石灰石粉作掺合料对混凝土工作性能的影响

编号：JCHY00023

篇名：石灰石粉作掺合料对混凝土工作性能的影响

作者：马烨红; 吴笑梅; 樊粤明;

关键词：石灰石粉; 掺合料; 工作性能; 混凝土;

机构： 华南理工大学材料学院; 华南理工大学材料学院 广东广州; 广东广州; 华南理工大学特种功能材料及制备技术教育部重点试验室;

摘要： 通过Marsh筒[1]、胶砂流动度及实测混凝土和易性等方法,研究了石灰石粉作掺合料对混凝土工作性能的影响,并与粉煤灰的效果相对比。试验结果表明:一定颗粒分布的石灰石粉能改善新拌混凝土的流动性能,减少泌水率及缩短凝结时间。 The influence of limestone powder admixture on working performance of concrete is discussed,which is evaluated by Marsh cone[1],fluidity of cement mortar and workability of concrete mixed.Simultaneously,this study also contrasts the working performance of concrete containing limestone powder admixture as well as fly ash.It is shown that the limestone powder with appropriate particle distribution can improve the fluidity of concrete,reduce bleeding rate and shorten the setting time.