石灰石机制砂石粉对中低标号强度混凝土性能的影响  

Effect of Limestone Machine-made Sand and Gravel Powder on Properties of Medium and Low Grade Strength Concrete

作　　者：陈发兵 李志超 Chen Fabing;Li Zhichao(Jiangxi Research and Design Institute of Building Materials Industry,Nanchang,Jiangxi 330001;Shangrao Guyu Concrete Co.Ltd.,Shangrao,Jiangxi 334000)

机构地区：[1]江西省建筑材料工业科学研究设计院,江西南昌330001 [2]上饶市固宇混凝土有限公司,江西上饶334000

出　　处：《江西建材》2021年第12期46-47,50,共3页Jiangxi Building Materials

摘　　要：文中结合江西上饶地区石灰石机制砂特性,研究了石灰石机制砂中石粉含量的变化对中低标号强度混凝土影响规律,给机制砂生产企业关键参数控制提供参考,对机制砂产品推广应用具有很好的指导意义。试验结果表明:在中低标号强度混凝土中,石灰石砂石粉含量13%,混凝土综合性能最佳。Based on the principle of materials science,combined with the characteristics of limestone manufactured sand in Shangrao,Jiangxi Province,the influence of the change of stone powder content in limestone manufactured sand on medium and low grade strength concrete is studied,which provides a reference for the control of key parameters of manufactured sand production enterprises and the promotion of manufactured sand products.The test results show that in the medium and low strength concrete,the content of limestone sand and stone powder is 13%,and the comprehensive performance of concrete is the best.

关 键 词：机制砂 石粉 混凝土 

分 类 号：TU528[建筑科学—建筑技术科学]