- 目录
- 新型墙体材料与施工
- 首页
加速碳化增强再生砖骨料的制备与性能研究
作者：殷伟1，杨硕2，刘祥达2，申玲3，莫立武2
（1.南京市江北新区建设和交通工程质量与安全监督站，江苏 南京 211800；
2.南京工业大学 材料科学与工程学院，江苏 南京 211800；
3.南京工业大学 土木工程学院，江苏 南京 211800）
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。
关键词：再生骨料；核壳结构；碳化养护；吸水率
中图分类号：TU528 文献标识码：A 文章编号：1001-702X（2020）02-0109-04
Synthesis and performances of recycled brick aggregates after accelerated carbonation
YIN Wei1，YANG Shuo2，LIU Xiangda2，SHEN Ling3，MO Liwu2
（1.Jiangbei New District Quality and Safety Supervision Station of Construction and Traffic Engineering in Nanjing，
Nanjing 211800，China；2.School of Material Science and Engineering，Nanjing Tech University，Nanjing 211800，China；
3.School of Civil Engineering，Nanjing Tech University，Nanjing 211800，China）
Abstract：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.
Key words：recycled aggregates，core-shell structure，carbonation curing，water absorption rate