碱激发矿渣混凝土抗氯离子渗透性及电测试验方法研究  

Investigation on Resistance of Chloride Penetration of Alkali Activated Slag Concrete and Related Electrical Test Methods

作　　者：于琦 万小梅[1,3] 赵铁军[1,3] 王腾 韩笑 孙忠涛 YU Qi;WAN Xiaomei;ZHAO Tiejun;WANG Teng;HAN Xiao;SUN Zhongtao(School of Civil Engineering,Qingdao University of Technology,Qingdao 266033,Shandong,China;Qingdao Qingjian New Material Group Co.,Ltd,Qingdao 266108,Shandong,China;Cooperative Innovation Center of Engineering Construction and Safety in Shandong Blue Economic Zone,Qingdao University of Technology,Qingdao 266033,Shandong,China)

机构地区：[1]青岛理工大学土木工程学院,山东青岛266033 [2]青岛青建新型材料集团有限公司,山东青岛266108 [3]青岛理工大学蓝色经济区工程建设与安全山东省协同创新中心,山东青岛266033

出　　处：《材料导报》2022年第5期96-101,共6页Materials Reports

基　　金：国家自然科学基金(51878365)。

摘　　要：本工作采用交流电阻率法、电通量法和快速氯离子迁移法(RCM)对碱激发矿渣混凝土的抗氯离子渗透性进行评价,并分析其变化机理。同时结合氯盐环境长期暴露试验,以氯离子迁移系数为参考,探讨上述三种电参数测试方法对碱矿渣混凝土的适用性。结果表明:NaOH激发矿渣混凝土较水玻璃激发矿渣混凝土的抗氯离子侵蚀能力强;掺入粉煤灰会增大碱矿渣混凝土孔隙率,削弱其抗氯离子侵蚀能力;交流电阻率法、电通量法和RCM法评价结果之间有较强相关性,且对碱矿渣混凝土都有较好的适用性。Alternating current resistivity method,electric flux method and rapid chloride migration method(RCM)were applied to evaluatethe resistance of chloride penetration in alkali-activated slag concrete and the evolution mechanism was analyzed.At the same time,combined with the long-term exposure test of chloride environment,the applicability of the above three electrical parameters test methods to the alkali slag concrete was discussed.The results show that the slag concrete activated by sodium hydroxide behaves higher resistance to chloride penetration than the slag concrete activated by water glass.The addition of fly ash increases the porosity of alkali-activated slag concrete and weakens the ability to resist chloride penetration.There are good correlations among the evaluation results of resistivity method,electric flux method and RCM method,and all of them behave sound applicability to alkali-activated slag concrete.

关 键 词：碱激发矿渣混凝土 抗氯离子渗透性 电阻率 电通量法 快速氯离子迁移法 

分 类 号：TU528[建筑科学—建筑技术科学]