粗骨料对混凝土抗氯离子渗透性的影响研究  

Effect of coarse aggregate on chloride ionpenetration resistance of concrete

作　　者：王祥 范宏[1] 杨海川 万小梅[1] 王洪全 牛宝乐 WANG Xiang;FAN Hong;YANG Haichuan;WAN Xiaomei;WANG Hongquan;NIU Baole(School of Civil Engineering,Qingdao University of Technology,Qingdao 266525,China)

机构地区：[1]青岛理工大学土木工程学院,青岛266525

出　　处：《青岛理工大学学报》2023年第2期17-22,50,共7页Journal of Qingdao University of Technology

基　　金：国家自然科学基金面上项目(51878365)。

摘　　要：为研究粗骨料对混凝土抗氯离子渗透性能的影响,采用交流电测量法、RCM法和电通量法进行混凝土抗氯离子渗透试验。3种试验方法均表明氯离子的渗透阻力随粗骨料体积分数的增加而增加;当最大粗骨料粒径小于25 mm时氯离子渗透阻力随着粗骨料最大粒径的增加而增加,大于25 mm时氯离子渗透阻力随之降低。粗骨料最大粒径对边界效应层厚度的影响较小。To study the influence of coarse aggregate on chloride penetration resistance of concrete,alternating current method,RCM method and electric flux method are used to conduct chloride penetration resistance test of concrete.All three methods show that the chloride ion penetration resistance of concrete specimens increases with the increase of the volume fraction of coarse aggregate.When the maximum coarse aggregate particle size is smaller than 25 mm,the chloride ion penetration resistance increases with the increase of the maximum particle size of coarse aggregate.When the maximum coarse aggregate particle size is bigger than 25 mm,the chloride ion penetration resistance decreases.The maximum diameter of coarse aggregate has little influence on the thickness of boundary effect layer.

关 键 词：粗骨料 交流电测量法 RCM法 电通量法 抗氯离子渗透性 边界效应 

分 类 号：TU528.1[建筑科学—建筑技术科学]