水泥和骨料化学成分对碱骨料活性影响的试验研究  

Experimental Study on the Influence of Chemical Composition of Cement and Aggregate on the Activity of Alkali Aggregate

作　　者：胡强圣 张平[1] 刘志龙[1] 朱正贵 HU Qiangsheng;ZHANG Ping;LIU Zhilong;ZHU Zhenggui(Department of Construction Engineering,Anqing Vocational&Technical College,Anqing Anhui 246003,China;China Gezhouba Group Three Gorges Construction Engineering Co.,Ltd.Yichang Hubei 443002,China)

机构地区：[1]安庆职业技术学院建筑工程系,安徽安庆246003 [2]中国葛洲坝集团三峡建设工程有限公司,湖北宜昌443002

出　　处：《盐城工学院学报（自然科学版）》2019年第4期1-4,共4页Journal of Yancheng Institute of Technology:Natural Science Edition

基　　金：安徽省高校自然科学研究重点项目(KJ2017A786);安徽省高校自然科学研究重点项目(KJ2018A0899);安徽省高校质量工程项目(2018jyxm0643)

摘　　要：试验采用5种不同的水泥、10种不同的骨料,通过快速砂浆棒法研究水泥和骨料的化学成分对碱骨料活性的影响。结果表明:当水泥化学成分不同,骨料化学成分相同时,各龄期的膨胀率与MgO质量分数成正比,与SiO 2质量分数分数成反比;当骨料化学成分不同,水泥化学成分相同时,各龄期的膨胀率与骨料中碱质量分数、SiO 2质量分数成正比,与MgO质量分数成反比。Five kinds of cement and 10 kinds of aggregate were used to study the influence of chemical composition of cement and aggregate on the activity of alkali aggregate by the accelerated mortar bar test.The results show that when the chemical composition of cement is different and the chemical composition of aggregate is the same,the expansion rate of each age is directly proportional to the MgO content and inversely proportional to the SiO 2 content.When the chemical composition of aggregate is different and the chemical composition of cement is the same,the expansion rate of each age is directly proportional to the alkali content and SiO 2 content of aggregate,and inversely proportional to the MgO content.

关 键 词：化学成分 碱骨料活性 快速砂浆棒法 膨胀率 

分 类 号：TU525[建筑科学—建筑技术科学]