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Journal articles on the topic 'Light Weight Deflectometer (LWD)'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Diana, Iffah Lubna, Indra Nurtjahjaningtyas, and Akhmad Hasanuddin. "Relationship between Highway Damage Assessment Method and Light Weight Deflectometer (LWD)." MEDIA KOMUNIKASI TEKNIK SIPIL 30, no. 1 (2024): 105–14. http://dx.doi.org/10.14710/mkts.v30i1.56617.

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The Tegal Siwalan-Banyuanyar Highway in Probolinggo Regency has been damaged at several points and has not received any maintenance for the last 7 years. This has a huge impact on road users because it can interfere with driving comfort and safety, so it is necessary to analyze the road damage that has occurred, including the type of damage and an assessment of road conditions. The Bina Marga method and a light-weight deflectometer (LWD) can be used to assess road deflection in order to assess road condition. The results of this study obtained priority order values for each segment that were i

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Azzidul Piktor, Riqqi, Asep Taufik Hudaya, and Siegfried Syafier. "KONSISTENSI LWD (LIGHT WEIGHT DEFLECTOMETER) PUSJATAN UNTUK JALAN KERIKIL." Cerdika: Jurnal Ilmiah Indonesia 3, no. 12 (2023): 1172–80. http://dx.doi.org/10.59141/cerdika.v3i12.720.

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Infrastruktur jalan merupakan tulang punggung dalam sistem transportasi suatu negara. Perkerasan jalan sangat penting dalam mendukung infrastruktur transportasi yang efisien dan berkelanjutan. Salah satu jenis perkerasan jalan yang sering digunakan adalah perkerasan jalan berkerikil. Perkerasan jalan berkerikil sering digunakan di wilayah pedesaan atau daerah dengan lalu lintas ringan hingga sedang. LWD (Light Weight Deflectometer) merupakan salah satu alat yang digunakan untuk mengukur kekuatan struktural dari suatu sistem perkerasan jalan terutama untuk jalan-jalan yang tanpa penutup. LWD Pu

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3

Caroles, L., A. R. Djamaluddin, A. A. Amiruddin, and A. Arsyad. "Correlation of modulus elasticity of Falling Weight Deflectometer (FWD) towards Light Weight Deflectometer (LWD) laboratory." IOP Conference Series: Earth and Environmental Science 419 (February 8, 2020): 012039. http://dx.doi.org/10.1088/1755-1315/419/1/012039.

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4

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 DC

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Mousavi, S. Hamed, Mohammed A. Gabr, and Roy H. Borden. "Subgrade resilient modulus prediction using light-weight deflectometer data." Canadian Geotechnical Journal 54, no. 3 (2017): 304–12. http://dx.doi.org/10.1139/cgj-2016-0062.

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Resilient modulus has been used for decades as an important parameter in pavement structure design. Resilient modulus, like other elasticity moduli, increases with increasing confining stress and decreases with increasing deviatoric stress. Several constitutive models have been proposed in the literature to calculate resilient modulus as a function of stress state. The most recent model, recommended by the Mechanistic–empirical pavement design guide (MEPDG) and used in this paper, calculates resilient modulus as a function of bulk stress, octahedral shear stress, and three fitting coefficients

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6

Sreejith, V. U., Ajitha T. Dr., and Haneef O. Nadheera. "Modulus based Approach of Lateritic Subgrade Soil Strength Evaluation Using Light Weight Deflectometer." Journal of Advances in Geotechnical Engineering 5, no. 2 (2022): 1–11. https://doi.org/10.5281/zenodo.7192728.

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Since density based approach of pavement evaluation have its own limitations, quality control procedures of compacted pavement layers across the globe is slowly shifting from density based to stiffness/strength based criteria. The stiffness based measurements are easy to measure and more reliable than the density based quality measurements. The light weight deflectometer (LWD), one of many cutting-edge methods for determining how stiff compacted layers are, is employed in this study as a quality control tool to evaluate the standard of compacted pavement layers. LWD was created to assess the s

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Larsson, Martin, Anna Niska, and Sigurdur Erlingsson. "Structural Stability of Cycle Paths—Introducing Cycle Path Deflection Bowl Parameters from FWD Measurements." Infrastructures 10, no. 1 (2024): 7. https://doi.org/10.3390/infrastructures10010007.

