▎ 摘　　要

NOVELTY - A high-toughness, highly-adhesive C250 ultra-high-strength hybrid fiber concrete comprises 550-560 parts mass cement, 760-770 parts mass sand, 830-840 parts mass crushed stone, 65-70 parts mass fly ash, 103-108 parts mass straw ash, 125-135 parts mass fumed silica, 5.4-5.6 parts mass nano-silicon, 70-75 parts mass water, 20-21 parts mass water reducing agent, 16-17 parts mass activator, 3-3.3 parts mass defoamer, 14.5-15 parts mass shrinkage reducing agent, 7.5-8 parts mass ramie fiber, 13.3-13.6 parts mass basalt fiber, 21-21.5 parts mass calcium carbonate whisker, 42-46 parts mass nano-titanium/graphene oxide dispersion and 22-23.5 parts mass carboxy-modified polyvinyl alcohol polymer. USE - High-toughness, highly-adhesive C250 ultra-high-strength hybrid fiber concrete. ADVANTAGE - The C250 ultra-high-strength hybrid fiber concrete has high toughness and cohesiveness, and excellent durability and bonding performance with steel profile. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the C250 ultra-high-strength hybrid fiber concrete.