Static cyclic tests on URM wall before and after retrofitting with composites

摘要: Four years ago, an extensive experimental program for retrofitting of unreinforced masonry (URM) walls has been switched on in Switzerland. The program includes inplane dynamic and static cyclic tests on URM walls retrofitted using composites as well as shotcrete. This paper presents preliminary test results of the static cyclic tests. The test specimens are half-scale specimens built using half-scale hollow clay masonry units and weak mortar. The specimens, before and after retrofitting, are subjected to a series of force and displacement control test runs. The test shows that the composites improve the cracking and ultimate load of the retrofitted specimen by a factor of 3 and 1.5, respectively.