▎ 摘　　要

NOVELTY - A crack-resistant and self-repairing concrete composition comprises 1-2 pts. wt. graphene oxide, 40-50 pts. wt. Bacillus coahuilensis liquid with a concentration of 2.5x 109-3x 109 cells/ml, 4-5 pts. wt. calcium lactate/calcium formate, 1-3 pts. wt. nutrient solution, and 8-15 pts. wt. sodium silicate. USE - Crack-resistant and self-repairing concrete composition. ADVANTAGE - The crack-resistant and self-repairing concrete composition comprises graphene oxide, which can effectively form a barrier layer with cement matrix, increasing the bending degree of transmission resistance and penetration path, and narrowing the pore structure of the cement-based material. A firm adhesion is provided for B.coahuilensis, reducing the death rate even in strong alkali environment. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) preparation of the concrete composition; and (2) usage method of the concrete composition.