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Journal articles on the topic 'Unconfined Compressive Strength'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

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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2

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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3

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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4

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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5

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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6

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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7

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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8

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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9

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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10

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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11

Uchaipichat, Anuchit. "Correlation between Unconfined Compressive Strength and Penetration Index Obtained from DCP Tests for Cemented Lateritic Soils." Key Engineering Materials 814 (July 2019): 399–403. http://dx.doi.org/10.4028/www.scientific.net/kem.814.399.

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This paper presents the relationship between the dynamic cone penetration (DCP) test results and the unconfined compressive strength of lateritic cemented soils. A series of DCP tests and unconfined compressive strength was performed on lateritic cemented soil. The soils sample used in this study was lateritic soil. The test results for the DCP tests are presented in terms of penetration index. It can be observed that the penetration index decreased with increasing curing period and cement content. Moreover, the unconfined compressive strength of cemented soils increased with curing period and

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12

Li, Yinhe, Yong Liu, Hongbo Zhang, Ning An, and Zuolin Fan. "Experimental Study on the Flexural Performance of Geogrid-Reinforced Foamed Lightweight Soil." Buildings 15, no. 3 (2025): 461. https://doi.org/10.3390/buildings15030461.

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The flexural behavior of geogrid-reinforced foamed lightweight soil (GRFL soil) is investigated in this study using unconfined compressive and four-point bending tests. The effects of wet density and reinforcement layers on flexural performance are analyzed using load–displacement curves, damage patterns, load characteristics, unconfined compressive strength, and flexural strength. A variance study demonstrates that increasing the wet density significantly increases unconfined compressive strength. Bond stress mechanisms enable geogrid integration, efficiently reroute stresses internally, and

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13

Hu, Yanran, Shaorui Sun, and Kai Li. "Study on Influence of Moisture Content on Strength and Brittle-Plastic Failure Characteristics of Xiashu Loess." Advances in Civil Engineering 2023 (April 25, 2023): 1–10. http://dx.doi.org/10.1155/2023/5919325.

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To reveal the influence of water content on the strength characteristics and brittle-plastic failure process of Xiashu loess, the direct shear test and unconfined compressive strength test of Xiashu loess with different water content were carried out, and the influence of water content on its strength characteristics and brittle-plastic failure transformation characteristics was studied. Eight kinds of Xiashu loess with different moisture contents were designed, and a direct shear test and uniaxial compression test were carried out, respectively. The results show that with the increase in wate

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14

Santos, Olavo Francisco, João Paulo da Silva Costa, and Francisco Mateus Gomes Lopes. "Compressive and Tensile Strength of Artificially Cemented Dune Sand." Applied Mechanics and Materials 343 (July 2013): 51–61. http://dx.doi.org/10.4028/www.scientific.net/amm.343.51.

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Artificial cementation is a technique commonly used to improve the mechanical properties of soils for use in geotechnical engineering works, because it often provides economic and environmental advantages. In order to study the factors that influence the behavior of cemented dune sand from Natal, series of unconfined compression and splitting tension tests were performed. These tests showed that increasing the cement content and decreasing void ratio are effective ways to improve compressive strength. The same applies to tensile splitting strength. It was also established that both unconfined

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15

Tilak B., Vidya, Rakesh Kumar Dutta, and Bijayananda Mohanty. "Effect Of Coir Fibres On The Compaction And Unconfined Compressive Strength Of Bentonite-Lime-Gypsum Mixture." Slovak Journal of Civil Engineering 23, no. 2 (2015): 1–8. http://dx.doi.org/10.1515/sjce-2015-0006.

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Abstract This paper presents the effect of coir fibres on the compaction and unconfined compressive strength of a bentonite-lime-gypsum mixture. The coir fiber content varied from 0.5 to 2 %. The results indicated that the dry unit weight and the optimum moisture content of a bentonite – lime mix increased with the addition of gypsum. The unconfined compressive strength of the bentonite increased with the increase in the lime content up to 8 %. Beyond 8 %, the unconfined compressive strength decreased. The dry unit weight of the reference mix decreased, and the optimum moisture content increas

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16

Bo, Qirui, Junwei Liu, Wenchang Shang, Ankit Garg, Xiaoru Jia, and Kaiyue Sun. "Application of ANN in Construction: Comprehensive Study on Identifying Optimal Modifier and Dosage for Stabilizing Marine Clay of Qingdao Coastal Region of China." Journal of Marine Science and Engineering 12, no. 3 (2024): 465. http://dx.doi.org/10.3390/jmse12030465.

