Research Progress on Mechanical Properties of Steel Fiber Reinforced Alkali-activated Concrete

In this paper, the mechanical properties of steel fiber reinforced alkali-activated cementitious materials are introduced. The results show that the appropriate proportion of long steel fiber and short fiber is better than that of single long steel fiber or short steel fiber to enhance the splitting tensile strength of alkali-activated concrete. This may be because short and long fibers can effectively inhibit the expansion of microcracks and macrocracks, respectively.