▎ 摘　　要

NOVELTY - Concrete material comprises 300-450 pts. wt. cement, 600-1350 pts. wt. sand, 0-1600 pts. wt. coarse aggregate, 150-350 pts. wt. water, 9-60 pts. wt. graphene and 9-60 pts. wt. dispersing agent. USE - Concrete material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing concrete material, which involves: (A) dissolving dispersing agent in water, and adding graphene, placing in ultrasonic generator to disperse and dissolve to obtain uniform graphene solution; (B) mixing cement, sand and coarse aggregate to obtain mixed material; (C) adding graphene solution into obtain mixed material and stirring uniformly to obtain stirred material; and (D) detecting structural component of obtained material with electrode, and pouring it in predetermined location and detecting change in resistivity between electrode to achieve change in damage.