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Nowadays, the use of new compound chemical stabilizers to treat marine clay has gained significant attention. However, the complex non-linear relationship between the influencing factors and the unconfined compressive strength of chemically treated marine clay is not clear. In order to study the influence of various factors (dosage, type of stabilizer, curing age) on the unconfined compressive strength of solidified soil during chemical treatment, experiments were performed to determine the unconfined compressive strength of soft marine clay modified with various types of stabilizers. Further,

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17

Li, Jinpeng, Hong Xu, Lichuan Chen, et al. "Effect of Saturation Degree on Mechanical Behaviors of Shallow Unsaturated Expansive Soils." Sustainability 14, no. 21 (2022): 14617. http://dx.doi.org/10.3390/su142114617.

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In the southwest of China, there are widely distributed expansive soils. However, to save costs and manage the speed of construction, these shallow expansive soils are often filled with subgrade materials. Therefore, it is necessary to clearly understand the mechanical behaviors of unmodified shallow expansive soils. Current research on the mechanical behaviors of shallow expansive soils is mainly focused on shear and compressive strengths but rarely on the tensile strength since general tests are costly, time consuming, and difficult to conduct. Therefore, uniaxial tensile, unconfined compres

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18

Yasun, Azhar Sadiq. "Capability of Pocket Penetrometer to Evaluate Unconfined Compressive Strength of Baghdad Clayey Soil." Al-Nahrain Journal for Engineering Sciences 21, no. 1 (2018): 66. http://dx.doi.org/10.29194/njes21010066.

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Unconfined compressive strength represents an important parameter for soil investigation report test results because the values of cohesion and allowable bearing capacity can directly obtained from the relevant test especially if the clayey soil layers are found at sufficient enough depth above water table level. This paper deals with simple comparison (based on (31) soil samples) between unconfined compressive strength (qu) obtained by using the pocket soil penetrometer tool and the unconfined compressive strength using the conventional test for the same sample penetrated by the pocket

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19

Xing, Guoqi, Changjiang Liu, Wei Xuan, Yueyue Pan, Bing Zhang, and Yue Zhao. "Prediction of Unconfined Compression Strength for Saline-Alkaline Soils Mixed with Cement and Wheat Straw." Advances in Materials Science and Engineering 2020 (April 21, 2020): 1–14. http://dx.doi.org/10.1155/2020/2765145.

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A series of unconfined compression tests were performed to investigate the influence of wheat straws on the unconfined compression strength for saline-alkaline soils and saline-alkaline soils mixed with cement. In unconfined compression tests, 20 groups of soil specimens were prepared at five different percentages of wheat straws content (i.e., 0.0%, 0.1%, 0.15%, 0.2%, and 0.25% by weight of saline-alkaline soils) and four different percentages of cement content (i.e., 0%, 3%, 6%, and 9% by weight of saline-alkaline soils), and unconfined compression tests were carried out after 3-, 7-, 14-, 2

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20

Ayaz, Hassan, Jiancong Xu, Muhammad Usama Aslam, and Sohail Ahmad. "Evaluation of Petrographic and Geomechanical Properties of Inzari Formation Rocks for Their Suitability as Building Materials in the Nizampur Basin, Pakistan." Applied Sciences 14, no. 20 (2024): 9395. http://dx.doi.org/10.3390/app14209395.

