In order to performing remodeling or change the usage of building, URM walls which used commonly in apartment as non-structural element need to have reliable performance of buildings because re- moval of this types of wall could make more wastes…
In order to performing remodeling or change the usage of building, URM walls which used commonly in apartment as non-structural element need to have reliable performance of buildings because re- moval of this types of wall could make more wastes in construction site and removal procedure may cause de- lay of construction. Using normal shotcrete, as retrofitting method, cannot improve ductility and may cause brittle failure of structure. However, recent study for new materials, such as ECC or UHPC, can solve these problems increasing ductility and toughness of retrofitting materials. In this study, we used sprayed ECCs for retrofitting URM wall. ECCs can be designed to work in conjunction with existing 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-plane lateral loading test was performed. The results of lateral load test of two retrofitted URM compared to non-retrofitted one. Retro- fitted walls are consisted of just sprayed and anchored to wall base, RTM-ECC and have wire-mesh, same de- tail of others, RTM-ECC-WM. Retrofitted specimens show significant increase of strength, ductility and en- ergy 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 wire-mesh.