Long-term performance of steel-concrete composite wall panels under axial compression

Abstract

Innovative steel-concrete composite (SCC) walls are increasingly becoming a popular choice in low-to-high-rise buildings due to their high load-bearing capacity and convenience of construction. The long-term behaviour of these walls is therefore of great significance to the serviceability behaviour and this paper attempts to address this important issue. The paper firstly discusses the scarcity of experimental investigations on the long-term behaviour of SCC walls, and then presents an experimental program for both plain concrete and SCC wall panels under sustained axial loading, with a 20% axial load ratio for the concrete. The ultimate axial strength test is conducted after the long-term t..