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A recurrent challenge on cycle paths are edge cracks, which affect the traffic safety and accessibility of cyclists and produce high maintenance costs. Being both structurally thinner and narrower structures than roads, the cycle paths are extra prone to this problem. A few passages of heavy vehicles in unfavourable conditions might be enough to break the edge. The load-bearing capacity of eight municipal cycle paths in Linköping, Sweden, were assessed by falling weight deflectometer (FWD) and light falling weight deflectometer (LWD) measurements during a year-long cycle. A set of alternative

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Kuttah, Dina. "Measurement of subgrade soil permanent deformations under repeated loadings during simple in-situ test." E3S Web of Conferences 544 (2024): 02006. http://dx.doi.org/10.1051/e3sconf/202454402006.

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is well known that permanent deformation has a significant influence on the performance of pavements because it leads an increase in maintenance operations and costs and reduces ride quality. Therefore, it is important to predict the permanent deformations during the design stage. Due to the fact that up to date there is no simple test equipment and procedure that enables a direct in-situ measurement permanent deformations of subgrade soil under repeated loading, the current research has been undertaken to evaluating new testing approach to fulfil this requirement. The current study deals with

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9

Kuttah, Dina. "Using Repeated Light-Weight Deflectometer Test Data to Predict Flexible Pavement Responses Based on the Mechanistic–Empirical Design Method." Construction Materials 4, no. 1 (2024): 216–37. http://dx.doi.org/10.3390/constrmater4010012.

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This study investigated the potential of lightweight deflectometer (LWD) data in predicting layer moduli and response measurements within the Mechanistic–Empirical Pavement Design Guide. To achieve this goal, field repeated LWD tests and laboratory repeated load triaxial tests were carried out on granular base material compacted at 3% and 6% water content, sandy subgrade soil compacted at 3%, 4% and 9% water content and silty sand subgrade soil compacted at 8% and 10% water content. The results revealed that substituting traditional repeated load triaxial (RLT) data with LWD data for predictin

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Permana, Nesta, and Siegfried Syafier. "KONSISTENSI LIGHT WEIGHT DEFLECTOMETER PUSAT PENELITIAN JALAN DAN JEMBATAN (PUSJATAN) PADA JALAN TANAH." Jurnal Teknik Sipil 14, no. 2 (2024): 179–89. https://doi.org/10.36546/tekniksipil.v14i2.1471.

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Infrastruktur jalan yang kuat memainkan peran penting dalam mendukung mobilitas masyarakat, pertumbuhan ekonomi, dan pengembangan wilayah. Perkerasan jalan tanah merupakan jenis perkerasan yang paling sering digunakan di daerah pedesaan atau wilayah dengan lalu lintas ringan hingga sedang. Keunggulannya meliputi biaya yang lebih rendah dibandingkan dengan perkerasan aspal serta kemudahan konstruksinya. Namun, tantangan utama perkerasan tanah terletak pada memastikan konsistensi dan stabilitas yang memadai, karena keberhasilan perkerasan bergantung pada pemadatan yang tepat. Pemadatan lapisan j

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Choi, Yongjin, Donghyun Ahn, Yunje Lee, and Jaehun Ahn. "Compaction Quality Monitoring of Open-Graded Aggregates by Light Weight Deflectometer and Soil Stiffness Gauge." Sustainability 12, no. 6 (2020): 2521. http://dx.doi.org/10.3390/su12062521.

