再生微粉对碱激发胶凝材料性能的影响  

Effect of Recycled Micro Powder on Properties of Alkali-activated Cementitious Materials

作　　者：李飞[1,2] 李威翰 卢亚 束伟农 侯莉[2] 周理安 LI Fei;LI Weihan;LU Ya;SHU Weinong;HOU Li;ZHOU Lian(Beijing University Of Civil Engineering And Architecture Beijing Energy Conservation&Sustainable Urban and Rural Development Provincial and Ministry Co-construction Collaboration Innovation Center,Beijing 100044,China;Beijing University of Civil Engineering and Architecture Science Park Development Co.,Ltd.,Beijing 100044,China;Beijing Institute of Architectural Design,Beijing 100044,China)

机构地区：[1]北京建筑大学,北京节能减排与城乡可持续发展省部共建协同创新中心,北京100044 [2]北京北建大科技园发展有限公司,北京100044 [3]北京市建筑设计研究院有限公司,北京100044

出　　处：《材料科学与工程学报》2023年第4期583-588,596,共7页Journal of Materials Science and Engineering

基　　金：北京市西城区财经科技专项资助项目(XCSTS-TI2022-12);国家重点研发计划资助项目(2017YFC0703300)。

摘　　要：以水玻璃与氢氧化钠作为激发剂,利用建筑垃圾再生微粉制备碱激发胶凝材料。研究再生微粉掺量、激发剂掺量(以固含量计)以及激发剂模数对碱激发胶凝材料的工作性能、力学性能和干燥收缩的影响。研究表明:在再生微粉掺量≤40%,激发剂掺量16%,激发剂模数1.2时,碱激发胶凝材料具有较好的工作性和抗压强度,而再生微粉的“微集料”效应对碱激发胶凝材料的干燥收缩有较强的抑制作用。Alkali-activated cementitious materials were prepared by using water glass and sodium hydroxide as activators and recycled micro powder of construction waste.The effects of recycled micro powder content,activator content(based on solid content)and activator modulus on the workability,mechanical properties and shrinkage of alkali-activated cementitious materials were studied.The controlled workability and required strength were got while the content of recycled micro powder was less than 40%,the content of activator was 16%and the modulus of activator was 1.2.It is shown that the“micro aggregate”effect of recycled micro powder has a strong inhibitory on the shrinkage of alkali-activated cementitious materials.

关 键 词：再生微粉 碱激发胶凝材料 工作性能 力学性能 收缩 

分 类 号：TB332[一般工业技术—材料科学与工程]