G. Rodrigues, and Dennyele A. Gama. "Contribution to the Design of Urban Pavement of Low Volume Traffic Using the Dynamic Cone Penetrometer." Soils and Rocks 35, no. 2 (2012): 181–88. http://dx.doi.org/10.28927/sr.352181.
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The characteristics of the subgrade soil, obtained from laboratory and in situ tests, are of fundamental importance to the design of pavements. The tests carried out in the field, such as CBR in situ, Bredboard and others, represent more significantly the conditions of the soil. The Dynamic Cone Penetrometer (DCP) is an equipment of easy use that has become an alternative to the pavement design. With that kind of equipment it is possible to determine the resistance profile to the penetration of the layers of the compacted soil or in its natural state from the correlations between this test and the CBR in situ. This work attemps to adequate a design method for urban pavements of low volume traffic, using the results of the penetration index obtained with the DCP. The results indicate that the DCP presents a high correlation with CBR in situ tests for A-2-4 soils, which can be used in pavement design of urban roads of low volume traffic.
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Rincón-Morantes, Jhon Fredy, Allex E. Alvarez, and Oscar J. Reyes-Ortiz. "Estimación de la rigidez de materiales granulares marginales no ligados mediante ensayo CBR dinámico." Ingeniería y Desarrollo 40, no. 01 (2022): 92–113. http://dx.doi.org/10.14482/inde.40.01.621.992.
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La evaluación en laboratorio de la respuesta de materiales granulares no ligados (e.g., subbases- y bases-granulares para pavimentación) bajo carga dinámica es limitada en Colombia. Este estado de la práctica se relaciona, entre otros aspectos, con que el equipo triaxial dinámico requerido para su determinación es costoso y los protocolos de ensayo complejos. Como alternativa, en la última década se han realizado desarrollos sobre el ensayo CBR dinámico (dCBR), que emplea el equipo, pero modifica el protocolo del ensayo de CBR convencional. Esta investigación propone las bases de un nuevo protocolo para el ensayo de dCBR, para determinar la rigidez de materiales granulares (i.e., módulo resiliente equivalente) mediante la aplicación de siete etapas de carga repetida, donde cada etapa está definida por una deformación objetivo. El estudio incluyó dos materiales granulares marginales (MGMs), con índices de plasticidad altos (IP>6). Los resultados sugieren que el protocolo propuesto para el ensayo de dCBR permite la estimación del módulo resiliente equivalente. Adicionalmente, este protocolo discrimina el efecto de la plasticidad de la fracción fina del MGM sobre su rigidez (i.e., reducción de módulo resiliente equivalente al incrementar el índice de plasticidad). Con base en los resultados obtenidos, se propone avanzar en la caracterización de un mayor número de materiales para validar los resultados preliminares presentados e indagar sobre una posible correlación entre valores de módulo resiliente y módulo resiliente equivalente.
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Nursar, Achmad Satria, Iswan Iswan, and Setyanto Setyanto. "Komparasi Nilai Daya Dukung Tanah Lempung Ditinjau dari Hasil Uji Skala Penetrasi Konus Dinamis, Uji CBR Laboratorium dan Uji Kuat Tekan Bebas." Jurnal Rekayasa Sipil dan Desain 3, no. 2 (2016): 193–204. https://doi.org/10.23960/jrsdd.v3i2.451.
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Soil bearing capacity can be determined with several kind of test, that could produce different testresult for same sample in accordance to characteristics of test equipment and main targets of eachtest equipment in determining soil parameters. This research aimed to compare characteristics ofsoil bearing capacity that obtained from DCP (Dynamic Cone Penetrometer) test, LaboratoryCBR test, and UCS (Unconfined Compressive Strength) test.The soil sample which tested on this research was from Margakaya village and Palputih village,District of Jati Agung, South Lampung and Blimbing Sari village, District of Jabung, EastLampung. Soil sample for Laboratory CBR test was made by compaction. Meanwhile, soilsamples for UCS test was undisturbed soil and remoulded sample.The result of research showed that the CBR value of DCP test result was greater than theLaboratory CBR test result with margin less than 1%. The CBR value was directly proportional tothe compressive strength of its soil. Meanwhile, the DCPI value of DCP test result was inverselyproportional to the design CBR value and the compressive strength of its soil.Keywords: California Bearing Ratio, DCPI, clay, compressive strength
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Fardyansah, Yudha, and Nurly Gofar. "Pengaruh Penambahan Pasir Terhadap Daya Dukung Subgrade Jalan." Cantilever: Jurnal Penelitian dan Kajian Bidang Teknik Sipil 9, no. 2 (2020): 63–68. http://dx.doi.org/10.35139/cantilever.v9i2.42.
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The performance of flexible pavement is highly influenced by the quality of subgrade material. In Palembang, the foundation soil is usually consisted of clay which is sensitive to change in water content caused by rainfall as well as inundation. This paper presents results of laboratory study on the effect of adding sand to clay to be used as subgrade material for urban roads. California Bearing Ratio (CBR) values were used as indication of strength improvement of the subgrade in unsoaked and soaked conditions. The suitability of the stabilized soil for use as subgrade of pavement construction in response to normal and inundated conditions was further assessed through field verification using Dynamic Cone Penetrometer. Results of both laboratory and field studies indicated that addition of 21% sand by dry weight give the most improvement in terms of CBR value. In this case, the CBR unsoaked increased from 8% to 18% while the CBR soaked increased from less than 3% to 8%. Field verification showed that the CBR of compacted natural soil decreased from 8% to 2% after rainfall while the CBR of the sand stabilized soil decreased from 17% to 8%. Thus the sand stabilized clay is expected to perform adequately even after subjected to rainfall and inundation.
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Sulistiawati, Baiq Heny, Garup Lambang Goro, Junaidi Junaidi, Danang Isnubroto, and Imam Nurhadi. "ANALISIS KORELASI NILAI CALIFORNIA BEARING RATIO (CBR) DAN NILAI KUAT GESER PADA TANAH LUNAK." Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil 29, no. 1 (2024): 264–72. https://doi.org/10.32497/wahanats.v29i1.5664.
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The CBR value is influenced by soil gradation, mineral type, density and soil shear parameters. CBR testing is carried out on subgrade soil, but the undrained shear strength of the soil can also be used as a soil design parameter. Field shear strength tests that can be used to determine soil shear strength are DCP and Vane Shear. In contrast to DCP testing, shear strength testing is relatively quick and easy to determine soil properties to determine design parameters. Therefore, testing is needed to determine the correlation between the soil shear strength value and the CBR value to obtain a new equation that can be applied in the field. In this research, the CBR value was obtained through the Dynamic Cone Penetrometer test (DCP) and the soil shear strength of the vane shear test. DCP and Vane Shear testing was carried out at 10 test points in the Semarang area, Central Java. Laboratory testing is also carried out to validate soil types. The correlation obtained between the CBR value and the soil shear strength reached R = 0.8312. Based on this test, it can be concluded that the CBR value and soil shear strength value increase as the depth of the soil tested increases.