▎ 摘　　要

NOVELTY - Method for preparing a three-dimensional graphene cement slurry involves (1) dispersing graphite oxide powder in water to obtain a graphene oxide dispersion, (2) hermetically heating the graphene oxide dispersion to obtain three-dimensional graphene, (3) dispersing the three-dimensional graphene in water to obtain a three-dimensional graphene dispersion and (4) mixing the three-dimensional graphene dispersion with cement slurry. USE - The method is useful for preparing a three-dimensional graphene cement slurry for preparing a pipeline lining based on a three-dimensional graphene material used in application of municipal engineering (claimed). ADVANTAGE - The method promotes cement hydration, increases the content and crystallinity of calcium hydroxide in the cement, can effectively reduce the release of substances in the lining into the water, provides stronger leaching resistance, enhances the corrosion resistance of the lining and has broad application prospects in the application of municipal engineering tap water transmission and distribution. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) the three-dimensional graphene cement slurry prepared by the method; (2) a method (I) for preparing a pipeline lining based on a three-dimensional graphene material involving coating the inner wall of a pipeline with the three-dimensional graphene cement slurry and curing the pipeline and the three-dimensional graphene cement slurry coated on the inner wall of the pipeline to complete the preparation of the pipeline lining; and (3) the pipeline lining based on the three-dimensional graphene material prepared by the method (I).