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Open-graded aggregates (OGAs) are free-draining materials often used as the base layer of permeable pavements to allow the infiltration or drainage of stormwater. Despite their widespread use, the compaction quality of OGA base layers has not been specified properly. The currently used density-based compaction quality control (QC) has limitations; obtaining the field density and maximum dry density of OGAs by typical methods is challenging, due to their unique properties. To overcome these limitations, modulus-based compaction QC can be used as an alternative. In this study, five different OGA

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Permana, Nesta, and Siegfried Syafier. "Konsistensi Light Weight Deflectometer Pusat Penelitian Jalan dan Jembatan (Pusjatan) Pada Jalan Tanah." JUTEKS : Jurnal Teknik Sipil 9, no. 2 (2024): 142. https://doi.org/10.32511/juteks.v9i2.1304.

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Strong road infrastructure plays an important role in supporting community mobility, economic growth and regional development. Dirt road pavement is the type of pavement most often used in rural areas or areas with light to moderate traffic. Its advantages include lower costs compared to asphalt pavement as well as ease of construction. However, the main challenge of soil pavements lies in ensuring adequate consistency and stability, as the success of the pavement depends on proper compaction. Compaction of the subgrade road layer is a critical aspect that, if failed, can cause deformation and

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Bahy, Fransiskus Roystone, Kasius Kaok Kaok, Siegfried Syafier, and Raisa Fadhila. "Consistency Testing of Light Weight Deflectometer (LWD) Tool Pusjatan on Composite Road (Case Study of Road Section Soreang New Ring Road, Bandung Regency)." CIVED 11, no. 3 (2024): 953–63. http://dx.doi.org/10.24036/cived.v11i3.663.

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In an era of rapid technological and infrastructural development, the quality of roads is critical to ensuring efficient and safe mobility. Composite roads, which consist of a mixture of different types of construction materials, have become an attractive option in road development in various regions. However, to ensure the success of composite roads, structural consistency and performance must be considered. A Light Weight Deflectometer (LWD) is a device used to measure the instability of road layers by applying surface pressure and measuring the resulting deflection. Although the use of LWD

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Wijaya, Aldi Latna, Arif Chandra Abdullah, Siegfried Syafier, and Robby Gunawan Yahya. "Calculation Thickness of the Added Flexural Layer on Composite Layer using a Light Weight Deflectometer (LWD) Pusjatan." CIVED 11, no. 3 (2024): 895–904. http://dx.doi.org/10.24036/cived.v11i3.627.

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Calculating the thickness of the flexible overlay needs to consider several factors, such as traffic load, soil characteristics, existing pavement conditions, and planned changes to the road design. This procedure generally uses recognized pavement design methods, such as the AASHTO 1993 method (Guide for Design of Pavement Structures). This research aims to determine the thickness of the added layer using an asphalt layer on composite roads in accordance with the 1993 AASHTO standards. It is hoped that this method can produce an effective overlay design, extend the life of the pavement, and i

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Akmaz, Emre, Saad Ullah, Burak F. Tanyu, and Erol F. Guler. "Construction Quality Control of Unbound Base Course using Light Weight Deflectometer where Reclaimed Asphalt Pavement Aggregate is Used as an Example." Transportation Research Record: Journal of the Transportation Research Board 2674, no. 10 (2020): 989–1002. http://dx.doi.org/10.1177/0361198120934473.

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Reclaimed asphalt pavement (RAP) is already being recycled as a construction and building material. One of the commonly considered applications is to create an unbound aggregate from this material. However, since the particles of RAP have binder coatings, traditional quality control procedures applied during construction such as use of a nuclear density gauge does not provide accurate results. Therefore there is a need to find another method that can be applied during construction to confirm that the placement in the field meets the design criteria. For this reason, in this study, the suitabil

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16

Sudarsono, I., L. Aisyah, and R. N. P. Prakoso. "Correlation of modulus elasticity between Light Weight Deflectometer (LWD) and Dynamic Cone Penetrometer (DCP) for subgrade of pavement." Journal of Physics: Conference Series 1517 (April 2020): 012030. http://dx.doi.org/10.1088/1742-6596/1517/1/012030.

