Academic literature on the topic 'Unconfined Compressive Strength'

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Journal articles on the topic "Unconfined Compressive Strength"

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Liao, Ying Di, Chao Hua Jiang, and Xing Guo Feng. "An Empirical Correlation between Unconfined Compression Strength and Curing Time for Cement-Soil." Applied Mechanics and Materials 268-270 (December 2012): 642–45. http://dx.doi.org/10.4028/www.scientific.net/amm.268-270.642.

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Different cement types were used to stabilize coastal soft soil. The unconfined compression strength of each cement type treated soil was tested at different curing time. The results showed that the higher strength degree cement lead to the higher unconfined compression strength with same cement addition after curing 90 days. An empirical correlation between unconfined compressive strength and curing time was presented to forecast the unconfined compression strength of cement-soil. Additionally, the 14 day and the data of unconfined compressive strength at that time were suggested to use as the
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Fam, M. A., and M. B. Dusseault. "Effect of unloading duration on unconfined compressive strength." Canadian Geotechnical Journal 36, no. 1 (1999): 166–72. http://dx.doi.org/10.1139/t98-074.

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This note examines the effect of unloading duration on unconfined compression test results. Artificial clayey specimens were prepared using the slurry consolidation technique. Extracted specimens were loaded vertically under K0 conditions, and the load was kept constant until the end of primary consolidation. Specimens were unloaded and unconfined compression tests were carried out at different times after unloading. It is observed that the longer the unloading duration, the lower the measured unconfined strength. This behavior is attributed to the presence of negative excess pore pressure tha
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Daozheng, Qi, Gu Cong, Fu Jiajia, and Wang Yao. "Experimental study on the strength of silty soft soil in beach with polypropylene fiber reinforcement." Science Journal Innovation Technologies Transfer, no. 2020-2 (September 28, 2020): 10–17. http://dx.doi.org/10.36381/iamsti.2.2020.10-17.

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The effects of polypropylene fiber reinforcement on shear strength and unconfined compressive strength of silty soft soil in tidal flats were studied. Through shear test and unconfined compression test, Experimental study was conducted on silty soft soil of allene fiber reinforced beach with 0~0.6% different mass content and 3 ~18m different length. The failure process and mechanism of fiber reinforced soil samples were also discussed. The test results show that: Shear strength (cohesion and internal friction Angle) and unconfined compressive strength increased rapidly in the early stage with
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Wang, Chen, and Wentao Li. "Factors Affecting the Mechanical Properties of Cement-Mixed Gravel." Advances in Materials Science and Engineering 2016 (2016): 1–7. http://dx.doi.org/10.1155/2016/8760325.

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A study has been conducted to investigate the mechanical properties of cement-mixed gravel using the unconfined compression test and the tensile test. Basic factors including the curing period, the water-binder ratio, the cement content, and the strain rate were evaluated. Ordinary Portland cement with fly ash was employed as the cementation agent for preparing cemented samples. The results indicate that the unconfined compressive strength, the deformation modulus, and the tensile strength increase with the increase in the curing period. The ratio of tensile strength to unconfined compressive
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Zhao, Xia. "Study of Correlation on Unconfined Compressive Strength between Different Soil." Advanced Materials Research 838-841 (November 2013): 926–29. http://dx.doi.org/10.4028/www.scientific.net/amr.838-841.926.

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Take the silty clay and clay as the research object, the correlation between bulk density, moisture content, cohesion, friction angle and unconfined compressive strength was analyzed using laboratory tests, and the results showed that soil cohesion, friction angle and unconfined compressive strength with good correlation, the correlation coefficients were all above 0.9, while severe and soil moisture content and unconfined compressive strength of correlation is weak, followed by the correlation formulas of the index and unconfined compressive strength were established, these formulas can used
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Zhang, Deheng, Fenqiang Xu, Yan Zhang, and Fang Li. "Study on Strength and Deformation Characteristics of Expansive Soils Treated with Lime-biomass Ash." Journal of Solid Waste Technology and Management 47, no. 4 (2021): 653–58. http://dx.doi.org/10.5276/jswtm/2021.653.

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This paper investigates the strength deformation of the lime-biomass ash treated expansive soils. The unconfined compressive strength, one-dimensional compression of the modified expansive soil of compaction were studied. The results showed that the maximum dry density and optimum moisture content of expansive soil decreased with the increase of lime and biomass ash content; The unconfined compressive strength test results show that there is no remarkable change in the unconfined compressive strength of the soils immediately treated with biomass ash, but the sample after 7 days of curing perio
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Uchaipichat, Anuchit. "Influence of Curing Pressure on Unconfined Compressive Strength of Cemented Clay." Materials Science Forum 928 (August 2018): 263–68. http://dx.doi.org/10.4028/www.scientific.net/msf.928.263.

