减水剂对泡沫混凝土性能的影响  

The influence of water-reducing agent on performances of foamed concrete

作　　者：管文[1] 

机构地区：[1]上海市建筑科学研究院(集团)有限公司,上海200032

出　　处：《新型建筑材料》2011年第5期46-49,共4页New Building Materials

基　　金：上海市科学技术委员会重大课题(09-114)

摘　　要：通过聚羧酸减水剂、三聚氰胺减水剂和萘系减水剂在泡沫混凝土中应用效果的比较表明,萘系减水剂的综合效果最好。萘系减水剂可提高水泥的分散性及泡沫混凝土的7 d和28 d抗压强度,掺加萘系减水剂后泡沫混凝土的自然干燥收缩率降低,同时质量吸水率和体积吸水率都呈下降趋势。In this paper, polycarboxylie acid, melamin and polynaphthaene sulphonate water-reducing agent are tested respectively in foamed concrete. The result shows that polynaphthaene sulphonate water-reducing agent has the best comprehensive application effect. It can improve the dispersion of cement and foamed concrete compressive strength of 7 d and 28 d. After dosing polynaphthaene sulphonate water-reducing agent,the natural drying shrinkage of foamed concrete decreased,while mass water absorption and volume absorption showed a down trend.

关 键 词：泡沫混凝土 减水剂 孔隙形貌 抗压强度 吸水率 自然干燥收缩 

分 类 号：TU528.2[建筑科学—建筑技术科学]