摘要
通过钢筋开槽内贴应变片的拔出试验方法,得出不同再生粗骨料取代率与不同锚固长度下的再生混凝土与钢筋之间的荷载-滑移曲线。分析粗骨料取代率和锚固长度对再生混凝土与钢筋黏结滑移性能的影响,确定再生混凝土与钢筋的黏结滑移本构关系,得出钢筋与再生混凝土的黏结性能随着再生粗骨料取代率的增加呈逐渐降低的趋势,在锚固长度达到设计要求时,再生混凝土与钢筋的黏结性能取决于钢筋的拉拔强度。
Through a pull-out test was designed,by means of slotted steel strain gauge pasted point detection techniques,and the load-slip curves between recycled concrete with different recycled coarse aggregate replacement percentage and rebar were recorded.This article studied the impact of different recycled aggregate replacement rate and the anchorage length for the bond strength between the recycled aggregate concrete and reinforced,and provided a beneficial reference for engineering design of recycled concrete structure under similar conditions.Determined the recycled concrete and reinforced the bond-slip constitutive relation.Come to the bonding properties of reinforced recycled concrete with recycled aggregate rate increase gradually decreased in the anchorage length sufficient to meet the design requirements,performance depended on the pull-out strength of reinforced recycled concrete and reinforced the bond.
出处
《土木工程学报》
EI
CSCD
北大核心
2013年第S2期225-231,共7页
China Civil Engineering Journal
基金
国家高技术研究发展计划重点项目(2009AA0323)子课题
内蒙古科技大学创新基金(2010NC046)
包头市科技局项目(2012S2005-9)
关键词
粗骨料取代率
锚固长度
黏结-滑移
recycled coarse aggregate replacement percentage
anchorage length
load-slip
