砖替率对再生粗骨料的性能影响试验研究  

Brick for rate of experimental study on the influence on the performance of recycled coarse aggregate

作　　者：张明明[1] 王社良[1,2] 张世民[1] 张博[2] 

机构地区：[1]西京学院土木工程学院,陕西西安710123 [2]西安建筑科技大学土木工程学院,陕西西安710055

出　　处：《混凝土》2017年第11期91-93,99,共4页Concrete

基　　金：西京学院校基金(XJ160128);国家自然科学基金(51178388;51008245;51678480);陕西省教育厅重点实验室科研计划项目(11JS059;12JS055);陕西省科技统筹创新工程计划(2013SZS01-Z02;2013SZS01-K01);陕西省攻关项目(2014K06-34)

摘　　要：将建筑垃圾中的废砖块和废混凝土加工后,选择5~31.5 mm粒径范围内的天然碎石、再生混凝土和再生砖粒作为混凝土的骨料,分别以砖粒含量0、10%、20%、30%、40%、50%、60%的取代率,部分替代天然骨料和再生混凝土骨料,均匀拌和后形成试验用混凝土骨料。通过对比试验,研究了砖粒含量对拌和后试验用再生粗骨料物理力学性能的影响,探讨了其影响的一般规律。研究结果表明:随着砖粒含量的增加,取代率越高,骨料的表观密度越小,吸水率越大,压碎指标越高。After processing the waste bricks and waste concrete in the construction waste,choose the 5~31.5 mm size range of natural stone,recycled concrete and recycled brick particle as concrete aggregate,respectively use the brick particle content as a replace rate of0,10%,20%,30%,40%,50%,60% to partial replace natural aggregate and recycled concrete aggregate,forming test for concrete aggregate after uniform mixing.Through the contrast experiment,studied the effects of brick particle content on the physical and mechanical properties of the mixture of recycled coarse aggregate after test,discussed the general law of the influence.The results show that with the increase rate of brick grain content,the replacement rate the water absorption rate and the crushing index will be higher,the apparent density of aggregate gets smaller.

关 键 词：吸水率 表观密度 压碎值指标 再生砖粒 再生骨料 

分 类 号：TU528.041[建筑科学—建筑技术科学]