Strength Design of Ultra-High-Performance Fiber-Reinforced Cementitious Composites Using Local Ecological Admixture

The ultra-high-performance fiber-reinforced cementitious composite (UHPFRC) is a new generation of building material with extremely high mechanical strength and durability, which can be used for ultra-high, thin-wall or long-span construction, that prolongs the service life construction in severe environments. In this study, UHPFRC was prepared range local ecological admixture to decrease material’s cost environmental impact. Raw materials’ proportions, water/binder ratio, fiber-volume contents, hybrid-fiber ratio were studied on property improvement UHPFRC, an F-test analysis induced reveal important significance compressive strength. results demonstrated 237.8 MPa achieved mineral substitution over 40%. particle-packing density binder reactivity both succeeded Water/binder determined hydration degree flowability affected through products microstructure. Also, more sensitive than content. order importance powder proportion > content ratio.