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17

Lee, Yunje, Yongjin Choi, Donghyun Ahn, and Jaehun Ahn. "Prediction Models Based on Regression and Artificial Neural Network for Moduli of Layers Constituted by Open-Graded Aggregates." Materials 14, no. 5 (2021): 1199. http://dx.doi.org/10.3390/ma14051199.

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The impermeable cover in urban area has been growing due to rapid urbanization, which prevents stormwater from being naturally infiltrated into the ground. There is a higher chance of flooding in urban area covered with conventional concretes and asphalts. The permeable pavement is one of Low-Impact Development (LID) technologies that can reduce surface runoff and water pollution by allowing stormwater into pavement systems. Unlike traditional pavements, permeable pavement bases employ open-graded aggregates (OGAs) with highly uniform particle sizes. There is very little information on the eng

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Albuquerque Filho, Luiz Heleno, Luís Fernando Martins Ribeiro, and Michéle Dal Toé Casagrande. "PROPOSTA DE AVALIAÇÃO DAS CONDIÇÕES ESTRUTURAIS E FUNCIONAIS DE TRECHOS EXPERIMENTAIS DE UMA ESTRADA NÃO REVESTIDA CONSTRUÍDA COM DIFERENTES TÉCNICAS DE MELHORAMENTO DE SOLOS." Revista ENINFRA 1, no. 1 (2022): 171–86. https://doi.org/10.70859/2764-9539.v1.n1.21.

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A matriz de transportes de cargas do Brasil apresenta grande desequilíbrio em função da acentuada concentração do modal rodoviário em relação aos demais modais. Graves distorções também são observadas na distribuição do revestimento da malha rodoviária, com apenas 13,6% de sua extensão contando com revestimento considerado definitivo. Em função de fatores físicos, geométricos e climáticos, diferentes métodos de dimensionamento de estradas não revestidas foram desenvolvidos em todo o mundo. Apesar dos avanços, esses métodos foram majoritariamente concebidos para estradas tratadas com cascalho e

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Krawczyk, Bartłomiej, and Piotr Mackiewicz. "Wpływ obciążeń cyklicznych w badaniu lekką płytą dynamiczną na identyfikowane parametry podłoża." Roads and Bridges - Drogi i Mosty 14, no. 1 (2015): 5–17. http://dx.doi.org/10.7409/rabdim.015.001.

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The most popular methods used for evaluation of subgrade bearing capacity with light weight deflectometer (LWD) assume linear-elastic behaviour of material. In these methods the input data used for identification of subgrade parameters are limited to initial loading cycles. Change of material parameters occurring under repetitive loading is not taken into consideration. Due to the characteristics of road building materials, including in particular granular materials, omitting the compaction resulting from repetitive loading is considered a rough approximation. Actually the subgrade parameters

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Rosyidi, Sri Atmaja P., Niken Wukirasih, and Siegfried Siegfried. "Menentukan Modulus Elastisitas Stabilisasi Subgrade Berbasis Defleksi." Jurnal Rekayasa Sipil (JRS-Unand) 18, no. 1 (2022): 1. http://dx.doi.org/10.25077/jrs.18.1.1-16.2022.

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Metode evaluasi perkerasan jalan berbasis teknologi tidak merusak atau non-destructive testing (NDT) merupakan pendekatan pengujian yang diperlukan saat ini dalam menjalankan sistem manajemen perkerasan jalan. Pengujian NDT memiliki keunggulan dari pengujian konvensional berbasis laboratorium maupun pengujian lapangan yaitu lebih cepat, ekonomis dan meminimalisasi gangguan pelaksanaan pengujian di lapangan serta tidak meninggalkan kerusakan pada struktur yang dievaluasi. Makalah ini bertujuan untuk mengukur modulus elastisitas bahan subgrade atau tanah dasar yang distabilisasi dengan menggunak

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Caroles, Lucky. "Asphalt Elasticity Modulus Comparison Using Modified Laboratory LWD Against UMMATA Method." Civil Engineering Journal 8, no. 6 (2022): 1257–67. http://dx.doi.org/10.28991/cej-2022-08-06-012.