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The soil-cement columns are generally installed and cured in the soft clay layers under confining pressure. The strength of the soil-cement columns may be influenced by confining pressure during curing period. In this study, the main objective was to study the influence of curing pressure on unconfined compressive strength of cemented clay. A series of unconfined compression tests was performed on a cement admixed clay sample cured under pressure values of 0 kPa (atmospheric pressure), 25kPa, 50kPa and 100 kPa using a typical unconfined compression equipment. The test samples with values of ce
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Hastuty, Ika Puji. "Comparison of the Use of Cement, Gypsum, and Limestone on the Improvement of Clay through Unconfined Compression Test." Journal of the Civil Engineering Forum 5, no. 2 (2019): 131. http://dx.doi.org/10.22146/jcef.43792.

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Soil stabilization is an effort to improve soil properties by adding additives in the soil to increase the soil strength and maintain the shear strength of the soil. There are many materials which can be used as stabilizers. The materials used in this study were cement, gypsum, and limestone, then the compressive strength values were compared by using the Unconfined Compression Test (UCT). The mixture combinations used in this study were 1% to 10% of cement, gypsum, and limestone on clay by curing for 14 days. The compressive strength value resulted from the unconfined compression test on the
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Zhang, Lisha, Yuan Li, Xiao Wei, Xin Liang, Jinhong Zhang, and Xuchen Li. "Unconfined Compressive Strength of Cement-Stabilized Qiantang River Silty Clay." Materials 17, no. 5 (2024): 1082. http://dx.doi.org/10.3390/ma17051082.

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Cement-stabilization of weak and soft soils is an efficient way for ground improvement. Traditional Portland cement remains the most popular cementitious material in practice, and thus, a proper dosage design of cement-stabilized soil is of practical interest to meet the sustainable engineering requirements and to remedy environmental concerns. Based on the unconfined compression test of cement-stabilized Qiantang River silty clay, the effects of cement content, mixing moisture content, mixing-water-to-cement ratio, and curing time on the unconfined compressive strength were investigated. The
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Chen, Ai Jun, Jia Sheng Zhang, Li Ying Peng, and Zhen Hua Ren. "Indoor Experimental Research on the Unconfined Compressive Strength of Lime Improving Expansive Clay." Advanced Materials Research 250-253 (May 2011): 2296–301. http://dx.doi.org/10.4028/www.scientific.net/amr.250-253.2296.

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Guangxi province is the typical expansive soil area, and the unconfined compressive strength is the important strength index. There is little studied result about the unconfined compressive strength of expansive soil in Guangxi province. Based on the expansive clay experimental embankment of Nanyou Highway, the experimental research on the unconfined compressive strength was undertaken. Tests results indicate that the expansive clay samples are all disintegrated when the sample is dip in water, which show that the stability of expansive clay is very weak. Some lime improving samples of curling
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Dissertations / Theses on the topic "Unconfined Compressive Strength"

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GUERRERO, LENIN ALBERTO MORA. "USE OF THE DRILLING PARAMETERS FOR ASSESSMENT THE UNCONFINED COMPRESSIVE STRENGTH." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2008. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=12572@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>A resistência não confinada (UCS) é um parâmetro de interesse na análise de problemas geomecânicos: estabilidade de poços, restrição quantitativa das magnitudes das tensões in situ, determinação do potencial de produção de areia e seleção de brocas. É intuitivo que a resposta da broca de perfuração deveria refletir as propriedades de resistência da rocha sob as condições reais no fundo do poço. Porém a taxa de perfuração (ROP) é dependente de um número de outros parâmetro
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Farah, Raoaa. "Correlations Between Index Properties and Unconfined Compressive Strength of Weathered Ocala Limestone." UNF Digital Commons, 2011. http://digitalcommons.unf.edu/etd/142.

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Weathering has a negative effect on both physical and engineering properties of rock specimens and rock masses. When rock masses are weathered it is often difficult to obtain core segments that are the correct size for unconfined compressive strength testing. Thus engineers must use index testing to estimate the strength of specimens for design purposes. This thesis relates the unconfined compressive strength to index strength tests of Ocala limestone. The relationships developed include weathering states of the specimens and proximity of unconfined compressive strength specimens to index spec
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Pham, Ngoc V. "Optimizing Compressive Strength of Soil Stabilization with Cementitious Binders Using Artificial Intelligence Techniques." Thesis, Griffith University, 2022. http://hdl.handle.net/10072/418280.

