减缩型聚羧酸减水剂对水泥基材料收缩性能的影响  

Effect of shrinkage-reducing polycarboxylate superplasticizer on cement-based materials shrinkage performance

作　　者：路芳[1] 熊卫锋[1] 

机构地区：[1]北京东方雨虹防水技术股份有限公司,北京101309

出　　处：《混凝土》2014年第5期91-92,96,共3页Concrete

摘　　要：研发了一种减缩型聚羧酸减水剂,该减水剂在具有很好的减水分散性能的同时,又具有减缩、保坍能力强等功能。研究了通用型聚羧酸减水剂(polycarboxylate superplasticizer,PCE)及减缩型聚羧酸减水剂(shrinkage-reducing type polycarboxylate superplasticizer,SRPCE)对水泥基材料收缩性能的影响,包括水泥胶砂干燥收缩性能和水泥胶砂自由收缩性能。结果表明:减缩型聚羧酸减水剂可有效降低水泥胶砂的干燥收缩和自由收缩。Developed a Shrinkage-reducing polycarboxylate superplasticizer （SRPCE）,the reducing agent not only has good water- reduction and dispersion performance,but also has Shrinkage-reducing and Slump retention ability and other functions.In this paper,the effect of SRPCE and polycarboxylate superplasticizer （PCE） on cement-based materials shrinkage performance was studied, including dry shrinkage and free shrinkage of mortar.The results show that SRPCE can effectively reduce dry shrinkage and free shrinkage of mortar.

关 键 词：减缩型 干燥收缩 自由收缩 

分 类 号：TU528.042.2[建筑科学—建筑技术科学]