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Highway consultants need pavement structure strength to examine and design. With advances in computer, sensor, and microelectronic technologies, the light weight deflectometer (LWD) can measure granular and asphalt layers. This portable, easy-to-use tool is suggested. This article was designed to improve LWD Pusjatan's accuracy and distinguish it from other testing methods. This study compares the LWD Pusjatan and UMMATA (Universal Material Testing Apparatus) methods for measuring modulus of elasticity on different materials. Boussinesq elastic theory is used to compute the modulus of most LWD

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Krawczyk, Bartłomiej, and Piotr Mackiewicz. "Impact of reinforcement layer material and thickness on deflections measured in the static and dynamic plate load tests." Roads and Bridges - Drogi i Mosty 15, no. 2 (2016): 87–102. http://dx.doi.org/10.7409/rabdim.016.006.

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The bearing capacity and compaction values obtained in the plate load tests (the latter determined indirectly) often depend on the used test method: static - using static load test apparatus (VSS) or dynamic - using light weight deflectometer (LWD). Despite extensive comparative studies the correlation between two test methods still remains an issue. With the values obtained in the field tests and with the use of numerical calculations allowing for the impact of viscoplastic phenomena, the authors managed to demonstrate how big is the effect of not only the type of material, but also of the th

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Choi, Chan Yong, Jin Wook Lee, Yuijn Lim, and Hojin Cho. "Correction Factors for Modulus Calculation Equation used in Light Weight Deflectometer Considering Track Foundation." Journal of the Korean society for railway 18, no. 1 (2015): 53–62. http://dx.doi.org/10.7782/jksr.2015.18.1.53.

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Albuquerque Filho, Luiz Heleno, Michéle Dal Toé Casagrande, and Lu Fernandoís Martins Ribeiro. "Proposed structural and functional evaluation of unpaved roads improved with geosynthetics, reclaimed asphalt pavement and Portland cement." E3S Web of Conferences 544 (2024): 11003. http://dx.doi.org/10.1051/e3sconf/202454411003.

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The cargo transport network in Brazil is highly unbalanced, with a marked concentration of road transport in relation to other modes of transport. As if the flagrant imbalance between modes were not enough, serious distortions are also observed in the distribution of road network coverage. Only 13% of the Brazilian network has coating considered definitive, reinforcing the importance of unpaved roads in the transport network. Despite advances, the design methods for unpaved roads were mostly developed for roads treated with gravel in regions with a temperate climate, which are inconsistent wit

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Borges, Jesce John da Silva, Moacy Silva Torres, Klayde Janny da Silva Veríssimo, Marta Lúcia de Almeida Almendra Freitas, and Silvio Romero de Melo Ferreira. "Estudo do efeito da inundação na variação de volume, na resistência de ponta e no módulo de elasticidade de um solo colapsível do Semiárido de Pernambuco." Matéria (Rio de Janeiro) 21, no. 4 (2016): 996–1011. http://dx.doi.org/10.1590/s1517-707620160004.0092.

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RESUMO Solos colapsíveis apresentam comportamento hidromecânico diferenciado quando inundados. O artigo analisa a variação de volume, da resistência de ponta e do módulo de elasticidade de um solo colapsível de Petrolina-PE devido à inundação. O programa de investigação geotécnica desenvolvido em campo abrangeu: sondagens de simples reconhecimento; coleta de amostras indeformadas e deformadas; ensaios com penetrômetros estático e dinâmico DPL (Dynamic Petermeter Light); ensaios com o Light Weight Deflectometer - LWD e ensaios de colapsibilidade com o Expansocolapsômetro no solo natural e inund

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Sulewska, Maria J., and Grzegorz Bartnik. "Application of the Light Falling Weight Deflectometer (LFWD) to Test Aggregate Layers on Geosynthetic Base." Procedia Engineering 189 (2017): 221–26. http://dx.doi.org/10.1016/j.proeng.2017.05.035.

