Review on Mechanical Properties of Fiber-Reinforced Geopolymer Concrete After High-Temperature Exposure

Fiber-reinforced geopolymer concrete (GPC) is a green building material prepared from solid waste. At present, the research on its static and dynamic properties is relatively sufficient, but the mechanism of the effect of fiber on the mechanical properties of GPC after high temperature has not yet formed a perfect system. Therefore, this paper first analyzes the high temperature degradation mechanism of GPC under different material components. Then, the strengthening effect of two kinds of thermal characteristic fibers (steel fiber and polyvinyl alcohol fiber) on the mechanical properties of GPC after high temperature was discussed. Finally, a prediction model of compressive and tensile mechanical properties of GPC after high temperature considering the influence of fiber is proposed. The research results provide a reference for promoting the application of GPC in the field of structural engineering.