Abstract
Four shear wall specimens made of high-performance concrete with blast-furnace-slag (BFS-HPC) are tested and studied under low frequency cyclic loading. Prior to the cyclic test, three specimens are subjected to elevated temperatures (400°C, 600°C) and two of them are mixed with polypropylene fiber. Based on experimental results, different curves are drawn and analyzed to study the seismic behavior of BFS-HPC shear walls after fire. They include load vs. lateral displacement hysteretic curves, load vs. lateral displacement skeleton curves, energy dissipation capacity curves, and stiffness degradation curves etc. Besides, the effect of polypropylene fiber on the seismic behavior of BFS-HPC shear wall after fire is also examined. This investigation demonstrates that elevated temperature exposure dramatically decreases the seismic performance of BFS-HPC shear walls, whereas polypropylene fiber can remarkably improve the seismic behavior of BFS-HPC shear walls after fire.
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