摘要
为研究碳化再生细骨料对氯离子侵蚀下再生混凝土(RAC)与钢筋粘结滑移性能,采用加速通电锈蚀法,在再生粗骨料取代率70%的条件下,分别以经碳化后的再生细骨料取代率(0%、 20%、 30%、 40%)及钢筋锈蚀率(0%、 1%、 2%、 4%)为主要参数,进行28组试件的拉拔试验,获得不同再生细骨料掺量下再生混凝土与不同锈蚀程度钢筋间的荷载-滑移曲线,并与掺入未碳化的再生细骨料情况作对比.基于试验结果,分析经碳化后的再生细骨料取代率、钢筋锈蚀率对钢筋-再生混凝土间峰值拉拔力、粘结刚度、粘结滑移曲线的影响.
To study the effect of carbonized recycled fine aggregate on bond behavior between corroded rebar and recycled aggregate concrete, 28 sets of pull-out tests were performed on recycled aggregate concrete with recycled coarse aggregate replacement percentage of 70%. Four carbonized recycled fine aggregate replacement percentages (i.e., 0%, 20%, 30% and 40%) and four corrosion rates (i.e., 0%, 1%, 2% and 4%) were considered in this study. Based on these experimental results, the effects of carbonized recycled fine aggregate replacement percentages and corrosion rates on peak pull-out strength, bond stiffness and bond-slip curve were analyzed.
作者
郑建岚
丁进炜
游帆
ZHENG Jianlan;DING Jinwei;YOU Fan(School of Engineering, Fujian Jiangxia University, Fuzhou,Fujian 350108,China;College of Civil Engineering, Fuzhou University, Fuzhou,Fujian 350108,China;Collaborative Innovation Centre forEnvironmental Friendly and Energy Saving HPC of Fujian Province, Fuzhou,Fujian 350108,China)
出处
《福州大学学报（自然科学版）》
CAS
北大核心
2019年第2期258-264,共7页
Journal of Fuzhou University(Natural Science Edition)
基金
国家自然科学基金资助项目(51578153)
国家自然科学基金联合基金重点支持项目(U1605242)
关键词
再生混凝土
再生细骨料
碳化
钢筋锈蚀率
粘结滑移
recycled aggregate concrete
recycled fine aggregate
carbonization
rebar corrosion rate
bond slip
