CT Investigation of Fracture Mechanism of Soil-Rock Mixtures

Article Preview

Abstract:

Soil-Rock Mixture (SRM) is a unique type of geological material characterized by inhomogeneous composition and complicated structures. This paper investigated the fracture mechanisms that govern the strength and deformation of SRM subjected to uniaxial compression loads by means of computed tomography (CT) techniques. The self-designed loading devices and self-developed image processing program were applied to identify and quantify the fractures inside SRM during compressions. The results show that the internal fracture behavior of SRM greatly depends on the rock ratios of SRM.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

67-71

Citation:

Online since:

October 2012

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2012 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] X. Li, Q. L. Liao and J. M. He. In-situ tests and a stochastic structural model of rock and soil aggregate in the Three Gorges reservoir area, China. Int J Rock Mech Min Sci, 2004, 41(3):313-318.

DOI: 10.1016/j.ijrmms.2003.12.030

Google Scholar

[2] Q. L, Liao, X. Li, Z. Hao, S. J. Wang, M. S. Wu and J. M. He: Current status and future trends of studies on rock and soil aggregates (RSA). J Eng Geol, 2006, 14 (6): 800-808 (in Chinese).

Google Scholar

[3] G. B. Crosta. Failure and flow development of a complex slide: the 1993 Sesa landslide. Eng Geol, 2001, 59(5): 173-199.

DOI: 10.1016/s0013-7952(00)00073-9

Google Scholar

[4] Y. H. Zhang, H. X. Li, Q. Sheng, K. Wu, Z. Y. Li and Z. P. Yue. Study of highway landslide monitoring and early warning based on surface displacements. Rock Soil Mech, 2010, 31(11): 3671-7 (in Chinese).

Google Scholar

[5] W. J. Xu and R. L. Hu: Field horizontal push sheer test for mechanical property of soil-rock mixtures under cyclic loading. J Eng Geol, 2008, 16(1): 63-7 (in Chinese).

Google Scholar

[6] Z. Zhou, H. L. Fu, B. C. Liu, H. H. Tan, W. X. Long and Q. Luo. Experimental study of the permeability of soil-rock mixture. J Hunan Univ, 2006, 33(6): 25-4 (in Chinese).

Google Scholar

[7] W. J. Xu, Z. Q. Yue and R. L. Hu. Study on the mesostructure and mesomechanical characteristics of the soil-rock mixture using digital image processing based finite element method. Int J Rock Mech Min Sci, 2008, 45(5): 749-762.

DOI: 10.1016/j.ijrmms.2007.09.003

Google Scholar

[8] W. J. Xu, R. L. Hu and Z. Q. Yue. Development of random mesostructure generating system of soil-rock mixture and study of its mesostructural mechanics based on numerical test. Chinese J Rock Mech Eng, 2009, 28(8): 1652-14 (in Chinese).

Google Scholar

[9] Q. L, Liao, X. Li and S. D. Li. Sample remodeling, compactness characteristic and mechanical behavior of rock-soil mixtures. J Eng Geol, 2010, 18(3): 385-7 (in Chinese).

Google Scholar