再生混凝土与钢筋粘结性能的试验研究  

Experimental Study on Bonding Properties between Recycled Concrete and Rebars

作　　者：徐一凡[1] 孙伟民[1] 郭樟根[1] 

机构地区：[1]南京工业大学土木工程学院,210009

出　　处：《特种结构》2012年第3期81-84,共4页Special Structures

基　　金：国家自然科学基金(50708045);江苏省六大人才高峰(07-F-015)资助项目

摘　　要：参照《混凝土结构试验方法标准》(GB50152-92),通过拔出试验,研究了再生混凝土与钢筋之间的粘结～滑移性能,分析了在钢筋屈服之前的荷载～钢筋滑移曲线变化趋势,考察了不同再生骨料取代率对再生混凝土与钢筋粘结性能的影响。试验结果表明:再生混凝土与钢筋的粘结性能和普通混凝土相似,再生骨料取代率对再生混凝土与钢筋的粘结性能影响不大。通过对试验数据的回归分析,对钢筋在再生混凝土中的锚固长度取值进行了初步探讨。According to《Standard Methods for Testing of Concrete Structures》,a pull-out test was performed to study the bond-slip performans betweem recycled concrete and rebars.The load-slip curve before the steel yields-reinforced was analyzed.The effect of different recycled coarse aggregate replacement on bonding behavior of recycled concrete and reinforcement was studied.The test results show that the bonding properties between recycled concrete and reinforcement were similar to ordinary concrete,there was little effect of recycled coarse aggregate replacement on the bonding behavior between recycled concrete and reinforcement.Based on the regression analysis of test data,the anchorage length of rebars in recycled concrete was preliminarily suggested.

关 键 词：再生混凝土 拔出试验 粘结性能 

分 类 号：TU528[建筑科学—建筑技术科学]