▎ 摘　　要

NOVELTY - A concrete repairing mortar comprises 50-70 pts. wt. aggregate comprising natural sand, 20-30 pts. wt. composite cement, 4-8 pts. wt. styrene-butadiene emulsion, 1-3 pts. wt. coupling agent, 0.5-2 pts. wt. composite shrinkage reducing agent, 0.1-0.5 pt. wt. water repellent, 0.1-0.5 pt. wt. graphene dispersion and 0.1-0.5 pt. wt. polypropylene fiber. The composite cement comprises fluoroaluminate cement to iron aluminate cement is 2-3:1. The natural sand having particle size of 30-120 mesh, preferably 15% natural sand having particle size of 30-50 mesh, 55% natural sand having particle size of 51-80 mesh and 30% natural sand having particle size of 81-120 mesh. USE - Concrete repairing mortar used for construction. ADVANTAGE - The rapid concrete repairing mortar is prepared by using different trace additives which improves the pore structure of the mortar base, construction performance and shrinkage performance of the repaired concrete and increases the compactness of the mortar. The mortar has rapid strength development property within a short period of time. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of concrete repairing mortar.