Fire Resistance of Steel Connectors of Precast Lightweight Concrete Walls

In this study the fire test was performed to investigate mechanic behaviors and failure patterns of precast normal weight concrete (NWC) lightweight (LWC) walls with three types commonly used steel connectors, namely dry (61), wet (81), bearing (56E) connectors. For LWC wall specimens, on lateral application tension, cracking load values dry, wet, bearing-type connectors were 95.1%, 86.3%, 83.0%, respectively, original loads, their ultimate 81.6%, 90.7%, 85.0%, original. shearing after resistance test, value connector 88.2% load. Moreover, all specimens exhibited a considerable loss in ductility ratio test. However, hysteresis energy that can be absorbed seismic superior those NWC wall. Therefore, alt-hough similar patterns, for walls.