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Oh, Han Jin, Jin Wook Lee, Kideok Kim, Dae Yeol Kwak, Sang Yum Lee, and Gyeong Hoon Ma. "Evaluation of Structure Pavement Conditions in Seoul Using Light Falling Weight Deflectometer (LFWD) and Road Scanner." International Journal of Highway Engineering 24, no. 1 (2022): 1–8. http://dx.doi.org/10.7855/ijhe.2022.24.1.001.

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Arjun Siva Rathan, R. T., and V. Sunitha. "Development of Deflection Prediction Model for Interlocking Concrete Block Pavements." Transportation Research Record: Journal of the Transportation Research Board 2676, no. 3 (2021): 292–314. http://dx.doi.org/10.1177/03611981211051339.

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Interlocking concrete block pavement (ICBP) is one of the pavement types adopted worldwide, as it is economical and exhibits improved structural performance. The primary objective of the present study was to develop a deflection prediction model for ICBP considering the most influential parameters using the plate load test. The finite element method (FEM) based software PLAXIS was also employed to predict the plate load deflection to reduce laboratory cost and time. Statistical analysis was carried out to assure the identical deflection values between the laboratory plate load test and FEM ana

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Lim, Yujin, Hojin Cho, and Yeong Nam Jung. "Analysis of Soil Stiffness Variation in Case of Cavity Generation in Underground below Subway Track using Light Weight Deflectometer." Journal of Korean Society of Hazard Mitigation 15, no. 6 (2015): 87–99. http://dx.doi.org/10.9798/kosham.2015.15.6.87.

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White, David J., Pavana Vennapusa, Erol Tutumluer, William (Bill) Vavrik, Maziar Moaveni, and Steven Gillen. "Spatial Verification of Modulus for Pavement Foundation System." Transportation Research Record: Journal of the Transportation Research Board 2672, no. 52 (2018): 333–46. http://dx.doi.org/10.1177/0361198118782266.

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This paper presents the results of a field study recently completed on an Illinois Tollway construction project, in which intelligent compaction (IC) measurements were calibrated on site with in situ elastic modulus (E), resilient modulus (Mr), modulus of subgrade reaction ( k), and California bearing ratio (CBR) testing. The purpose of the field calibration was to generate geo-referenced spatial modulus maps that can be used for field verification of design input parameters. E values were obtained using light weight deflectometer (LWD), stress-dependent Mr values and static k values were obta

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Pang, Jinsong, Jingli Yang, Bin Zhu, and Jinsong Qian. "Study of Regression Algorithms and Influent Factors between Intelligent Compaction Measurement Values and In-Situ Measurement Values." Applied Sciences 13, no. 10 (2023): 5953. http://dx.doi.org/10.3390/app13105953.

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Intelligent compaction (IC) technology have been used for quality control and quality assurance (QC/QA) in subgrade construction. The effective regression correlations between Intelligent Compaction Measurement Values (ICMV) and In-situ Measurement Values (ISMV, including compaction degree and subgrade modulus ELWD) are the essential prerequisite of using IC technology for QC/QA. This paper presents the results from an experimental research study that was conducted from a practical subgrade project of China to explore the regression relationships between ICMV and ISMV. Three types of ICMV, inc

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Kang, Mingu, Han Wang, Issam I. A. Qamhia, Erol Tutumluer, and Jeb S. Tingle. "Local Stiffness Assessment of Geogrid-Stabilized Unbound Aggregates in a Large-Scale Testbed." Applied Sciences 14, no. 1 (2023): 352. http://dx.doi.org/10.3390/app14010352.