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This study focuses on the petrographic and geomechanical properties of the Inzari Formation rocks in Tar Khel Village, District Swabi, Khyber Pakhtunkhwa, Pakistan, on their suitability as building materials for structures such as bridges, buildings, and roads. Five fresh samples from various areas of this formation were analyzed and identified as siliciclastic mudstone through petrographic analysis. The results of physical properties (water absorption, specific gravity, and porosity) and mechanical properties (unconfined compression strength, unconfined tensile strength, Schmidt hammer test,

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21

Sianturi, Novdin Manoktong, Mohd Khairul Amri Kamarudin, Dermina Roni Santika Damanik, Virgo Erlando Purba, and Deardo Samuel Saragih. "The Mechanical Behavior of Soft Soil Stabilized with Lime and Volcanic Ash." MEDIA KOMUNIKASI TEKNIK SIPIL 28, no. 1 (2022): 118–27. http://dx.doi.org/10.14710/mkts.v28i1.41963.

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The properties of soft clay can be seen from the compressive strength value through the unconfined compressive strength (UCS) test. Soft soil was less well used as the subgrade for construction. The aim is to determine the increase in the unconfined compressive strength and bearing capacity of the foundation due to the addition of lime and volcanic ash on soft soil. Soft soil has undrained shear strength < 25 kPa based on the unconfined compressive strength test. The unconfined compressive strength test has been conducted on the soil-lime mixture and soil-volcanic ash mixture of 3-12% respe

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22

Zhang, Yuguo, Weijie Zhang, Xiaojie Shi, Tai Guo, and Zhenghao Chen. "Experimental study on unconfined compressive strength of expansive soil improved by lignin and cement." E3S Web of Conferences 236 (2021): 02010. http://dx.doi.org/10.1051/e3sconf/202123602010.

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Aiming at the question of improvement expansive soil in Nanyang area, the composite improvement method of lignin and cement was adopted. Based on the unconfined compressive strength test, the variation law of unconfined compressive strength of improved expansive soil with different lignin content, different compaction degree and different curing age was studied. The test results show that the composite of lignin and cement can effectively improve the unconfined compressive strength of expansive soil. The unconfined compressive strength of L-C (lignin and cement) improved expansive soil reaches

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23

Jin, Weidong, Zhe Wang, Yongming Ai, and Chenyang Liu. "Analysis of Influencing Factors and Mechanism of Strength of Cement-Modified Silty Sand." Geofluids 2021 (November 1, 2021): 1–10. http://dx.doi.org/10.1155/2021/9414234.

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The unconfined compressive strength of cement-modified silty sand in Jilin Province was investigated in this study. For this purpose, various tests were conducted, including the screening test, compaction test, CBR test, X-ray fluorescence detection, and unconfined compressive strength test. Effects of compaction degree, soil quality, water quality, cement content, and curing age were considered. The results show that CBR value is positively correlated with compactness. Two kinds of different water qualities have little effect on unconfined compressive strength of cement-improved soil; with th

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24

Kim, Woo‐Sik, Nguyen Minh Tam, and Du‐Hwoe Jung. "Experimental study on strength of cement stabilized clay." Journal of Engineering, Design and Technology 3, no. 2 (2005): 116–26. http://dx.doi.org/10.1108/17260530510815358.

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This paper describes the effect of factors on the strength characteristics of cement treated clay from laboratory tests performed on cement mixed clay specimens. It is considered that several factors such as soil type, sample preparing method, quantity of binder, curing time, etc. can have an effect on strength characteristics of cement stabilized clay. A series of unconfined compression tests have been performed on samples prepared with different conditions. The results indicated that soil type, mixing method, curing time, dry weight ratio of cement to clay (Aw), and water‐clay to cement (wc/

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25

Santana, Teresa, João Gonçalves, Fernando Pinho, and Rui Micaelo. "Effects of the Ratio of Porosity to Volumetric Cement Content on the Unconfined Compressive Strength of Cement Bound Fine Grained Soils." Infrastructures 6, no. 7 (2021): 96. http://dx.doi.org/10.3390/infrastructures6070096.

