Abstract
Engineered cementitious composites (ECC) predominantly prefer polyvinyl alcohol (PVA) fiber as reinforcement. However, PVA fiber experiences melting at approximately 235 °C. When structures with high strength ECC (HSECC) occasionally suffer elevated temperatures or fire, PVA fiber would inevitably induce deterioration in mechanical properties and increase the probability of structural failure. In present study, basalt fiber with high temperature resistance was selected to replace PVA fiber, visual observations and strength deterioration of HSECC were evaluated after heating. The incorporation of basalt fiber has shown potential ability in improving flexural behavior of HSECC upon elevated temperatures. Interfacial transition zone (ITZ) is observed to be effectively enhanced under 200 and 400℃.
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