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This paper integrates and extends an earlier article presented at the 20th International Conference on Soil Mechanics and Geotechnical Engineering. The generation of a stiffened zone in the proximity of a geogrid is one of the primary mechanisms of mechanical stabilization of pavement unbound aggregate layers using geogrids. This paper focuses on the quantification of the stiffened zone through a local stiffness assessment using bender element (BE) sensors. Unbound aggregate base layers were constructed in a large-scale laboratory testbed. Geogrid-stabilized layers had geogrids with different-

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Park, Bongsik, Yeong-Tae Choi, and Sung Ho Hwang. "Ballasted Track Status Evaluation Based on Apparent Track Stiffness Index." Applied Sciences 10, no. 14 (2020): 4729. http://dx.doi.org/10.3390/app10144729.

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Currently, maintenance work for ballasted track is performed based on the Track Quality Index (TQI) without a fundamental cause investigation for track irregularity. In this study, a new evaluation standard for ballasted track status is proposed to overcome the limitations of current maintenance work. The new evaluation standard is based on the stiffness index. The stiffness index is defined as the difference between the average and standard deviation of the apparent track stiffness determined by a light falling weight deflectometer (LFWD). After some field tests and analysis, it is shown that

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Grajewski, Sylwester M. "Prediction of Primary Deformation Modulus Based on Bearing Capacity: A Case on Forest Road with a Light Falling Weight Deflectometer Zorn ZFG 3000 GPS." Forests 13, no. 11 (2022): 1874. http://dx.doi.org/10.3390/f13111874.

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Bearing capacity and compaction are among the most important and frequently used geotechnical parameters in road construction. The aim of this study was to determine the possibility of predicting the value of the primary deformation modulus E1 (obtained from measurements using a static plate load test—PLT) based on measurements with a Zorn light falling weight deflectometer (LFWD), type ZFG 3000 GPS, with a drop weight of 10 kg. A regression analysis was performed on 245 bearing capacity measurements that were taken on 46 forest road sections with various road surfaces. Different regression mo

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Boston, Kevin, Robert Robek, and Jesse Rathom. "The Potential Use of the Light Drop-Weight Deflectometer to Control Subgrade Compaction on Forest Roads." Western Journal of Applied Forestry 24, no. 2 (2009): 83–87. http://dx.doi.org/10.1093/wjaf/24.2.83.

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Abstract Improving subgrade strength can reduce a road's construction and maintenance costs. Additionally, it may lessen some of the environmental impacts from forest roads. However, most forest roads receive little effort to establish or control compaction because of the perceived increase in construction costs and potential delays in the flow of wood from the area. A light drop-weight deflectometer was tested on two forest roads in western Oregon to determine if this tool could aid with improving forest road construction by improving the quality of the road's subgrade. One road was built on

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Pospisil, Karel, Petr Zednik, and Josef Stryk. "Relationship between deformation moduli obtained using light falling weight deflectometer and static plate test on various types of soil." BALTIC JOURNAL OF ROAD AND BRIDGE ENGINEERING 9, no. 4 (2014): 251–59. http://dx.doi.org/10.3846/bjrbe.2014.31.

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There is increasing effort to optimize test methods for evaluation of subgrade. It takes effect in aspiration in replacement of static plate loading test by other faster test methods. One of them is the use of Light Falling Weight Deflectometer. In many countries in Europe both static and dynamic plate tests are standardized. The presented paper introduces results of the research project dealing with the sensitivity of the relationship between static modulus and modulus obtained from the Light Falling Weight Deflectometer on specific types of soil. It is shown that there are significant differ

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Ryden, Nils, and Michael A. Mooney. "Analysis of surface waves from the light weight deflectometer." Soil Dynamics and Earthquake Engineering 29, no. 7 (2009): 1134–42. http://dx.doi.org/10.1016/j.soildyn.2009.01.002.

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Suits, L. D., T. C. Sheahan, Pavana K. R. Vennapusa, and David J. White. "Comparison of Light Weight Deflectometer Measurements for Pavement Foundation Materials." Geotechnical Testing Journal 32, no. 3 (2009): 101704. http://dx.doi.org/10.1520/gtj101704.

