石粉含量对C55机制砂自密实混凝土性能的影响

Influence of Stone-dust Content on Properties of C55 Manufactured Sand Self-compacting Concrete

本文结合某大桥波形钢腹板箱梁混凝土工程,重点研究了石粉含量对C55机制砂自密实混凝土的工作性能、力学性能和耐久性能的影响规律,试验结果表明:石粉含量对C55机制砂自密实混凝土的工作性能、力学性能和耐久性能有显著影响;当石粉含量为6%~8%时,C55机制砂自密实混凝土各方面性能较优。

Based on the project of concrete engineering of box girder with corrugated steel webs of a bridge, this paper mainly studied the influence of stone-dust content on workability, mechanical property and durability. The test results showed that the effects of fineness modulus and stone-dust content on C55 manufactured sand self-compacting concrete were remarkable; when stone-dust content was from 6% to 10%, C55 manufactured sand self-compacting concrete had better properties.