ECC로 보강한 조적벽체의 전단성능에 관한 실험적 연구

Abstract

In order to performing remodeling or change the usage of building. URM walls which commonly in apartment as non-structural element need to have reliable performance of building because of this types of wall could make more wastes in construction site and removal procedure may cause delay of construction. using normal shotcrete, as retrofitting method, cannot improve ductility and toughnessof retrofitting materials. In this study, we used sprayed Eccs for retrofitting URM wall. ECCs can be designed to work in conjunction with exisiting walls to increase both strength and ductility for in-plane behavior of the URM wall. And this may change non-structural masonry wall to structural wall. To ensure that this technique will perform its intended purpose, in-plame lateral loading test was performed. The results of lateral load test of two retrofittted URM compared to non-retrofitted one. Retrofitted walls are cconsisted of just sprayed and anchored to wall base, RTM-ECC and have wiremesh, same detail of others, TRM-ECC-WM. Retrofitted specimens show significant increase of strength, ductility and energy dissipation capacity compared to URM. RTM-ECC show stiff strength degradation however, RTM-ECC-WM show slow degradation of strength because of the load transferring effect of wiremesh.