Usually, the life times of geogrids are assessed as the long-term creep behavior which causes shape deformation and collapse of the slopes and embankments. During an earthquake the structure is subjected to additional loads, which may influence the creep characteristics of the reinforcement. SIM test provides an opportunity to study the effect of simulated seismic events or the influence of other additional loads, occurring at different intervals of the life of the structure, on the long-term strength of geosynthetic reinforcement. In this paper, two simulated seismic SIM tests were performed, one with a simulated seismic event at 23 step, the other tests carried out after 79 step. Creep strain decreased after seismic event cause of recovery force, then strain increased again. After same condition of seismic event in different times, strain finally overlapped.
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