›› 2009, Vol. 30 ›› Issue (11): 3302-3306.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Experimental research of matric suction with water content and dry density of unsaturated laterite

LIU Xiao-wen1，CHANG Li-jun1, 2，HU Xiao-rong1   

  1. 1. School of Architectural Engineering, Nanchang University, Nanchang 330031, China; 2. Department of Architectural Engineering,Qinghai University, Xining 810016, China
  • Received:2009-03-30 Online:2009-11-10 Published:2010-01-07

PDF (Chinese)

3804

Abstract:

The matric suction has very important influence on the characteristics of unsaturated soil; and it is closely relevant to water content. In order to discuss the relationship among the matric suction, water content and dry density, the matric suction is measured with filter paper method in laboratory. The soil-water characteristics curves （SWCC）for unsaturated laterite with different dry densities are obtained. The equations fitting the SWCC are presented for different dry densities of laterite. The test results show that the matric suction decreases with increasing water content under the same dry density; and the law is more obvious when water content is less than 24 %. The analysis of the parameter of unsaturated laterite shows that the strength of laterite does not increase obviously with the increasing matric suction under the unsaturated condition. The matric suction is not sensitive to density changes for a high water content laterite , and that is contrary for low water content.

Key words: unsaturated laterite, matric suction, water content, dry density

CLC Number: 