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This paper presents an experimental investigation into the effects of porosity, dry density and cement content on the unconfined compressive strength and modulus of elasticity of cement-bound soil mixtures. A clayey sand was used with two different proportions of type IV Portland cement, 10% and 14% of the dry mass of the soil. Specimens were moulded with the same water content but using four different compaction efforts, corresponding to four different dry densities. Unconfined compression testing was conducted at seven days of curing time on unsoaked samples. The results showed that the comp

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26

Li, Rongjian, Shibin Zhang, Rongjin Li, Weishi Bai, and Lei Wang. "Experimental Study on Mechanical Behaviors of Loess Based on Two Different Modes of Oil Contamination." Geofluids 2022 (May 3, 2022): 1–11. http://dx.doi.org/10.1155/2022/6411520.

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When loess is contaminated by oil, different modes of contamination will have a certain impact on the mechanical behaviors of loess in the oil-production areas. This study is aimed at evaluating the effect of diesel oil contamination on mechanical behaviors of loess through extensive laboratory tests. Two different modes of oil contamination were proposed and applied in compression tests, direct shear tests, and unconfined compressive strength tests to study the compressibility and strength characteristics of diesel-contaminated loess. Results show that two different modes of oil contamination

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27

Liu, Xin, Ke Sheng, Zhi-long Li, Liang-qin Gan, Hao Shan, and Bao-ning Hong. "Experimental Research on Foamed Mixture Lightweight Soil Mixed with Fly-Ash and Quicklime as Backfill Material behind Abutments of Expressway Bridge." Advances in Materials Science and Engineering 2017 (2017): 1–11. http://dx.doi.org/10.1155/2017/5767103.

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To promote the utilization of fly-ash, based on the orthogonal experiment method, wet density and unconfined compressive strength of Foamed Mixture Lightweight Soil mixed with fly-ash and quicklime (FMLSF) are studied. It is shown that the wet density and unconfined compressive strength of FMLSF increase with the increase of cement content, while decreasing with the increase of foam content. With the mixing content of fly-ash increase, the wet density and unconfined compressive strength of FMLSF increase firstly and then decrease. Scanning Electron Microscope (SEM) tests show that ball effect

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28

Nie, Jun, Kai Zhang, Xiangyang Fan, et al. "Study on the Mechanical Properties of Modified Sludge Soil Based on an SM-C Modifier." Materials 18, no. 3 (2025): 483. https://doi.org/10.3390/ma18030483.

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The purpose of this study is to solve the problem of the harmless treatment of dredged silt and soil extraction during road construction in lake areas. The silt in the project area is used as the research material to evaluate its engineering applicability as an improved filling material for the roadbed of the lake’s surrounding road. Through indoor pretreatment and a series of mechanical performance tests, including compaction tests, unconfined compressive strength tests (UCS), bearing ratio tests (CBR), triaxial compression tests (CU consolidated undrained), and consolidation tests, we obtain

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29

Li, Qin, and Ke Wei Sun. "Research on Environment-Friendly Soil Stabilizer Solidifying Buildings Residues for Paving Materials." Advanced Materials Research 335-336 (September 2011): 1155–58. http://dx.doi.org/10.4028/www.scientific.net/amr.335-336.1155.

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Two groups of buildings residues was studied in the paper as to unconfined compressive strength, soaked unconfined compressive strength, shrinkage values, porosity. It is show that Q2 soil stabilizer can improve the micro-structure of solidified blocks of buildings sediment for dispersed sphere-shaped particles can be generated by Q2 soil stabilizer mixed with buildings residues and cement. As a result, the solidified block of buildings sediments was improved in the properties in its increased unconfined compressive strength, decreased shrinkage values and higher durability.

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30

Gao, Song, Hui Min Zhao, Jing Cao, and Zhi Gang Song. "Strength Test Research on Cement-Soil of Peat Soil in Kunming." Applied Mechanics and Materials 730 (January 2015): 15–20. http://dx.doi.org/10.4028/www.scientific.net/amm.730.15.