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This research developed reliable prediction models for the unconfined compressive strength (UCS) of soil stabilization with common cementitious binders, such as lime, cement, fly ash, and blast-furnace slag. Several Artificial Intelligent (AI) techniques, including Artificial neural network (ANN), Multi-Gene Genetic Programming (MGGP), and Gene-expression programming (GEP), are applied to generate the prediction formulas. Some experimental data from the doctoral thesis of Dr. Bolton and Dr. Do are used to develop AI-based models as case studies. In addition, a thousand comprehensive data point
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Heavin, Joseph Carl. "Influence of Material Type, Aggregate Size, and Unconfined Compressive Strength on Water Jetting of CIDH Pile Anomalies." DigitalCommons@CalPoly, 2010. https://digitalcommons.calpoly.edu/theses/266.

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Water jetting as a means for removing anomalous materials from cast-in-drilled-hole (CIDH) piles was examined. The primary objective of this research was to establish empirical relationships between different jetting parameters and the removal of commonly occurring anomalous zone materials, including low-strength concrete, slurry mixed concrete, grout, and clay soil. Also investigated was the current standard-of-practice used by water jetting contractors within California. The testing specimens consisted of typical anomalous material with unconfined compressive strengths between 5 and 6,000
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McFaddin, Jared Douglas. "Development of Correlations for Unconfined Compression Strength and Methods of Field Preparations and Preservation of Kope Shale." University of Cincinnati / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1217259954.

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Yeo, Yang Sheng. "Characterisation of cement-treated crushed rock basecourse for Western Australian roads." Thesis, Curtin University, 2011. http://hdl.handle.net/20.500.11937/2277.

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Cement treatment for pavement basecourse materials results in the creation of cement treated basecourse which is either classified as "modified" or "stabilised". The two classifications perform differently in service, with susceptibility to fatigue being the most obvious characteristic delineating the two. This classification methodology is currently quantified based on Unconfined Compressive Strength (UCS) ranges.Throughout the 1990s to the early 2000s, Main Roads Western Australia (MRWA) has investigated various basecourse products created by adding cement. However, due to unexpected behavio
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Ghazi, Ali Faisal. "Engineering characteristics of compacted sand-bentonite mixtures." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2015. https://ro.ecu.edu.au/theses/1615.

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Sand-clay mixtures are commonly used as a liner/barrier material in various engineering applications, such as construction of hydraulic and waste containments. Permeability, compressibility and strength are important properties of sand-clay mixtures and are often required for the design of the liner/barrier of the containments. In states like Western Australia, which is covered mostly by sandy soils, engineers face difficulties with economically sourcing clays for liner/barrier applications. Any reliable research finding that recommends an optimum clay content to be used with sandy soil can be
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Ali, Hatim, and Mostafa H. A. Mohamed. "Assessment of lime treatment of expansive clays with different mineralogy at low and high temperatures." Elseveir, 2019. http://hdl.handle.net/10454/17536.

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Yes<br>This paper examines the impacts of clay mineralogy on the effectiveness of lime stabilisation at different temperatures. A comprehensive experimental programme was conducted to track down the evolution of lime-clay reactions and their durations through monitoring the evolution of strength gain at predetermined times using the Unconfined Compressive Strength (UCS) test. The study examined clays with different mineralogy compositions comprising Na+ Bentonite and Ball (Kaolinite) clay. Four different clays were tested including 100% bentonite, 100% Ball clay and two clay mixtures with rati
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Zhang, Lianyang. "Determination and applications of rock quality designation (RQD)." Elsevier/SCIENCE PRESS, 2016. http://hdl.handle.net/10150/622156.

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Characterization of rock masses and evaluation of their mechanical properties are important and challenging tasks in rock mechanics and rock engineering. Since in many cases rock quality designation (RQD) is the only rock mass classification index available, this paper outlines the key aspects on determination of RQD and evaluates the empirical methods based on RQD for determining the deformation modulus and unconfined compressive strength of rock masses. First, various methods for determining RQD are presented and the effects of different factors on determination of RQD are highlighted. Then,
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Ren, Xin. "Complete Recycling and Utilization of Waste Concrete Through Geopolymerization." Diss., The University of Arizona, 2015. http://hdl.handle.net/10150/577187.

