RESEARCH ARTICLE


Tri-axial Shear Test of Different Damage Remolded Expansive Soil



Liu Yongsheng*, 1, Wang Shiji2, Dong Xinyu1
1 School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang 330013, China
2 College of Engineering and Technology, Southwest University, Chongqing 400716, China


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Creative Commons License
© 2015 Yongsheng et al;

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang, Jiangxi, China 330013; Tel: 85-971-87046707; Fax: 85-971-87046720; E-mail: yshliu07@126.com


Abstract

The deformation and strength characteristics of damaged remolded expansive soil are studied by the tri-axial tests of different bore diameter damaged expansive soil. The results show that the area and location of cylindrical bores have significant effect on the mechanical and deformation characteristics of the soil. Little damage can improve the shear bearing capacity of the specimen; but when the damage is large, the bearing capacity of the specimen is weakened with the increasing damage. Under the same shearing conditions, partial strain is less than 7%; the specimens with same damage area and different damage locations have the same force form; while if the partial strain exceeds by 7% in the same damage area, the bores are closer to the center of the specimen and the shear strength is smaller.

Keywords: Damage area, damage locations, expansive soil, tri-axial shear test, remolded expansive soil.