Determination of the Shear Strength of Unsaturated Loess Based on the Fractal Model Theory of Unsaturated Soils

Jing Yu Chen; Ying Hai

doi:10.4028/www.scientific.net/AMM.170-173.25

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 170-173Determination of the Shear Strength of Unsaturated...

Determination of the Shear Strength of Unsaturated Loess Based on the Fractal Model Theory of Unsaturated Soils

Abstract:

The shear strength value of unsaturated loess is required in the design in geotechnical engineering in the North and the North West of China. In 2004, a new method, that is the fractal model theory, was proposed for determining the shear strength of unsaturated soil. Based upon the fractal model theory, the surface fractal dimension DS and the air entry value of two unsaturated loess samples are obtained from their soil-water characteristic curve (SWCC), the shear strength contribution due to matric suction of the two loess samples is determined, a new approach for determination of the shear strength of unsaturated loess with its SWCC is presented. By comparing results of this paper with those of the laboratory tests, the relationship between the SWCC and the shear strength of unsaturated loess is discussed and the validity of the fractal model theory for unsaturated loess is explained.

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Periodical:

Applied Mechanics and Materials (Volumes 170-173)

Pages:

25-28

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.170-173.25

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Online since:

May 2012

Authors:

Jing Yu Chen, Ying Hai

Keywords:

Fractal Theory Model of Soil Pores, Shear Strength, Soil-Water Characteristic Curve (SWCC), Unsaturated Loess

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