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Influence of Soil Moisture Content on Shear Characteristics of Benggang

Lin Jinglan, Huang Yanhe, Debin Zhang, Wang Yan, Qijun Chen, Jiping Chen, Xiaoli Wu

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Abstract

This study analyzed the regularity of shear strength characteristics variation with soil moisture content in different soil layers by using a tri-axial shear test.The results showed that:(1)With the increase of soil moisture content,the cohesive force in red soil layer increased gradually.However,cohesive force fell sharply when the soil moisture contents reached over 22%.With the increase of soil moisture content in sandy soil layer,the cohesive force showed a trend of decrease after the first increase,but the variation of the cohesive force was small.The cohesive force in the detritus layer changed in a fluctuating.(2)The internal friction angle decreased with the increase of soil moisture content in three layer soils.(3)The shear strength decreased with the increase of soil moisture content.

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What this paper is about

This study analyzed the regularity of shear strength characteristics variation with soil moisture content in different soil layers by using a tri-axial shear test.The results showed that:(1)With the increase of soil moisture content,the cohesive force in red soil layer increased gradually.However,cohesive force fell sharply when the soil moisture contents reached over 22%.With the increase of soil moisture content in sandy soil layer,the cohesive force showed a trend of decrease after the first increase,but the variation of the cohesive force was small.The cohesive force in the detritus layer changed in a fluctuating.(2)The internal friction angle decreased with the increase of soil moisture content in three layer soils.(3)The shear strength decreased with the increase of soil moisture content.

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Available abstract

This study analyzed the regularity of shear strength characteristics variation with soil moisture content in different soil layers by using a tri-axial shear test.The results showed that:(1)With the increase of soil moisture content,the cohesive force in red soil layer increased gradually.However,cohesive force fell sharply when the soil moisture contents reached over 22%.With the increase of soil moisture content in sandy soil layer,the cohesive force showed a trend of decrease after the first increase,but the variation of the cohesive force was small.The cohesive force in the detritus layer changed in a fluctuating.(2)The internal friction angle decreased with the increase of soil moisture content in three layer soils.(3)The shear strength decreased with the increase of soil moisture content.

Key concepts: Water content, Soil water, Moisture, Direct shear test, Field capacity, Soil science, Friction angle, Geotechnical engineering

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