Pullout behavior of geo-composite in a volcanic cohesive soil

Abstract

Reinforcing Technique of embankment with geo-composite which has draining function and reinforcing function is effective for the most of high water content cohesive soils. This paper discusses on the pullout behavior of geo-composite in a volcanic cohesive soil. In a series of laboratory test, it was investigated that the effect of confining pressure or water content of soil specimen. Main conclusions are as follows.
1) Pullout resistant force can be evaluated as the sum of frictional component and cohesive component.
2) Depending on the water content of soil specimen, the cohesive component changes, but the frictional component does not change much.