聚合铝改性再生胶凝材料力学性质与微结构  

Mechanical Property and Microstructure of Regenerated Cementitious Materials with Poly-aluminum

作　　者：陈伟[1] 田健[2] 郭东[3] 彭自强[4] 李秋[1] 李博[2] 

机构地区：[1]武汉理工大学硅酸盐建筑材料国家重点实验室,武汉430070 [2]武汉理工大学材料科学与工程学院,武汉430070 [3]海军工程设计研究院,北京100000 [4]武汉理工大学建筑设计研究院,武汉430070

出　　处：《硅酸盐通报》2017年第9期3094-3098,3104,共6页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金(51672199);中央高校自主创新研究基金(2017II10X2);武汉市建设科技项目(201542)

摘　　要：采用800℃脱水净浆模拟废弃混凝土中的胶质组分,与矿渣粉复合制成再生胶凝材料,以聚合氯化铝为添加剂,采用抗压强度测试、XRD分析、TG-DSC分析、扫描电镜等方法研究了再生胶凝材料的水化产物微结构和砂浆力学性能,对再生胶凝材料的水化过程及聚合氯化铝的作用机理进行了分析研究。结果表明掺加2%聚合氯化铝后,生成新的水化产物Friedel盐,胶凝材料水化产物数量增加,水泥浆与砂的粘结界面密实程度提高。A method using waste concrete by combining dehydrated paste and slag at 800 ℃ to form new cementitious material,and found a kind of poly-aluminum chloride（ PACl） additive that can significantly improve the mechanical properties of cementitious materials was provided. The mechanism of polyaluminum chloride and hydration process of cementitious materials through compressive strength test,XRD,TG-DSC,SEM analysis were studied. The results show that new hydration product Friedel ＇s is generated when 2% poly-aluminum chloride is incorporated,and the amount of hydration products is increased. The density of bonding interface between cement slurry and sand increases.

关 键 词：再生胶凝材料 聚合氯化铝 抗压强度 粘结界面 

分 类 号：TU528.09[建筑科学—建筑技术科学]