▎ 摘　　要

NOVELTY - Graphene additive mixture comprises (a) 20-50 mass% resin component, (b) 50-80 mass% a solvent component and (c) 0.001-0.1 mass% graphene component, where the resin component (a) comprises polypropylene, polypropylene, or styrene-butadiene-styrene, the solvent component (b) comprises toluene, xylene, or decalin, the (c) graphene component has a surface area of 150-350 m2/g, the number of layers of 3-20, a thickness of 5-100 nm, a carbon content of at least 99% and the mixture of graphene and graphene additives is evenly dispersed and stable for a long time. USE - The mixture is useful for preparing graphene bitumen, preferably 60/70 bitumen. ADVANTAGE - The mixture provides graphene bitumen with high waterproofing properties e.g. softening point and penetrance different from that of original 60/70 bitumen.