石灰石粉对低熟料混凝土强度和耐久性能的影响研究  

Study on the influence of limestone powder on the strength and durability of low clinker concrete

作　　者：宋少民 黄京胜 SONG Shaomin;HUANG Jingsheng(Beijing Key Laboratory of Building Structure and Environmental Remediation Functional Materials,Beijing University of Civil Engineering and Architecture,Beijing 100044,China)

机构地区：[1]北京建筑大学建筑结构与环境修复功能材料北京市重点实验室,北京100044

出　　处：《混凝土》2021年第10期143-146,共4页Concrete

基　　金：北京建筑大学市属高校基本科研业务费专项资金资助和项目(X18255)。

摘　　要：为了阐明石灰石粉对低熟料胶凝材料混凝土的耐久性能的影响,通过改变胶凝材料中石灰石粉的比例,研究其对混凝土耐久性的影响。试验结果表明:石灰石粉占比为胶凝材料10%时,混凝土的抗压强度与基准组相比没有降低,并且工作性良好。石灰石粉掺量超过20%,低熟料胶凝材料混凝土耐久性逐渐劣化;石灰石粉替代低熟料胶凝材料不超过20%,性能降低不显著,在一定程度上具有技术可行性。In order to clarify the influence of limestone powder on the durability of concrete with low clinker cementitious material,it studies its influence on the durability of concrete by changing the proportion of limestone powder in cementitious material.The test results show that when the proportion of limestone powder is 10%of cementitious material,the compressive strength of concrete does not decrease compared with the reference group,and the working performance is good.When the content of limestone powder is more than 20%,the durability of concrete with low clinker cementitious material will gradually deteriorate.When the content of limestone powder is less than 20%,the performance of concrete with low clinker cementitious material is not significantly reduced,which is technically feasible to some extent.

关 键 词：石灰石粉 低熟料 混凝土 强度 耐久性 

分 类 号：TU528.01[建筑科学—建筑技术科学]