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Based on the engineering properties of the peat soil in Kunming, through indoor unconfined compressive strength test in this article, and changing the different cement mixing ratio including 12%, 15%, 18%, 21%, 24% and 27% and age including 3 d, 7 d, 14 d, 28 d, 60 d and 90 d, and we focus on the influence on unconfined compressive strength of cement-soil by both of them. Through the study of the regression analysis of test results, we obtain the basic strength characteristics of cement-soil of peat soil which is that cement-soil unconfined compressive strength increases with group of the ceme

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31

Ye, Zhiwei. "Enzyme-induced Carbonate Precipitation (EICP) Combined with Lignin to Improve the Unconfined Compression Strength (USC) of Shanghai Clay." Scientific Journal of Technology 6, no. 5 (2024): 54–59. http://dx.doi.org/10.54691/b6ga9r13.

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In order to improve the mechanical properties of high moisture content and low strength of clay particles in Shanghai, the effects of different lignin content on the unconfined compressive strength of EICP-lignin-cured clay were studied by using the method of lignin combined with EICP technology to strengthen the clay by lignin combined with EICP technology. The experimental results showed that EICP-lignin could enhance the unconfined compressive strength of Shanghai clay. With the increase of lignin content, the unconfined compressive strength of clay first increased and then decreased, and t

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32

Ye, Hao, Chengfu Chu, Long Xu, Kunlong Guo, and Dong Li. "Experimental Studies on Drying-Wetting Cycle Characteristics of Expansive Soils Improved by Industrial Wastes." Advances in Civil Engineering 2018 (September 24, 2018): 1–9. http://dx.doi.org/10.1155/2018/2321361.

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The improved engineering properties of the expansive soil by mixing with various additives will be changed during the long-term variation of the meteorological and hydrological conditions. In the present work, a series of tests are performed to investigate the evolution of the unconfined compression strength and the Atterberg limits under drying-wetting cycling conditions for specimens treated by iron tailing sands and calcium carbide slag. Typical results of the unconfined compressive strength can be divided into three stages. The unconfined compressive strength increases initially and then d

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33

Hartanto, Daniel, and A. Seputra Sudianto. "Applying Multiwall Carbon Nanotube for Increasing Soil Bearing Capacity." Modern Environmental Science and Engineering 8, no. 5 (2022): 263–66. http://dx.doi.org/10.15341/mese(2333-2581)/05.08.2022/002.

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Nanotechnology is an alternative in soil improvement methods. The size of the nanoparticles is very small, ranging from 1 to 100 nm. Multiwall Nanotube is one of the nano materials in increasing the bearing capacity of the soil. According to Arabania et al. (2012), the strength of clayey sand increased by 120% by adding 3% Multiwall Carbon Nanotube. Meanwhile, according to Taha (2012), the recommended addition of Multiwall Nanotube Carbon is 0.1-0.5%. This research uses Unconfined Compression Test to determine the unconfined compressive strength (qu) and undrained shear strength (cu) of the la

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34

Duan, Xue-lei, and Jing-shuang Zhang. "Mechanical Properties, Failure Mode, and Microstructure of Soil-Cement Modified with Fly Ash and Polypropylene Fiber." Advances in Materials Science and Engineering 2019 (May 6, 2019): 1–13. http://dx.doi.org/10.1155/2019/9561794.

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In order to investigate the effects of fly ash and polypropylene fiber on mechanical properties, failure mode, and microstructure of soil-cement, the unconfined compression test, splitting tension test, and scanning electron microscopy (SEM) test of soil-cement with different polypropylene fiber contents (0%, 0.1%, 0.2%, 0.3%, 0.4%, and 0.5% by weight of dry soil) and fly ash contents (0%, 4%, 8%, and 12% by weight of dry soil) were carried out. The compressive and tensile strengths, deformation characteristics, failure mode, and microstructure of soil-cement modified with fly ash and polyprop

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35

Ghorbani, Ali, Maysam Salimzadehshooiili, Jurgis Medzvieckas, and Romualdas Kliukas. "Strength Characteristics of Cement-Rice Husk Ash Stabilised Sand-Clay Mixture Reinforced with Polypropylene Fibers." Baltic Journal of Road and Bridge Engineering 13, no. 4 (2018): 447–74. http://dx.doi.org/10.7250/bjrbe.2018-13.428.

