▎ 摘　　要

NOVELTY - High strength and high elasticity concrete crack repair material comprises 0.01-3 pts. wt. sodium naphthalenide, 10-30 pts. wt. polyurea resin, 1-40 pts. wt. ultra-fast cement, 0.5-10 pts. wt. 2-ethyl hexy glycidyl ether, 0.1-3 pts. wt. reduced graphene oxide film, 0.1-5 pts. wt. sodium hexafluorosilicate, 1-5 pts. wt. polybutylene adipate terephthalate and 0.5-5 pts. wt. octacalcium phosphate based on 100 pts. wt. ethylene-vinyl acetate resin. USE - High strength and high elasticity concrete crack repair material. ADVANTAGE - The high strength and high elasticity concrete crack repair material is cost-effective, has a tensile strength of about 12.6 N/mm2, compressive strength about 67.5 N/mm2, modulus of elasticity about 2.14 x 105, excellent mechanical strength, high elasticity, so prevents re-cracking and water leakage even after concrete crack repair work, anti-freezing effect, increases the adhesion of the concrete due to external stimulation and prevents the concrete crack repair material composition from falling off or peeling off from the crack area. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a concrete crack repair method, which involves cutting the cracked portion of the concrete structure to form a V-shaped groove of 10-20 mm, grinding and trimming the cut concrete structure, filling and curing the concrete crack repairing material composition in the V-shaped groove of the ground concrete structure.