Pullout Tests Study on Performance of Interface between Geogrid and Soil

Jian Cheng Sun; Zi Jia; Cheng Zhi Xiao

doi:10.4028/www.scientific.net/AMR.446-449.1661

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 446-449Pullout Tests Study on Performance of Interface...

Pullout Tests Study on Performance of Interface between Geogrid and Soil

Abstract:

The interface interaction between geogrid and soil is one of key issues on stability of geosynthetic-reinforced soil structures. Comparative analysis of properties of geogrid-clay interface under the different kinds of geogrid, different normal stresses, speeds of pullout and water contents of clay are conducted by medium-sized pullout tests. The tests results showed that ultimate pullout force of geogrid, interfacial cohesion and frictional coefficient are significantly affected by various water contents of clay. Ultimate pullout forces of geogrid tending to remarkably difference when subject to different normal stresses at lower water contents, and frictional coefficient of interface decrease with the increase of water content, interfacial cohesion has a tendency to increase followed by decreasing with increase of water contents. Moreover, the curves of load and displacement possess three piecewise consisting of linear increase, non-linear increase and ultimate pullout, and as water content increase interval nonlinear changing stage is not conspicuous.

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Periodical:

Advanced Materials Research (Volumes 446-449)

Pages:

1661-1665

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.446-449.1661

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Online since:

January 2012

Authors:

Jian Cheng Sun, Zi Jia, Cheng Zhi Xiao

Keywords:

Geogrid, Interface between Geogrid and Soil, Pull-Out Test, Water Content

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