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Ebrahimi, Ali, and Tuncer B. Edil. "Light-weight deflectometer for mechanistic quality control of base course materials." Proceedings of the Institution of Civil Engineers - Geotechnical Engineering 166, no. 5 (2013): 441–50. http://dx.doi.org/10.1680/geng.11.00011.

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Senseney, Christopher T., Richard A. Krahenbuhl, and Michael A. Mooney. "Genetic Algorithm to Optimize Layer Parameters in Light Weight Deflectometer Backcalculation." International Journal of Geomechanics 13, no. 4 (2013): 473–76. http://dx.doi.org/10.1061/(asce)gm.1943-5622.0000222.

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Bilodeau, Jean-Pascal, and Guy Doré. "Stress distribution experienced under a portable light-weight deflectometer loading plate." International Journal of Pavement Engineering 15, no. 6 (2013): 564–75. http://dx.doi.org/10.1080/10298436.2013.772612.

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Tompai, Zoltán. "Laboratory evaluation of B & C small-plate light falling weight deflectometer." Periodica Polytechnica Civil Engineering 52, no. 2 (2008): 103. http://dx.doi.org/10.3311/pp.ci.2008-2.07.

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Benedetto, A., F. Tosti, and L. Di Domenico. "Elliptic model for prediction of deflections induced by a Light Falling Weight Deflectometer." Journal of Terramechanics 49, no. 1 (2012): 1–12. http://dx.doi.org/10.1016/j.jterra.2011.10.003.

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Kuttah, Dina. "Determining the resilient modulus of sandy subgrade using cyclic light weight deflectometer test." Transportation Geotechnics 27 (March 2021): 100482. http://dx.doi.org/10.1016/j.trgeo.2020.100482.

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Livneh, Moshe, and Yair Goldberg. "Quality Assessment During Road Formation and Foundation Construction: Use of Falling-Weight Deflectometer and Light Drop Weight." Transportation Research Record: Journal of the Transportation Research Board 1755, no. 1 (2001): 69–77. http://dx.doi.org/10.3141/1755-08.

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Chou, Chia-Pei, Yi-Chun Lin, and Ai-Chin Chen. "Temperature Adjustment for Light Weight Deflectometer Application of Evaluating Asphalt Pavement Structural Bearing Capacity." Transportation Research Record: Journal of the Transportation Research Board 2641, no. 1 (2017): 75–82. http://dx.doi.org/10.3141/2641-10.

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Volovski, Matthew, Samuel Labi, Kurt Sommer, Samy Noureldin, and Ron Walker. "Developing statistical limits for using the light weight deflectometer in pavement construction quality assurance." Road Materials and Pavement Design 19, no. 4 (2017): 783–802. http://dx.doi.org/10.1080/14680629.2016.1274269.

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Alshibli, Khalid A., Murad Abu-Farsakh, and Ekrem Seyman. "Laboratory Evaluation of the Geogauge and Light Falling Weight Deflectometer as Construction Control Tools." Journal of Materials in Civil Engineering 17, no. 5 (2005): 560–69. http://dx.doi.org/10.1061/(asce)0899-1561(2005)17:5(560).

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Bilodeau, Jean-Pascal, Guy Doré, and Catherine Savoie. "Laboratory evaluation of flexible pavement structures containing geocomposite drainage layers using light weight deflectometer." Geotextiles and Geomembranes 43, no. 2 (2015): 162–70. http://dx.doi.org/10.1016/j.geotexmem.2015.02.002.

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Park, Bongsik, Yeong-Tae Choi, and Sung Ho Hwang. "Evaluation of Apparent Track Stiffness According to Loading Level - Light-Weight Deflectometer and Train Loading -." Journal of the Korean Society for Railway 21, no. 7 (2018): 690–700. http://dx.doi.org/10.7782/jksr.2018.21.7.690.

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