▎ 摘　　要

NOVELTY - Anticorrosive concrete grouting material comprises 1 pts. wt. expandable compound cement, 1-2 pts. wt. slag sand, 0.05-0.2 pts. wt. fly ash, 0.005-0.05 pts. wt. polyvinyl alcohol, 0.0002-0.002 pts. wt. graphene oxide, 0.005-0.01 pts. wt. water reducing agent, 0.005-0.01 pts. wt. coagulant, 0.0001-0.001 pts. wt. antifoaming agent, 0-0.05 pts. wt. mineral admixture and 0.25-0.55 pts. wt. water. USE - Anticorrosive concrete grouting material for coastal structure connection and coastal structure engineering construction, such as offshore building, bridge and tunnel, wind energy nuclear power station, oil drilling platforms, and seaport (claimed). ADVANTAGE - The anticorrosive concrete grouting material realizes non-shrinkage effect of grouting through GO-PVA hydrogel internal curing, compound cement micro-expansion and FA shrinkage effect, exerts energy storage effect of GO@PVA hydrogel microcapacitors to avoid formation of steel corrosion micro-cells in grouting sleeve, realizes self-immunity effect of steel corrosion, uses slag sand to enhance seawater erosion resistance of grouting material in field of rapid connection of coastal assembly structure, and has economic and environment-friendly benefit. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing an anticorrosive concrete grouting material for connecting coastal structure, which involves: (A) using polyvinyl alcohol and graphene oxide as raw materials in presence of an oxidant to carry out in-situ polymerization and intercalation method to obtain GO-PVA prepolymer body liquid; (B) mixing fly ash, water reducing agent, catalyst, and GO-PVA prepolymer liquid uniformly to form GO-PVAH@FA; (C) dispersing GO-PVAH@FA in a solution containing water reducing agent and retarder to form GO-PVAH@FA suspension; (D) mixing compound cement, blast furnace heavy slag sand, and ground slag powder uniformly to form a dry grouting mixture; and (E) mixing GO-PVAH@FA suspension with dry grouting material and antifoaming agent to obtain final product.