In order to develop cement-based composites suitable for reinforcing brick wall surface,while reducing costs and ensuring mechanical performance,a High Performance-Fiber Reinforced Cementitious Composite (HP-FRCC) has been innovatively proposed,drawing from UHPC and ECC materials and components.The flow and mechanical proper-ties of HP-FRCC prepared with varying water-to-binder ratios,water reducers,limestone powder,and polyoxymethyl-ene (POM) fiber content are investigated by the step-down,compressive,and tensile tests.The results indicate that increasing the water-to-binder ratio and limestone powder content enhances fluidity,whereas higher fiber content re-duces fluidity.Optimal mechanical properties of HP-FRCC were achieved with a POM fiber content of 2.5％ and a limestone powder content of 35％～40％.The strong bond between POM fibers and the HP-FRCC matrix improves both tensile strength and ductility.Increasing the water-to-binder ratio results in a decline in mechanical properties,with tensile ductility initially increasing before decreasing.When the water reducer content is 2.0％,the composite exhibits the best flow performance,although its strength and tensile ductility are at their lowest.
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