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In this paper, stress-strain behaviour of sand-clay mixture stabilised with different cement and rice husk ash percentages, and reinforced with different polypropylene fibre lengths are evaluated. Mixtures are widely used in road construction for soil stabilisation. It is observed that replacing half of the cement percentage (in high cement contents) with rice husk ash will result in a higher unconfined compressive strength. In addition, the presence of 6 mm polypropylene fibres will help to increase the unconfined compressive strength of stabilised samples, while larger fibres cause reverse b

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Li, Qin. "Research on the Effect of Microstructure Related to Macro-Mechanical Properties of Solidified Mass Made of Building Residues with SEM." Advanced Materials Research 317-319 (August 2011): 78–82. http://dx.doi.org/10.4028/www.scientific.net/amr.317-319.78.

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Different contents of building residues and whether soil stabilizer is added or not can affect the microstructure of the solidified mass, and thus lead to the change of unconfined compressive strength. The stu dy process is described in the paper. The result shows that the more soil is contained in the building residues, the lower porosity and higher unconfined compressive strength of the solidified mass will be. The acicular ettr ingite can be formed by adding soil stabilizer to make the pores smaller and evener, and thus improve their fra ctal dimensions and unconfined compressive strength.

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Guan, DaShu, JiaXi Zheng, WenHao Huang, et al. "The influence of soft clay saturation characteristics on unconfined compressive strength in Guangdong-Hong Kong-Macao Greater Bay Area." E3S Web of Conferences 293 (2021): 02011. http://dx.doi.org/10.1051/e3sconf/202129302011.

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In order to study the influence of saturated characteristics of soft clay on unconfined compressive strength, the soft clay of Guangdong-Hong Kong-Macao Bay Area is taken as the research object, comparing and contrasting on unconfined compression test of saturated clay and unsaturated clay in laboratory, studying the variation law of unconfined compressive strength and sensitivity of unsaturated and saturated soft clay. The test results show that: 1. During the failure of unsaturated soft clay samples, oblique fractures appear, showing brittle shear failure, while the saturated clay samples ap

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Ateş, Ali. "The Effect of Polymer-Cement Stabilization on the Unconfined Compressive Strength of Liquefiable Soils." International Journal of Polymer Science 2013 (2013): 1–8. http://dx.doi.org/10.1155/2013/356214.

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Soil stabilization has been widely used as an alternative to substitute the lack of suitable material on site. The use of nontraditional chemical stabilizers in soil improvement is growing daily. In this study a laboratory experiment was conducted to evaluate the effects of waterborne polymer on unconfined compression strength and to study the effect of cement grout on pre-venting of liquefiable sandy soils. The laboratory tests were performed including grain size of sandy soil, unit weight, ultrasonic pulse velocity, and unconfined compressive strength test. The sand and various amounts of po

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Zhang, Xin, Xin Ping Zhang, Hong Tao Peng, Qiang Xia, and Jun Wang. "Relation of Microstructure and Unconfined Compression Strength of Soil Stabilized with TerraZyme." Advanced Materials Research 664 (February 2013): 760–63. http://dx.doi.org/10.4028/www.scientific.net/amr.664.760.

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TerraZyme as an enzymatic soil stabilizer was used in this research. The stabilized soil was mixed with TerraZyme in proper proportion to determine the relationship of unconfined compression strength and microstructure caused by the introduction of TerraZyme. The experimental results show that the unconfined compressive strength of stabilized soil with TerraZyme added is higher than that without TerraZyme. The micrographs of scanning election microscopy (SEM) indicate that the microstructure of the stabilized soil sample with TerraZyme added is denser than that without TerraZyme. This is becau

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Que, Yun, Yi Qian Lin, and Fang Ze Gong. "Experimental Study on the Performance of Compound Improved HLLS (High Liquid Limit Soil) with Various Curing Agents." Key Engineering Materials 753 (August 2017): 300–304. http://dx.doi.org/10.4028/www.scientific.net/kem.753.300.

