摘要
利用加速碳化和包壳技术对碎砖骨料进行增强,制备高性能人造再生轻骨料。试验结果表明,经过碳化增强后,包壳砖骨料的筒压强度可达到14.38 MPa,吸水率可降低到12.19%。相对于裸砖骨料的筒压强度提高了41.1%~66.3%,吸水率降低了23.44%~33.47%。利用碳化包壳骨料成型的再生混凝土强度可以满足C40设计要求,其90 d抗压强度达到52 MPa。
Artificial light aggregates with high properties were prepared by reinforcing the brick aggregates with accelerated carbonation technology and shell-core structure. The cylindrical compressive strength of brick aggregates prepared from shell-core structure improved by 41.1%~66.3% comparing to the bare brick aggregates,while the water absorption rate decreased by 23.44~33.47%. After the carbonation reinforcement,the cylindrical compressive strength of brick aggregates with core-shell structure reaches 14.38 MPa,and the water absorption rate could be as low as 12.19%. Concretes made with carbonated shell-core aggregates can fulfill the design requirement of C40,and the compressive strength reaches 52 MPa at 90 d.
作者
殷伟
杨硕
刘祥达
申玲
莫立武
YIN Wei;YANG Shuo;LIU Xiangda;SHEN Ling;MO Liwu(Jiangbei New District Quality and Safety Supervision Station of Construction and Traffic Engineering in Nanjing,Nanjing 211800,China;School of Material Science and Engineering,Nanjing Tech University,Nanjing 211800,China;School of Civil Engineering,Nanjing Tech University,Nanjing 211800,China)
出处
《新型建筑材料》
北大核心
2020年第2期109-112,共4页
New Building Materials
基金
江苏省社会发展重大科技示范项目(BE2018697)
江北新区建筑垃圾资源化利用研究项目.
关键词
再生骨料
核壳结构
碳化养护
吸水率
recycled aggregates
core-shell structure
carbonation curing
water absorption rate
