Influence of Strength Attenuation for Silt Soil on the Fatigue Life of Semi-Rigid Base

Xiao Ming Yi; Song Gen Wang; Xiu Guang Song; Zhen Qing Liu

doi:10.4028/www.scientific.net/AMM.353-356.120

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Causes Analysis and Control Measures of Landslide on Expressway from Yangshuo to Pingle in Guangxi
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Influence of Strength Attenuation for Silt Soil on the Fatigue Life of Semi-Rigid Base
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 353-356Influence of Strength Attenuation for Silt Soil on...

Influence of Strength Attenuation for Silt Soil on the Fatigue Life of Semi-Rigid Base

Abstract:

Influence of water content on the resilience modulus for silt soil in Yellow River alluvial plane is studied by laboratory tests. And its found that resilience modulus decrease dramatically when the water content exceeds the optimum. So the subgrade cant support the pavement structure enough, which could make the fatigue life of semi-rigid base little than the design value. Basing on the distribution of the water content in real, the silt subgrade is divided into three parts in accordance with the difference of resilience modulus. Then, the tensile stress and fatigue life of semi-rigid base is gotten, and results show the strength decay of subgrade reduced the fatigue life of semi-rigid base up to 50%, which exposes the causes of early damage of semi-rigid base asphalt pavement on silt subgrade.

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Periodical:

Applied Mechanics and Materials (Volumes 353-356)

Pages:

120-124

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.353-356.120

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Online since:

August 2013

Authors:

Xiao Ming Yi*, Song Gen Wang, Xiu Guang Song, Zhen Qing Liu

Keywords:

Fatigue Life, Semi-Rigid Base, Silt Subgrade, Strength Attenuation

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