石灰石粉掺量和细度对混凝土性能的影响

该文研究了石灰石粉掺量和细度对中等强度普通混凝土的工作性能和强度影响。研究结果表明:混凝土中掺入一定量的石灰石粉后,其坍落度随着石灰石粉掺量和细度的增加而增加,但增加速率明显放缓。混凝土的抗压强度在石灰石粉掺量为15%时出现最大值,而且石灰石粉细度越大,混凝土的早期强度越高,但其后期强度出现相反规律。

Impact of Limestone Powder Content and Fineness on Concrete Performance

This paper studies the impact of limestone powder content and fineness on the performance and strength of common concrete of moderate strength. The study shows that if a certain amount of limestone powder is added into the concrete, its slump increases with the increase of limestone pow-der content and fineness, but the increasing rate obviously slows down. The concrete compressive strength maximizes when the limestone powder content reaches 15%, and the greater the limestone powder fineness is, the greater the early concrete strength is, but it shows the contrary rule in later strength.