建筑结构学报2017，Vol.38Issue(4)：129-140,12.DOI:10.14006/j.jzjgxb.2017.04.014
钢筋-中高强度再生混凝土黏结滑移性能梁式试验研究
Beam-type experimental study on bond-slip properties between rebars and medium/high strength recycled concrete
摘要
Abstract
In order to investigate the bond-slip behavior between steel bars and recycled concrete,the bond-slip properties of 13 reinforced medium/high strength recycled concrete beam-type specimens were tested.The effects of the shape of steel bar,the length of anchorage,the strength of concrete and the replacement ratio of recycled aggregate on the bond-slip behavior between steel bars and recycled concrete were studied.Research shows that:when the recycled coarse aggregate replacement is 33％ ～66％ and the fine aggregate is natural sand,the bond strength between steel bar and recycled concrete is basically coincident with ordinary concrete.When the replacement rate of recycled coarse aggregate is 100％ and the fine aggregate is over 50％,the bond behavior between rebars and recycled concrete is degraded distinctly.Compared with the ordinary concrete specimens,the bond efficiency coefficient of the relative concrete strength of the recycled coarse aggregate concrete specimens is higher.The bond strength between deformed bars and recycled concrete is better than plain ones.The bond strength between steel and recycled concrete decreases with the increase of the anchorage length of reinforcement.The calculated values of the fitted bond-slip constitutive model agree with the experimental values well.关键词
钢筋/中高强度再生混凝土/静力试验/黏结效率/黏结-滑移本构模型Key words
steel bar/medium/high strength recycled concrete/static test/bond-slip efficiency/bond-slip constitutive model分类
建筑与水利引用本文复制引用
曹万林,林栋朝,董宏英,张建伟,彭世阳,朱可睿..钢筋-中高强度再生混凝土黏结滑移性能梁式试验研究[J].建筑结构学报,2017,38(4):129-140,12.基金项目
国家自然科学基金重点项目(51438007). （51438007）
