Evolution of Meso-Structure of Intact Loess during Loading

Abstract:

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A series of triaxial shear tests on unsaturated intact loess were conducted using CT-multi-function triaxial apparatus. The distinct CT images and relevant CT data were obtained nondestructively during triaxial shear. CT data was used to define a structure parameter and an evolution variable which characterized the evolution of meso-structure. An equation is proposed to describe the evolution of meso-structure of unsaturated intact loess during loading, which reflects the influences of net cell pressure and suction on the evolution of meso-structure.

Info:

Periodical:

Advanced Materials Research (Volumes 243-249)

Edited by:

Chaohe Chen, Yong Huang and Guangfan Li

Pages:

2460-2463

DOI:

10.4028/www.scientific.net/AMR.243-249.2460

Citation:

C. N. Shen et al., "Evolution of Meso-Structure of Intact Loess during Loading", Advanced Materials Research, Vols. 243-249, pp. 2460-2463, 2011

Online since:

May 2011

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Price:

$35.00

[1] Desrues J, Chambon R, Mokni M, et al. (1996) Void ratio evolution inside shear bands in triaxial sand specimens studied by computed tomgraphy. Geotechnique 46(3): 529-546.

DOI: 10.1680/geot.1996.46.3.529

[2] Finno R J, Harris W W, Mooney M A, et al. (1997) Shear bands in plane strain compression of loose sand. Geotechnique 47(1): 149-165.

DOI: 10.1680/geot.1997.47.1.149

[3] Otani J, Mukunoki T, Obara Y (2000) Application of X-ray CT method for characterization of failure in soil. Soils and Foundations 40(2): 111-1l8.

DOI: 10.3208/sandf.40.2_111

[4] CHEN Z.H., LU Z.H., PU Y.B. (2001) The matching of computerized tomography with triaxial test apparatus for unsaturated soil. Chinese Journal of Geotechnical Engineering 23(4): 387-392.

[5] CHEN Z.H., SUN S.G., FANG X.W., et al. (2007) Development and application of multi-function triaxial apparatus for soil. Journal of Logistical Engineering University 23(4): 1-5.

[6] FANG X.W. (2008) Study on microstructure, meso-structure and mechanics properties of Q2 loess. Doctor's Thesis of Logistical Engineering University, Chongqing, China.

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