▎ 摘　　要

NOVELTY - Preparation of concrete additive involves adding 6-12 pts. wt. carboxylated graphene, 3-8 pts. wt. zinc oxide, 4-7 pts. wt. activated carbon and 30-40 pts. wt. nano heavy calcium powder into mixer for mixing, metering and distributing into packaging bag as required, metering 40-50 pts. wt. polyester fiber into packaged powder bag to be sealed to obtain finished product. USE - Preparation of concrete additive. ADVANTAGE - The prepared concrete additive enhances crack resistance and impermeability of the concrete, and improves corrosion resistance of the structural steel and the waterproof protection period of the building.