  • TU 411
[1] LI Xiao-xuan, LI Tao, PENG Li-yun, . Elastoplastic two-surface model for unsaturated cohesive soils under cyclic loading with controlled matric suction [J]. Rock and Soil Mechanics, 2020, 41(2): 552-560.
[2] WU Er-lu, ZHU Jun-gao, GUO Wan-li, LU Yang-yang, . Experimental study of compaction characteristics of coarse-grained soil based on gradation equation [J]. Rock and Soil Mechanics, 2020, 41(1): 214-220.
[3] WANG Huan, CHEN Qun, WANG Hong-xin, ZHANG Wen-ju, . Triaxial tests on fly ash with different compaction and matric suction [J]. Rock and Soil Mechanics, 2019, 40(S1): 224-230.
[4] ZHENG Yao-lin, ZHANG Rong-jun, ZHENG Jun-jie, DONG Chao-qiang, LU Zhan, . Experimental study of flocculation-solidification combined treatment of hydraulically dredged mud at extra high-water content [J]. Rock and Soil Mechanics, 2019, 40(8): 3107-3114.
[5] YAN Ya-jing, YAN Yong-shuai, ZHAO Gui-zhang, ZHANG Tai-li, SUN Qiang, . Study on moisture migration in natural slope using high-density electrical resistivity tomography method [J]. Rock and Soil Mechanics, 2019, 40(7): 2807-2814.
[6] WANG Peng-fei, TAN Wen-hui, MA Xue-wen, LI Zi-jian, LIU Jing-jun, WU Yang-fan, . Relationship between strength parameter and water content of fault gouge with different degrees of consolidation [J]. Rock and Soil Mechanics, 2019, 40(5): 1657-1662.
[7] WANG Juan-juan, HAO Yan-zhou, WANG Tie-hang. Experimental study of structural characteristics of unsaturated compacted loess [J]. Rock and Soil Mechanics, 2019, 40(4): 1351-1357.
[8] JIN Xiao, YANG Wen, MENG Xian-Hong, LEI Le-Le, . Deduction and application of unfrozen water content in soil based on electrical double-layer theory [J]. Rock and Soil Mechanics, 2019, 40(4): 1449-1456.
[9] BAO Xiao-hua, LIAO Zhi-guang, XU Chang-jie, PANG Xiao-chao, XIE Xiong-yao, CUI Hong-zhi, . Model test study of the failure of silty sand slope under different seepage boundary conditions [J]. Rock and Soil Mechanics, 2019, 40(10): 3789-3796.
[10] YI Jin-xiang, LI Lei, WANG Pei, YANG Guang，. Compaction characteristics of sewage sludge-municipal solid waste mixed landfill [J]. , 2018, 39(S1): 453-460.
[11] TAO Gao-liang, LI Jin, ZHUANG Xin-shan, XIAO Heng-lin, CUI Xi-lin, XU Wei-sheng. Determination of the residual water content of SWCC based on the soil moisture evaporation properties and micro pore characteristics [J]. , 2018, 39(4): 1256-1262.
[12] TAO Gao-liang, BAI Liang, YUAN Bo, GAN Shi-chao. Study of relationship between soil-water characteristic curve and NMR curve [J]. , 2018, 39(3): 943-948.
[13] WU Meng-tao, LIU Fang-cheng, CHEN Ju-long, CHEN Lu. Influence of water content on dynamic shear modulus and damping ratio of rubber-sand mixture under large strains [J]. , 2018, 39(3): 803-814.
[14] CAO Ya-peng, WEN Tao, MI Hai-zhen, ZHOU Feng-xi, YANG Peng，. Salt expansion properties of sulfate saline soils under one time decrease of water content [J]. , 2018, 39(3): 881-888.
[15] CHEN Zi-quan, HE Chuan, WU Di, GAN Lin-wei, XU Guo-wen, YANG Wen-bo. Mechanical properties and energy damage evolution mechanism of deep-buried carbonaceous phyllite [J]. , 2018, 39(2): 445-456.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] WANG Chuan-ying, HU Pei-liang, SUN Wei-chun. Method for evaluating rock mass integrity based on borehole camera technology[J]. , 2010, 31(4): 1326 -1330 .
[2] TAN Yun-zhi, KONG Ling-wei, GUO Ai-guo, WAN Zhi. Capillary effect of moisture transfer and its numerical simulation of compacted laterite soil[J]. , 2010, 31(7): 2289 -2294 .
[3] WANG Yun-gang, XIONG Kai, LING Dao-sheng. Upper bound limit analysis of slope stability based on translational and rotational failure mechanism[J]. , 2010, 31(8): 2619 -2624 .
[4] LONG Zhao，ZHAO Ming-hua，ZHANG En-xiang，LIU Jun-long. A simplified method for calculating critical anchorage length of bolt[J]. , 2010, 31(9): 2991 -2994 .
[5] SHI Dan-da, ZHOU Jian, JIA Min-cai, YANG Yong-xiang. Back analysis of parameters and long-term settlement prediction of harbor soft ground considering its creep behavior[J]. , 2009, 30(3): 746 -750 .
[6] DENG Zong-wei, LENG Wu-ming, LI Zhi-yong, YUE Zhi-ping. Finite element analysis of time effect for coupled problem of temperature and stress fields in slope supported by shotcrete[J]. , 2009, 30(4): 1153 -1158 .
[7] LI Jian ，TAN Zhong-sheng ，YU Yu ，NI Lu-su. Research on construction procedure for shallow large-span tunnel undercrossing highway[J]. , 2011, 32(9): 2803 -2809 .
[8] LI Nan , XU Hui , HU Bin. Shear creep characteristics of sandstone under dry and saturated states[J]. , 2012, 33(2): 439 -443 .
[9] LIU Zhen-ping，HE Huai-jian，BAI Shi-wei，ZHANG Hua，ZOU Dan，LI Huo-bing. Field test and numerical simulation of pile-slab foundation of 500 kV transmission line tower in silt[J]. , 2012, 33(4): 1031 -1039 .
[10] DING Zhou-xiang，QIU Yu-liang，LI Tao. Spatial asymmetry of excess pore pressure during nonlinear consolidation with two-way drainage[J]. , 2012, 33(6): 1829 -1838 .
Copyright © Rock and Soil Mechanics, All Rights Reserved.
Tel: 027-87198484, 87199252, 87199253, 87198752　E-mail: ytlx@whrsm.ac.cn
Powered by Beijing Magtech Co. Ltd