Abstract
A method of installing large compressible materials over a box culvert is one of the methods to reduce vertical earth pressure on a box culvert. From the geotechnical point of view, it is indicated that the waste Expanded Poly-Styrol (EPS) will be effective as a material for reduction of earth pressure.
In order to confirm the effectiveness of the heat compressed crashed EPS (HCCE) as a material for reduction of earth pressure and the mechanism of the reduction effect of vertical earth pressure, the earth pressure on a model box culvert were measured during the vertical loading process in the model tests. It was confirmed that the reduction effect of vertical earth pressure was strongly related to the relative difference of the compression settlement in the ground.