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This research investigates complete recycling and utilization of waste concrete to produce new structural concrete through geopolymerization. The investigation was conducted through both macro-and micro/nano-scale studies. First the geopolymer paste synthesized using a mixture of waste concrete fines (WCF) and class F fly ash (FA) as the source material and a mixture of NaOH solution (N) and Na2SiO3 solution (SS) as the alkaline activating agent was studied. Various NaOH concentrations, SS/N ratios, and WCF contents were used to produce geopolymer paste specimens in order to study their effect
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Books on the topic "Unconfined Compressive Strength"

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Ruenkrairergsa, Teeracharti. Khwāmsamphan rawāng unconfined compressive strength kap unsoaked CBR khō̜ng lūkrang phasom sīmēn. Krom Thāng Lūang, Krasūang Khamanākhom, 1991.

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Ruenkrairergsa, Teeracharti. Khwāmsamphan rawāng unconfined compressive strength kap unsoaked CBR khō̜ng dinnīeo chēn phasom pūnkhāo. Krom Thāng Lūang, Krasūang Khamanākhom, 1991.

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Geological Survey (U.S.), ed. Unconfined compressive strength on rock samples representative of the types found in Bronx County, New York. U.S. Dept. of the Interior, Geological Survey, 1987.

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Cold Regions Research and Engineering Laboratory (U.S.), ed. Axial double-ball test versus the uniaxial unconfined compression test for measuring the compressive strength of freshwater and sea ice. US Army Corps of Engineers, Cold Regions Research & Engineering Laboratory, 1993.

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Book chapters on the topic "Unconfined Compressive Strength"

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Najvani, Mohammad Amin D., Daniel Heras Murcia, and Mahmoud Reda Taha. "Evolution of Early-Age Mechanical and Failure Behavior of 3D Printed Polymer Concrete." In Springer Proceedings in Materials. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-72955-3_59.

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AbstractThe increasing interest in 3d printing of concrete for infrastructure applications necessitates having a design for this process. Previous research has mostly focused on 3D printable cement-based concrete mixes, with less attention given to 3D printed polymer concrete (PC). PC is a concrete type that uses polymer instead of cement as a binder. It offers improved compressive and tensile strengths, crack resistance and bond strengths, and superior durability than traditional Portland cement concrete, making it an excellent material for 3D printing. This study aims to understand the evolu
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Osinubi, Kolawole J., John E. Sani, Adrian O. Eberemu, Thomas S. Ijimdiya, and Sabo E. Yakubu. "Unconfined Compressive Strength of Bacillus Pumilus Treated Lateritic Soil." In Proceedings of the 8th International Congress on Environmental Geotechnics Volume 3. Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-2227-3_51.

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Wath, R. B., and S. S. Pusadkar. "Unconfined Compressive Strength of MICP-Treated Black Cotton Soil." In Lecture Notes in Civil Engineering. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-9988-0_4.

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Saranya, N., and D. N. Arnepalli. "Effect of Pore Size Distribution on Unconfined Compressive Shear Strength." In Lecture Notes in Civil Engineering. Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0899-4_10.

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Kannur, Bhupati, Hemant S. Chore, and Swati Yede. "Unconfined Compressive Strength of Fly Ash-Soil–lime-Fiber System." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-4739-1_55.

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Chore, H. S., Anurag M. Khadse, and Aditya D. Ahirwar. "Unconfined Compressive Strength of Clayey Soil Stabilized with Marble Dust." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-4739-1_57.

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Wang, Bo, Huimin Hu, and Jianglong Yao. "Experimental Study on the Effect of Redispersible Latex Powder on Pavement Performance of Road Base." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-5814-2_1.

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AbstractThrough unconfined compressive strength test, flexural tensile strength test, freeze-thaw test, dry shrinkage test and SEM, the improvement effect and mechanism of redispersible latex powder on the mechanical properties of recycled cement stabilized macadam were studied. The results show that the flexural and tensile strength of recycled cement stabilized macadam mixture increased and the compressive strength decreased slightly after adding latex powder. With the addition of latex powder, the BDR value of cement stabilized macadam increased, and the frost resistance of the mixture impr
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Qi, Zhi-Hong, Xue-Yuan Xu, Mi-Lin Zhu, and Yang Hu. "Unconfined Compressive Strength of Mixture of Phosphogypsum-Fly Ash-Lime-Clay." In Advances in Environmental Geotechnics. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-04460-1_90.

