Abstract
In this study, in order to examine the seismic behavior of small earth dams with geosynthetic clay liners (GCLs), full-scale shaking table test using an embankment with 3m high was carried out. The GCL was laid in a staircase shape in the embankment. Large longitudinal cracks have developed at the crest of the embankment by level 2 earthquake motion involved with the maximum acceleration of 471Gal. Based on the observation of the cross-section embankment, it was found that the cracks were developed due to the presence of the GCL. The data of the response acceleration revealed that the seismic characteristics between the upstream side separated by the GCL and the downstream side were different from each other.