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The HLLS (high liquid limit soil) has the characteristics of high moisture content, low bearing capacity and poor water stability. Most of the existing treatment methods focus on the improvement with a single curing agent, and the research on the improvement of HLLS with various curing agents is still insufficient. This paper presents the characteristics of two kinds of compound improved HLLS based on unconfined compressive strength test. The results show that the unconfined compressive strength of CSIS (Cement / SAP Improved Soil) and CLIS (Cement / Renolith Improved Soil) are greatly improve

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Li, Hongbo, Hubiao Zhang, Pengfei Yan, Changyu Yan, and Yufei Tong. "Mechanical Properties of Furnace Slag and Coal Gangue Mixtures Stabilized by Cement and Fly Ash." Materials 14, no. 22 (2021): 7103. http://dx.doi.org/10.3390/ma14227103.

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The mechanical properties and strength formation mechanism of cement–fly-ash-stabilized slag–coal gangue mixture were examined using an unconfined compressive strength test, splitting strength test, triaxial test, and scanning electron microscopy to solve the limitations of land occupation and environmental pollution that is caused by fly ash from the Xixia District thermal power plant in Yinchuan, slag from the Ningdong slag yard, and washed coal gangue. Its performance as a pavement base mixture on the road was investigated. The results demonstrated that as the slag replacement rate increase

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Dai, Guo Liang, Abdellatif Boucheloukh, and Wei Ming Gong. "Review of Design Methods of the Ultimate Side Shear and Base Resistance for Rock-Socketed Pile." Applied Mechanics and Materials 353-356 (August 2013): 60–67. http://dx.doi.org/10.4028/www.scientific.net/amm.353-356.60.

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To determine the ultimate load capacity of drilled shaft socketed into rock under axial compression loading, it is necessary to predict both the ultimate side shear resistance and the base resistance based on field load test or/ and laboratory tests. In geotechnical engineering there are several methods proposed the relationship between rock properties (the unconfined compressive strength) and the ultimate side shears resistance and base resistance. This paper presents the review of design methods of ultimate side shear and base resistance for rock-socketed pile. These empirical functions depe

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Zhang, Shibin, Rongjian Li, Weishi Bai, and Qiang Yang. "Effects of Oil Contamination on the Physical-Mechanical Behavior of Loess and Its Mechanism Analysis." Geofluids 2021 (December 7, 2021): 1–12. http://dx.doi.org/10.1155/2021/3691549.

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Oil leakage will not only pollute the soil but also change its physical-mechanical behavior, and loess has complex properties in the environment of oil presence. Artificial loess contaminated by diesel oil is collected as the research object. The physical and mechanical properties of clean loess and contaminated loess, including liquid and plastic limits, permeability, compression properties, and compressive strength characteristics, are estimated through a series of laboratory tests under different oil contents, water contents, and dry densities. Results show that liquid limits, plastic limit

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Zhuang, Xin Shan, Can Zhao, and Xu Min Wang. "Experimental Research on Unconfined Compressive Strength of Artificially Cemented Sand." Advanced Materials Research 689 (May 2013): 324–28. http://dx.doi.org/10.4028/www.scientific.net/amr.689.324.

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Unconfined compressive strength tests and calcium carbonate (CaCO3) quantitative chemical tests are conducted on artificially cemented sand which have different cement ratio (Cv) and curing time (t). Through the analysis of experimental results, the unconfined compressive strength (qu) of cemented sand are affected by curing time (t), cement ratio (Cv) and void ratio (η). Test results show that the longer the curing time (t), the lower the void/cement ratio (η/Cv) and the higher calcium carbonate/calcium hydroxide content ratio (CaCO3/Ca(OH)2 ratio or mC/mH), the higher the unconfined compress

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Wang, Qiang, and Jinyang Cui. "Study on Strength Characteristics of Solidified Contaminated Soil under Freeze-Thaw Cycle Conditions." Advances in Civil Engineering 2018 (September 10, 2018): 1–5. http://dx.doi.org/10.1155/2018/8654368.

