Mechanical properties of clay under large shear displacement conditions

Author

Hong, Yong ; Wu, Yingxia

Author_Institution

Sch. of Civil Eng., Qingdao Technol. Univ., Qingdao, China

fYear

2011

fDate

15-17 July 2011

Firstpage

6602

Lastpage

6605

Abstract

By employing a ring shear apparatus, shear tests were conducted to examine the mechanical properties of clay under large shear displacement conditions. Based on the test results, the effects of stress history and shear speed on the shear resistance of over-consolidated silty clay were studied. The following results were found: (1) The variation of shear strength is related with the preconsolidation history and the shear speed. (2) With shear speed increasing, the peak strength and the strength reduction after peak value become greater. The faster shear tests are more favorable to the slip surface formation that leads to the ultimate stable shear strengths. (3) The variations of shear resistance in the fast shear ring shear tests are mainly due to the structural changes in the shear zone, while the influence of pore water during fast shearing is negligible.

Keywords

clay; shear strength; fast shear ring shear tests; mechanical properties; pore water; preconsolidation history; ring shear apparatus; shear displacement conditions; shear resistance; shear speed; shear zone; silty clay; slip surface formation; stable shear strengths; stress history; Educational institutions; History; Mechanical factors; Optical character recognition software; Resistance; Softening; Soil; over-consolidation; ring shear; shear strength; silty clay;

fLanguage

English

Publisher

ieee

Conference_Titel

Mechanic Automation and Control Engineering (MACE), 2011 Second International Conference on

Conference_Location

Hohhot

Print_ISBN

978-1-4244-9436-1

Type

conf

DOI

10.1109/MACE.2011.5988558

Filename

5988558