废弃玻璃集料混凝土与钢筋粘结性能试验  

Experimental study on the bond behaviour between waste recycled glass aggregate concrete and steel bar

作　　者：王凤池[1] 宋文[1] 郝建民 李想[1] 

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168 [2]中国海外集团有限公司,广东深圳518048

出　　处：《辽宁工程技术大学学报（自然科学版）》2015年第8期941-946,共6页Journal of Liaoning Technical University (Natural Science)

基　　金：沈阳市科技计划项目(F12-173-9-00);住建部科技计划项目(2010-K4-39)

摘　　要：为揭示玻璃混凝土与钢筋的粘结锚固规律,采用中心拉拔试验方法,研究分别使用粗玻璃和细玻璃取代混凝土中粗骨料和细骨料对混凝土与钢筋的粘结强度的影响.试验结果表明:废弃玻璃粗骨料混凝土试件与普通骨料混凝土试件的极限粘结强度相当;废弃玻璃细骨料混凝土试件的极限粘结应力较普通混凝土试件的极限粘结应力有很大的提高;废弃玻璃骨料钢筋混凝土具有较好的锚固延性;废弃玻璃细骨料混凝土试件中,钢筋与混凝土达到极限粘结应力时发生的相对滑移与普通骨料混凝土相近;废弃玻璃粗骨料混凝土试件中,钢筋与混凝土达到极限粘结应力时发生的相对滑移大于普通骨料混凝土.To reveal the regularity of bonding and anchoring between glass aggregate concrete and rebar, pull-out test was adopted to study the influence on bond strength of concrete and steel bars by using coarse and fine glass replacing of coarse aggregate and fine aggregate in the concrete. The test results show that the ultimate bond strength of waste recycled coarse aggregate concrete specimens is quite equal to the normal aggregate concrete specimens; the ultimate bond stress of waste recycled glass fine aggregate concrete specimen is greatly improved compared with normal concrete specimen; waste recycled glass aggregate concrete has good anchoring ductility; the relative displacement of waste recycled glass fine aggregate concrete specimen when bond stress between steel bar and concrete reaches the ultimate bond stress of similar to normal aggregate concrete; the relative displacement of waste recycled glass coarse aggregate concrete specimen when bond stress between steel bar and concrete reaches the ultimate bond stress that is more than normal aggregate concrete.

关 键 词：废弃玻璃 混凝土 拉拔试验 粘结强度 锚固延性 相对滑移 

分 类 号：TU528.57[建筑科学—建筑技术科学]