抄録
This paper describes model tests investigating the feasibility of utilizing polymer grid for suppressing the differential settlement of asphalt pavement constructed on a very soft clay, the Ariake clay ground. Repeated loading tests were carried out on pavement models of 2.2sq.m and 1m depth of a standard specification and those reinforcement by polymer grids in several geometries. The main results derived from are as follows: Polymer grid placed at the interface between base course and subgrade (the Ariake clay) contributes effectively for suppressing the differential settlement of pavement; Maximum pull-out resistance of polymer grid in subgrade, Tmax, closely depends upon the shear characteristics of the soil, Tmax/L=αcu+σtan (βφ), where α=0.53 and β=0 for the Ariake clay.
