▎ 摘　　要

NOVELTY - Active powder concretefor tunnel construction and maintenance and strengthening, comprises 35-50 pts. wt. common silicate cement, 3-5 pts. wt. superfine mineral powder, 0.5-1.5 pts. wt. silicon ash, 4-8 pts. wt. fly ash, 0 5-1 pts. wt. expansion agent, 40-60 pts. wt. sand, 0.005-0.01 pts. wt. carbon black, 0.2-0.5 pts. wt. graphene, 0.1-0.4 pts. wt. water reducing agent, 1-3 pts. wt. modified polyoxyethylene polymer, 0.1-0.2 pts. wt. tributyl phosphate, 1.5-3 pts. wt. high-strength superfine steel fiber, 0.2-1 pts. wt. ultra-high performance polyimide fiber, 1-2 pts. wt. high performance high-performance polyimides fiber and 1-2 pts. wt. microorganism capsule. USE - The active powder concrete is useful for tunnel construction and maintenance and strengthening, and cable disease tunnel. ADVANTAGE - The special active powder for concrete tunnel construction and maintenance and reinforcement has excellent performance, high strength, high impermeability, high corrosion resistance and excellent performance. It has toughened and modified toughness, impact resistance, shock resistance and crack resistance. It can adopt conventional perfusion process construction applied to the tunnel and repair reinforcement of disease tunnel, good bonding property with the tunnel original lining, good waterproof performance, which can be applied to various severe environments, with self-healing ability, reducing the post maintenance costs. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation method of active powder concrete.