FIELD TEST ON CONFINED-REINFORCED EARTH METHOD USING GEOGRID REINFORCEMENT FOR ASPHALT PAVEMENT

Abstract

This paper shows the results of the full scale field test on the confined-reinforced earth method (called CRE method) for asphalt pavement to confirm restraint efficacy of bumps occurring to road surface between concrete and soil structures due to earthquake. It consists of granular bed, geogrid reinforcement and expansion anchor. The structural characteristics of CRE method obtained form the test are as follows; 1) it restrains bumps occurring in road surface by laying CRE layer under the asphalt pavement, 2) it keeps good trafficability of vehicles after earthquake. This paper reports the structure of CRE method, restraint efficacy of bumps of asphalt pavement and its mechanism obtained from the test.