▎ 摘　　要

NOVELTY - A green early-strength ordinary Portland cement comprises base material, mixed material, modifier, retarder and grinding aid. The base material is ordinary Portland cement clinker. The mixed material comprises mineral powder, building garbage regeneration micro-powder, fly ash and metallurgical waste slag. The modifier comprises graphene oxide and graphene. The retarder comprises desulfurized gypsum. The common silicate cement clinker comprises 65-90 pts. wt. ordinary Portland cement clinker, 1-15 pts. wt. mineral powder, 1-10 pts. wt. building garbage regeneration micro-powder, 1-10 pts. fly ash, 1-10 pts. metallurgical waste residue, 0.03-0.05 pt. wt. graphene oxide, 0.03-0.08 pt. wt. graphene, 5 pts. wt. desulfurized gypsum and 0.02-0.05 pt. wt. grinding aid. USE - Green early strength ordinary Portland cement for prefabricated component. ADVANTAGE - The cement improves cement performance, meets use performance requirement of high-rise prefabricated component, saves consumption of resource, reduces pollutant discharge, provides consideration to social benefit, and has good popularization value. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation of green early-strength universal Portland cement.