提出一种新的骨料评价指标,能够通过测定骨料空隙率及估算骨料比表面积,进而利用公式计算得到相应的骨料的比实系数,并联合骨料级配评定相应骨料优劣。通过大量试验数据统计,证明其与混凝土工作性具有良好的相关性:当比实系数较大时,混凝土流动性较差,而当比实系数较小时,混凝土流动性较好。 Proposed a new aggregate evaluation index, through the determination of aggregate porosity and estimated aggregate specific surface area, and then use the formula to calculate the specific aggregate real factor, and aggregate grading to assess the pros and cons of aggregate . Through a large number of test data statistics, it is proved that it has a good correlation with the workability of concrete. When the specific real coefficient is large, the concrete has poor fluidity, while when the specific real coefficient is small, the fluidity of the concrete is better.