基于建筑垃圾再生微粉制备的免烧人造轻质骨料及其应用  

Lightweight Non-combustible Artificial Aggregate Prepared from Construction Waste Recycled Micro-powder and Its Application

作　　者：王思梅 李亚楠 刘德娥 冯阳 荣辉 WANG Simei;LI Ya'nan;LIU Dee;FENG Yang;RONG Hui(College of Materials Science and Engineering,Tianjin Chengjian University,Tianjin 300384;Tianjin Key Laboratory of Building Green Functional Materials,Tianjin Chengjian University,Tianjin 300384,China)

机构地区：[1]天津城建大学材料科学与工程学院,天津300384 [2]天津城建大学天津市建筑绿色功能材料重点实验室,天津300384

出　　处：《广州化工》2024年第21期62-67,共6页GuangZhou Chemical Industry

基　　金：国家重点研发计划项目资助(2023YFC38061000)。

摘　　要：针对建筑垃圾再生微粉利用率低的现状,本文将再生微粉替代水泥,研究了再生微粉替代水泥率和水灰比对人造骨料性能的影响规律,在上述基础上,将人造骨料应用到混凝土中,并研究泡沫掺量对人造骨料混凝土性能的影响规律。研究结果表明:(1)再生微粉代替水泥率50%,水灰比为0.41,制备出的人造骨料堆积密度983 kg/m^(3)、筒压强度8.3 MPa、吸水率15%;(2)随着泡沫掺量的增加,人造骨料混凝土的孔隙率显著上升,孔隙率的提高使得干密度、筒压强度、导热系数大幅度下降,吸水率大幅度上升。Aiming at the current situation of low utilization rate of recycled micro-powder of construction waste,recycled micro-powder was used to replace cement,the effect of reclaimed micro-powder on cement replacement rate and water-cement ratio on the properties of artificial aggregate was studied.On the basis of the above,artificial aggregate was applied to concrete,and the effect of foam content on the performance of artificial aggregate concrete was studied.The research results showed that:(1) the regenerated micro-powder replaces cement with 50%,the water-cement ratio was 0.41,and the prepared artificial aggregate had a packing density of 983 kg/m^(3),barrel compression strength of 8.3 MPa,and water absorption of 15%.(2) With the increase of foam content,the porosity of artificial aggregate concrete increased significantly.The increase of porosity makes the dry density,cylinder compression strength,thermal conductivity decrease significantly,and water absorption increase significantly.

关 键 词：再生微粉 人造骨料 人造骨料混凝土 

分 类 号：TU525.9[建筑科学—建筑技术科学]