研究了在配合比数据相同的情况下分别使用机制砂、河砂、混合砂配制了C25、C35、C45、C60混凝土,研究的性能指标有坍落度、1h坍落度经时损失、压力泌水率、抗压强度、渗水高度、早期抗裂性能、电通量,并对该指标进行了分析和对比。经过对比分析,机制砂混凝土各项性能可以满足施工质量要求。 C25, C35, C45 and C60 concrete were prepared by using sand, river sand and mixed sand respectively under the condition of the same mixing ratio. The sludges, slump loss, Water rate, compressive strength, seepage height, early crack resistance, electric flux, and the index was analyzed and compared. After a comparative analysis, the performance of the machine-made sand concrete can meet the construction quality requirements.