再生混凝土与钢筋的粘结性能试验研究  

Study on bond behavior between recycled aggregate concrete and steel bar

作　　者：安新正[1,2] 易成[2] 刘燕[2,3] 张结太[1] 

机构地区：[1]河北工程大学土木学院,河北邯郸056038 [2]中国矿业大学力学与建筑学院,北京100083 [3]河北农业大学城乡建设学院,河北保定071001

出　　处：《河北工程大学学报（自然科学版）》2010年第3期1-4,共4页Journal of Hebei University of Engineering:Natural Science Edition

基　　金：煤炭资源与安全开采国家重点实验室开放课题基金(SKLCRSM09KFB08);河北省建设厅科研基金(2008104)

摘　　要：采用强度等级为C25废弃普通混凝土制备再生粗集料,并按照不同比例的取代率来代替混凝土中的天然粗集料制成再生集料混凝土;通过总孔隙率试验以及梁式试件的粘结性能试验,研究了总孔隙率的变化规律以及锚固区段内钢筋与再生集料混凝土粘结应力的分布特征。试验结果表明,再生粗集料取代率从10%增大到30%和50%时,再生混凝土的总孔隙率分别增长了1.1%和1.6%,而随着再生粗集料取代率的增加,再生集料混凝土与钢筋的粘结性能呈逐渐降低趋势。C25 grade waste concrete was prepared to produce beam bond test specimens with different recycled coarse aggregate contents.The effects of recycled coarse aggregate contents to total porosity and bond behavior between recycled coarse aggregate concrete and steel bar were studied by total porosity tests and bonding tests.The results show that the total porosity of recycled aggregate concrete increases by 1.1 % and 1.6 % respectively when recycled coarse aggregate contents increases to 30% and 50% from 10%,and the bond behavior decreases with the increase of recycled coarse aggregate contents.

关 键 词：再生混凝土 再生粗集料取代率 钢筋 粘结性能 

分 类 号：TU528[建筑科学—建筑技术科学]