集料对自密实混凝土工作性能的影响

Influences of Aggregates on the Self-compacting Concrete Performances

根据流变学理论,在试验的基础上,研究了集料的级配、最大颗粒尺寸、砂率和颗粒形态对自密实混凝土流变性的影响.通过在一定范围内降低集料颗粒尺寸、优化配比及砂率、减少针片状颗粒含量,可以改善自密实混凝土的工作性能,对自密实混凝土的设计和应用具有一定的指导意义.

According to the theory of rheology,the influences of the graduation,maximum particle size,sand ratio and particle shape of aggregates on the rheological properties of the self-compacting concrete were studied by tests.It could improve the self-compacting concrete performances to reduce the size of aggregate particles and the optimum ratio within a certain range,to determine a reasonable sand ratio,and to reduce the acicular particle content.This would guide design and application of the self-compacting concrete.