Research on the Shear Strength Properties of Expansive Soils

Author:

Chen Yi1,Zhao Jing1,Hu Xiao Hong1

Affiliation:

1. Xi'an University of technology

Abstract

The shear strength of expansive soils is now a key geotechnical problem. The water content and dry density of expansive soils have deep effect on its shear strength. For analyzing the detail relationship of the water content, dry density and shear strength of this special soil, direct shear test was carried out with the samples from Xinxiang in middle line of South to North water diversion project. The results indicate that both of the cohesion and friction angle grow with dry density and decrease with initial water content. Applying the linear regression calculation, we obtained mathematical expressions which reveal the variation of shear strength with the dry density and initial water content of Xinxiang expansive soils.

Publisher

Trans Tech Publications, Ltd.

Reference6 articles.

1. Q.Y. Fan, in: Expansive soils and engineering (Science Publication, Beijing 2008).

2. J.D. Liu, Q.Y. Li, B.W. Gong, in: Swelling properties of expansive rock in Middle Route Project of South-to-North Water Diversion, volume 33 of Chinese J. Geot. Eng. (2011), pp.826-830.

3. X.M. He, B. Huang, X.B. Rao, in: Experimental Research on Expansion and Shrinkage Characteristics of Compacted Expansive Rock, volume 26 of Journal of Yangtze River Scientific Research Institute (2009), pp.14-19.

4. B. Hu, B.W. Gong, J. Tong, in: Experiment Research on One-dimensional Swelling Pressure of Remolded Expansive Clay in Middle Route Project of Sonth-To-North Water Transfer, volume 26 of Journal of Yangtze River Scientific Research Institute (2009).

5. K.J. Chen, L.C. Miao, Y. Cui, in: riaxial tests on unsaturated expansive soils with different initial dry densities, Suppl. of Rock and Soil Mechanics (2005).

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