再生骨料混凝土抗氯离子渗透性能改善技术研究  

Study on Technologies of Improvements for Resistance of Concrete Incorporating with Recycled Aggregate to Chloride Penetration

作　　者：孙俊[1] 韦庆东[1] 徐莹[1] 张磊[1] 彭罗文[1] 孙佳[1] 

机构地区：[1]中国建筑科学研究院,北京100013

出　　处：《工程质量》2014年第12期45-48,共4页Construction Quality

基　　金："十二五"国家科技支撑计划课题:固体废弃物本地化再生建材利用成套技术(2011BAJ04B05)

摘　　要：采用调整配合比法和单掺膨胀剂法来改善掺入Ⅲ级再生粗、细骨料C30再生骨料混凝土抗氯离子渗透性能。试验结果表明:两种方法均可改善再生骨料混凝土抗氯离子渗透性能,调整配合比法改善再生骨料混凝土抗氯离子渗透性能效果优于单掺混凝土膨胀剂法;采用改善措施后,混凝土抗氯离子渗透性能随着再生骨料替代率增加呈现先增强后减弱的趋势。In this paper,resistance of C30 concrete incorporating with Class III recycled aggregate to chloride penetration was improved by adjusting the concrete mix proportion and mixing expansive agent. The test results indicated that resistance of concrete to chloride penetration was improved by the methods,and the method of adjusting the concrete mix proportion was more effective than the method of mixing expansive agent;through improvements,the resistance of recycled aggregate concrete to chloride penetration was enhanced first and then deteriorated with replacement ratio of recycled aggregate.

关 键 词：精再生骨料 混凝土 抗氯离子渗透性能 改善技术 

分 类 号：TU528[建筑科学—建筑技术科学]