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Spagnoli, G., W. Seidl, E. Romero, M. Arroyo, R. Gómez, and J. López. "Unconfined compressive strength of sand-fines mixtures treated with chemical grouts." In Geotechnical Aspects of Underground Construction in Soft Ground. 2nd Edition, 2nd ed. CRC Press, 2022. http://dx.doi.org/10.1201/9781003355595-109.

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Zarei, Afshin, Samid Zarei, Saber Imanzadeh, Nasre-dine Ahfir, Said Taibi, and Teddy Lesueur. "Uncertainties on the Unconfined Compressive Strength of Raw and Textured Concrete." In Proceedings of the 6th International Symposium on Uncertainty Quantification and Stochastic Modelling. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-47036-3_5.

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Conference papers on the topic "Unconfined Compressive Strength"

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Acharya, Manish, Tadesse G. Wakjira, and Mustafa Mashal. "Study on Confinement of Ultra-High Performance Concrete Using Ties." In IABSE Symposium, Tokyo 2025: Environmentally Friendly Technologies and Structures: Focusing on Sustainable Approaches. International Association for Bridge and Structural Engineering (IABSE), 2025. https://doi.org/10.2749/tokyo.2025.0259.

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&lt;p&gt;Ultra-high-performance concrete (UHPC) has been gaining increased popularity due to its higher strength and ductility than conventional concrete, promoting sustainability through resource efficiency and extended structural life. Accurate modeling of UHPC structures relies on a stress- strain model for confined UHPC. While many studies have examined the unconfined compressive behavior of UHPC, limited research focuses on confined compressive behavior. This has become a challenge for the adoption of UHPC, especially in seismic regions. Thus, this study presents an experimental test resu
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Nabaei, Mohammad, Khalil Shahbazi, Arash Shadravan, and Mahmood Amani. "Uncertainty Analysis in Unconfined Rock Compressive Strength Prediction." In SPE Deep Gas Conference and Exhibition. Society of Petroleum Engineers, 2010. http://dx.doi.org/10.2118/131719-ms.

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Ghorbanpour, Amin B., and Xinbao Yu. "Unconfined Compressive Strength of Mine Tailings Amended with Fly Ash." In Eighth International Conference on Case Histories in Geotechnical Engineering. American Society of Civil Engineers, 2019. http://dx.doi.org/10.1061/9780784482117.012.

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Widianti, Anita, Willis Diana, and Zahroh Shofiyatul Fikriyah. "Unconfined Compressive Strength of Clay Strengthened by Coconut Fiber Waste." In 4th International Conference on Sustainable Innovation 2020–Technology, Engineering and Agriculture (ICoSITEA 2020). Atlantis Press, 2021. http://dx.doi.org/10.2991/aer.k.210204.010.

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Diana, Willis, Weny Irma Wardhani, Agus Setyo Muntohar, and Edi Hartono. "The unconfined compressive strength of fly-ash geopolymer-stabilized sand." In XVII MEXICAN SYMPOSIUM ON MEDICAL PHYSICS. AIP Publishing, 2023. http://dx.doi.org/10.1063/5.0154307.

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Enayatpour, Saeid, Anand J. Puppala, and Hariharan Vasudevan. "Dynamic Cone Penetrometer to Evaluate Unconfined Compressive Strength of Stabilized Soils." In GeoShanghai International Conference 2006. American Society of Civil Engineers, 2006. http://dx.doi.org/10.1061/40861(193)37.

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Jahidin, Ridzuan, Aminaton Marto, Faizal Pakir, and Siti Norafida Jusoh. "Unconfined compressive strength of compacted marine clay treated with magnesium chloride." In PROCEEDINGS OF SCIEMATHIC 2020. AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0053471.

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Rozhko, A. "Unconfined Compressive Strength of Partially Saturated Shales: the Fracture Mechanics Approach." In EAGE Shale Workshop 2010. EAGE Publications BV, 2010. http://dx.doi.org/10.3997/2214-4609.20145403.

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Ruchitha, H. K., B. S. Sanjana Sharma, Sneha, Niharika Kiran, Trupthi Rao, and K. Ashwini. "Evaluation of Unconfined Compressive Strength of Cement using Ensemble Learning Regression." In 2022 IEEE International Conference on Electronics, Computing and Communication Technologies (CONECCT). IEEE, 2022. http://dx.doi.org/10.1109/conecct55679.2022.9865736.

