目前，水泥市场比较混乱，有的水泥出现早期强度合格，甚至高出国家标准20％－3O％，但28天强度却达不到，有的水泥虽然都能达标，但28天强度高低不等，其富余系数在1．O—1．5内波动，加之有的施工企业工程垫资施工，经营状况不佳，原材料大部分是赊来的，故水泥厂家和品种变 At present, the cement market is relatively confusing, and some cements have passed the early strength standard, even 20%-30% higher than the national standard, but the strength is not reached in 28 days. Although some cements can meet the standards, the strength varies from 28 days to 28 days. The coefficient of surplus is 1. O-1.5 fluctuations, combined with some construction company construction advances, poor operating conditions, most of the raw materials are imported, so cement manufacturers and varieties change