自流平砂浆流动性的影响因素研究  

Study on Influencing Factors of Fluidity of Self-Leveling Mortar

作　　者：张建隽[1,2] 靳秀芝[1] 韩涛[1] 雷永胜[1] 

机构地区：[1]中北大学材料科学与工程学院,山西太原030051 [2]太原城市职业技术学院城建系,山西太原030027

出　　处：《中北大学学报（自然科学版）》2014年第5期620-624,共5页Journal of North University of China(Natural Science Edition)

基　　金：国家科技支撑计划项目(2013BAC14B05);山西省科技攻关计划项目(20120313009-3)

摘　　要：自流平砂浆的流动性直接影响着施工效率与施工质量.本文针对水灰比、减水剂、保坍剂、超细粉煤灰、可再分散乳胶粉等5个影响自流平砂浆流动性的因素进行了研究,并初步分析了各个因素影响自流平砂浆流动性的机理.结果表明:上述5个因素都对砂浆的流动性有显著的影响,减水剂、保坍剂、可再分散乳胶粉、粉煤灰在合适掺量时,在20 min其扩展度分别达到了134 mm,138 mm,144 mm和157 mm.The fluidity of the self-leveling mortar has a direct impact on the efficiency and quality of construc- tion. The factors affecting on the fluidity of the self-leveling mortar, such as water-cement ratio, water reduc- ing admixture, slump-retaining agent, redispersible polymer powder and the content of fly ash, were studied. The mechanism of the various components on improved mortar fluidity was analyzed. The results show that the five factors have significant impact on fluidity of mortar. After 20 minutes, the extended degree of self- leveling mortar up to 134 mm, 138 mm, 144 mm, 157 mm, respectively, when their dosages are appropri- ate.

关 键 词：自流平砂浆 流动性 减水剂 粉煤灰 保坍剂 可再分散乳胶粉 

分 类 号：TU588[建筑科学—建筑技术科学]