▎ 摘　　要

NOVELTY - A cement grouting material comprises 40-50 mass% PO 42.5R cement, 5-10 mass% 42.5 fast hard cement, 40-52 mass% quartz sand, 3-5 mass% gypsum, 2-15 mass% swelling agent, 0.3-2 mass% additive, 0.01-1 mass% graphene oxide, and 0.05-5 mass% high-performance fibers. USE - Cement grouting material. ADVANTAGE - The grouting material has high strength, no shrink, high fluidity and no harmful ingredients.