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Sadikon, S. F., and R. Keria. "Soil stabilization using coconut fiber: Experimental on unconfined compressive strength performance." In INTERNATIONAL CONFERENCE OF MATHEMATICS AND MATHEMATICS EDUCATION (I-CMME) 2021. AIP Publishing, 2022. http://dx.doi.org/10.1063/5.0111339.

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Reports on the topic "Unconfined Compressive Strength"

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Vankirk, George, Andreas Frank, Michael Roth, Brett Williams, and William Heard. Residual strength of a high-strength concrete subjected to triaxial prestress. Engineer Research and Development Center (U.S.), 2024. http://dx.doi.org/10.21079/11681/48055.

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This study investigates simplified mechanical loading paths that represent more complex loading paths observed during penetration using a triaxial chamber and a high-strength concrete. The objective was to determine the effects that stress-strain (load) paths have on the material’s unconfined compressive (UC) residual strength. The loading paths included hydrostatic compression (HC), uniaxial strain in compression (UX), and uniaxial strain load biaxial strain unload (UXBX). The experiments indicated that the load paths associated with nonvisible microstructural damage were HC and UX—which prod
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Onishi, Yasuo, Ellen BK Baer, Jaehun Chun, et al. Development of K-Basin High-Strength Homogeneous Sludge Simulants and Correlations Between Unconfined Compressive Strength and Shear Strength. Office of Scientific and Technical Information (OSTI), 2011. http://dx.doi.org/10.2172/1027186.

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Pfeifle, T. W., P. E. Senseny, and K. D. Mellegard. Influence of variables on the consolidation and unconfined compressive strength of crushed salt: Technical report. Office of Scientific and Technical Information (OSTI), 1987. http://dx.doi.org/10.2172/6883385.

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Kovacs, Austin. Axial Double-Ball Test Versus the Uniaxial Unconfined Compression Test for Measuring the Compressive Strength of Freshwater and Sea Ice. Defense Technical Information Center, 1993. http://dx.doi.org/10.21236/ada277025.

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Scott, Dylan, Stephanie Wood, Bradford Songer, et al. Development and characterization of ultra-high-performance concrete for the rehabilitation of navigation lock structures. Engineer Research and Development Center (U.S.), 2023. http://dx.doi.org/10.21079/11681/47684.

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This report details the history of vertical lock wall repairs and the development and laboratory characterization of an ultra-high-performance concrete (UHPC) using locally sourced materials for improved durability of lock walls subjected to impact and abrasion from navigational vessels. This UHPC, referred to as Lock-Tuf, has been designed for use in a precast environment with ambient curing methods and serves as a material proof-of-concept for future lock wall rehabilitations. Mechanical properties such as unconfined compressive strength, flexural response, tensile capacity, impact resistanc
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Davis, E. R. Unconfined compressive strength (UCS) and pentrometer UCS approximations of core (4,309.5'-4,409') from the BP Exploration (Alaska) Inc. Milne Point G-1 well. Alaska Division of Geological & Geophysical Surveys, 2004. http://dx.doi.org/10.14509/19161.

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Becker, Peter J. Using the Light Weight Deflectometer for Performance-Based Quality Assurance Testing of Cement Modified Subgrades. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317304.

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This report documents the findings from SPR-4230 (Alternative Quality Assurance Methods for Compacted Subgrade). The main objective of SPR-4230 involved establishing performance-related quality assurance (QA) test methods for pavement subgrade construction. Because INDOT generally prefers specifying subgrade treatment type IBC (i.e., 14-in. cement modified subgrade), this study focused on performance-based QA test methods for constructing cement modified subgrade. Moreover, INDOT prefers using light weight deflectometer (LWD) for chemically modified subgrade construction acceptance, so this st
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Shivakumar, Pranavkumar, Kanika Gupta, Antonio Bobet, Boonam Shin, and Peter J. Becker. Estimating Strength from Stiffness for Chemically Treated Soils. Purdue University, 2022. http://dx.doi.org/10.5703/1288284317383.

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The central theme of this study is to identify strength-stiffness correlations for chemically treated subgrade soils in Indiana. This was done by conducting Unconfined Compression (UC) Tests and Resilient Modulus Tests for soils collected at three different sites—US-31, SR-37, and I-65. At each site, soil samples were obtained from 11 locations at 30 ft spacing. The soils were treated in the laboratory with cement, using the same proportions used for construction, and cured for 7 and 28 days before testing. Results from the UC tests were compared with the resilient modulus results that were av
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