In this study, creep reduction factor(RFcr) of geosynthetic strip for reinforcement is estimated by using guideline specified in KS K ISO TR 20432. Time-Temperature Superposition(TTS) and conventional creep test are conducted for the case of 66% ~ 82%...
In this study, creep reduction factor(RFcr) of geosynthetic strip for reinforcement is estimated by using guideline specified in KS K ISO TR 20432. Time-Temperature Superposition(TTS) and conventional creep test are conducted for the case of 66% ~ 82% of ultimate tensile strength(UTS) of the reinforcement. The creep deformation for the conventional method is slightly different compared to the creep deformation for the SIM. Based on the results, Creep reduction factors are 1.733 using conventional method, and 1.406 using accelerated creep test at 50 years of design life. It makes a large difference in creep reduction factors for both cases because rupture time of the case for applying 70% of UTS appears to be early. Therefore, additional creep rupture data of conventional method is needed to determine reasonable value.