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Cement solidification/stabilization is a commonly used method for the remediation of contaminated soils. The stability characteristics of solidified/stabilized contaminated soils under freeze-thaw cycle are very important. A series of tests, which include unconfined compressive strength tests, freeze-thaw cycle tests, and scanning electron microscopy (SEM) tests, are performed to study the variation law of strength characteristics and microstructure. It aims at revealing the microcosmic mechanism of solidified/stabilized Pb2+ contaminated soils with cement under freeze-thaw cycle. The results

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Uchaipichat, Anuchit. "Experimental Study on Unconfined Compressive Strength of Natural Rubber Modified Soil Cement." Materials Science Forum 1074 (November 8, 2022): 143–47. http://dx.doi.org/10.4028/p-885f8s.

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This paper presents the test results of experimental study on unconfined compressive strength of natural rubber modified soil cement. In this study, the cement content, defined as ratio of dry cement weight to dry soil weight, ranged from 4 to 12 percent and the rubber-cement ratio, defined as ratio of natural liquid latex rubber weight to dry cement weight, ranged from 0 to 0.08. It can be observed that the unconfined compressive strength increased with increasing value of rubber-cement ratio for the specimens with cement content of 4 and 8 percent. However, a decrease in unconfined compressi

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Wang, Xiao Yan, Jing Rong Pei, and Lin Wang. "Research on the Cement Stable Powder and Mixed with Crushed Stone." Advanced Materials Research 723 (August 2013): 488–93. http://dx.doi.org/10.4028/www.scientific.net/amr.723.488.

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This paper has studied the different dosage of cement mixed with different proportions of gravel. Through the compaction and unconfined compressive strength test and economic analysis, and finally determined that the gravel mixed with content is 30% and the cement dosage is 3%. The study also shows that by adding a certain amount of gravel instead of powder is feasible. The same cement doses adding macadam mixture, unconfined compressive strength is higher than stable powder. The study has solved the shortage of raw materials of construction, saving a lot of money, and has important engineerin

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Kurt Albayrak, Zeynep Nese, and Mehmet Akif Isik. "Effects of Liquid Polymers on the Strength and Freezing-Thawing Properties of Bentonite and Kaolin Clays: A Comparative Study for Cold Climates." Baltic Journal of Road and Bridge Engineering 18, no. 2 (2023): 32–49. http://dx.doi.org/10.7250/bjrbe.2023-18.597.

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Clay soils can exhibit swelling and settlement behaviour when interacted with water. The clays located in road infrastructure can damage the road pavement and cause cracks because of swelling and/or settlement of clays. The freezing-thawing processes of clay soils can increase the damages of pavement. Additionally, the strength losses can occur. Weak soils can be improved using various soil improvement techniques with or without additives. In this study, liquid polymers (polyurethane, epoxy resin, and styrene acrylic) were combined with clays in various amounts (5 wt.%, 10 wt.%, 15 wt.%, and 2

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Das, B. M., S. C. Yen, and R. N. Dass. "Brazilian tensile strength test of lightly cemented sand." Canadian Geotechnical Journal 32, no. 1 (1995): 166–71. http://dx.doi.org/10.1139/t95-013.

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Tensile stress – tensile strain relationships for lightly cemented sand specimens obtained by conducting Brazilian tensile strength tests have been presented. The tensile strain measurement was done by using an optical image analysis technique. In addition to the tensile strength tests, some unconfined compression tests on sand specimens with varying cement contents were also performed. Based on the results of the above tests, a nondimensional tensile stress – tensile strain relationship has been presented. Also the variation of the tensile and compressive strength and strain ratios with varyi

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Hu, Jianlin, Tianyi Zhao, Jilong Jia, et al. "Impact of Nano-SiO2 on the Compressive Strength of Geopolymer-Solidified Expansive Soil." Buildings 14, no. 10 (2024): 3123. http://dx.doi.org/10.3390/buildings14103123.

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Expansive soil is widely distributed and often needs to be improved for engineering and construction needs. Using blast furnace slag and fly ash as precursors and NaOH as an alkali activator, a geopolymer was prepared to solidify expansive soil, and the effect of nano-SiO2 on the compressive strength and water stability of the geopolymer-solidified expansive soil was further studied. The effects of alkali addition ratio, nano-SiO2 addition ratio, and curing agent addition ratio on the unconfined compressive strength and water stability of the cured soil were studied through unconfined compress

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