Effects of the material properties of Geogrid on the Stability of Reinforced Embankment

Abstract

This paper examines the effects of the stiffness and the shape of geogrid on the stability of reinforced embankment. A series of laboratory model tests on geogrid-reinforced embankment subjected to a uniform surface load were conducted. In the tests, the stability of the reinforced embankment was evaluated from the resultant bearing capacity and the lateral displacements of the slope. Based on the test results, the following results were obtained:
1) there exists an optimum stiffness of geogrid in order to mobilize the maximum reinforcement in the embankment in this test condition.
2) the shape of geogrid, particularly transversal element, have great reinforcing effect on the stability of the embankment.