›› 2006, Vol. 27 ›› Issue (12): 2137-2142.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Research on meso-structure of lightweight sand-EPS beads soil (LSES) using CT

WANG Shu-mao, GAO Yu-feng   

  1. Research Institute of Geotechnical Engineering, Hohai University, Nanjing 210098, China
  • Received:2005-03-07 Online:2006-12-11 Published:2013-12-09

PDF (PC)

1241

Abstract: A qualitative and quantitative research is conducted on the meso-structure of a novel geo-material—lightweight sand-EPS beads soil (LSES) by a medical CT machine. CT images, average CT value(ME) and SDs for different scanning sections are analyzed under various cement contents(CC) and EPS-bead contents(Ve /Vs). With increasing CC, MEs increase, the structure of LSES become denser, hence the initial damages decrease. whereas when Ve /Vs increases, C-S-H has lower efficiency to coat EPS beads and infill the voids between particles; and Ve /Vs is linear to the MEs in this test. Additionally, due to different SD distribution for sections, LSES is defined as a special structural soil with highly different local void ratio distributions; and CC and Ve /Vs are the major factors influencing its structure.

Key words: lightweight sand-EPS beads soil (LSES), computerized tomography (CT), structure

CLC Number: 

  • TU 411.92
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
[1] LU Jun-long, ZHANG Yin, . Experimental study of the seismic response of the assembled multi-ribbed wall structure-subsoil system in frequency domain [J]. Rock and Soil Mechanics, 2019, 40(6): 2163-2171.
[2] YIN Xiao-meng, YAN E-chuan, WANG Lu-nan, WANG Yan-chao, . Effect of water and microstructure on wave velocity anisotropy of schist and its mechanism [J]. Rock and Soil Mechanics, 2019, 40(6): 2221-2230.
[3] WANG Shi-quan, WEI Ming-li, HE Xing-xing, ZHANG Ting-ting, XUE Qiang, . Study of water transfer mechanism during sediment solidification process based on nuclear magnetic resonance technology [J]. Rock and Soil Mechanics, 2019, 40(5): 1778-1786.
[4] SHAO Sheng-jun, CHEN Fei, DENG Guo-hua, . Seismic passive earth pressure against the retaining wall of structural loess based on plane strain unified strength formula [J]. Rock and Soil Mechanics, 2019, 40(4): 1255-1262.
[5] ZHUANG Hai-yang, FU Ji-sai, CHEN Su, CHEN Guo-xing, WANG Xue-jian, . Liquefaction and deformation of the soil foundation around a subway underground structure with a slight inclined ground surface by the shaking table test [J]. Rock and Soil Mechanics, 2019, 40(4): 1263-1272.
[6] 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.
[7] JIANG Qiang-qiang, LIU Lu-lu, JIAO Yu-yong, WANG Hao, . Strength properties and microstructure characteristics of slip zone soil subjected to wetting-drying cycles [J]. Rock and Soil Mechanics, 2019, 40(3): 1005-1012.
[8] TANG De-qi, YU Feng, CHEN Yi-tian, LIU Nian-wu, . Model excavation tests on double layered retaining structure composed of existing and supplementary soldier piles [J]. Rock and Soil Mechanics, 2019, 40(3): 1039-1048.
[9] WANG Deng-ke, SUN Liu-tao, WEI Jian-ping, . Microstructure evolution and fracturing mechanism of coal under thermal shock [J]. Rock and Soil Mechanics, 2019, 40(2): 529-538.
[10] CUI Qi, HOU Jian-guo, SONG Yi-le. Analyses of restraint of surrounding rock and structural vibration characteristics of underground powerhouse for pumped storage power station [J]. Rock and Soil Mechanics, 2019, 40(2): 809-817.
[11] DENG Hua-feng, WANG Chen-xi-jie, LI Jian-lin, ZHANG Yin-chai, WANG Wei, ZHANG Heng-bin. Influence mechanism of loading rate on tensile strength of sandstone [J]. , 2018, 39(S1): 79-88.
[12] SUN Ming-she, MA Tao, SHEN Zhi-jun, WU Xu, WANG Meng-shu，. Study of lining sharing surrounding rock pressure in composite lining structure [J]. , 2018, 39(S1): 437-445.
[13] FU Zi-guo, QIAO Deng-pan, GUO Zhong-lin, LI Ke-gang, XIE Jin-cheng, WANG Jia-xin. A model for calculating strength of ultra-fine tailings cemented hydraulic fill and its application [J]. , 2018, 39(9): 3147-3156.
[14] WANG Li-qin, SHAO Sheng-jun, ZHAO Cong, LU Zhong-gang,. Effect of initial structural property of loess on its compressive yield [J]. , 2018, 39(9): 3223-3228.
[15] ZHOU Yong, ZHU Ya-wei,. Interaction between pile-anchor supporting structure and soil in deep excavation [J]. , 2018, 39(9): 3246-3252.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] WEI Li，CHAI Shou-xi，CAI Hong-zhou，WANG Xiao-yan，LI Min3，SHI Qian. Research on tensility of wheat straw for reinforced material[J]. , 2010, 31(1): 128 -132 .
[2] HUANG Qing-xiang, ZHANG Pei, DONG Ai-ju. Mathematical model of “arch beam” of thick sandy soil layer movement in shallow seam[J]. , 2009, 30(9): 2722 -2726 .
[3] SUN De-an，CHEN Bo. Mechanical behavior of remolded overconsolidated Shanghai soft clay and its elastoplastic simulation[J]. , 2010, 31(6): 1739 -1743 .
[4] JING Zhi-dong, LIU Jun-xin. Experimental research on dynamic deformations of semi-rigid structures of subgrade bed-mudstone of red beds[J]. , 2010, 31(7): 2116 -2121 .
[5] LEI Jin-bo，CHEN Cong-xin. Research on load transfer mechanism of composite foundation of rigid pile with cap based on hyperbolic model[J]. , 2010, 31(11): 3385 -3391 .
[6] WANG Deng-ke，LIU Jian，YIN Guang-zhi，WEI Li-de. Research on influencing factors of permeability change for outburst-prone coal[J]. , 2010, 31(11): 3469 -3474 .
[7] ZHANG Cheng-ping，ZHANG Ding-li，LUO Jian-jun，WANG Meng-shu，WU Jie-pu. Remote monitoring system applied to the construction of metro station undercrossing existing metro tunnel[J]. , 2009, 30(6): 1861 -1866 .
[8] WANG Jun, CAO Ping, LI Jiang-teng, LIU Ye-ke. Analysis of stability of tunnel-slope with rheological medium under rainfall infiltration[J]. , 2009, 30(7): 2158 -2162 .
[9] ZHANG Yuan, WAN Zhi-jun, KANG Jian-rong, ZHAO Yang-sheng. Analysis of stage characteristics of sandstone permeability under conditions of temperature and triaxial stress[J]. , 2011, 32(3): 677 -683 .
[10] ZHANG Xue-chan , GONG Xiao-nan , YIN Xu-yuan , ZHAO Yu-bo. Monitoring analysis of retaining structures for Jiangnan foundation pit of Qingchun road river-crossing tunnel in Hangzhou[J]. , 2011, 32(S1): 488 -0494 .
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