新型聚羧酸高效减水剂的研制  

Preparation of a new kind of polycarboxylates superplasticizer

作　　者：房娟娟[1] 于爱红[2] 逄鲁峰[3] 许斌[2] 

机构地区：[1]山东凯文科技职业学院机械工程学院,山东济南250200 [2]山东建筑大学材料学院,山东济南250101 [3]山东建筑大学土木学院,山东济南250101

出　　处：《混凝土》2010年第12期71-72,共2页Concrete

摘　　要：合成了一种新型的聚羧酸类高效减水剂。通过对净浆流动度试验和混凝土试验研究了该减水剂的分散性能。结果表明该产品是一种用量少、分散性能好、流动保持性能好,与不同水泥的相容性好、不含甲醛的高效减水剂。折固掺量为0.3%,水灰比为0.29时,水泥净浆流动度可达280 mm,且60 min内坍落度基本不变。A new kind of polycarboxylate superplasticizer has been synthesized.From the tests of fluidityof cement grout and concrete properties,it can be seen that the product has many merits including lower dosage,better dispersibility,flow-keeping ability and compatibility with different cements.Besides,it is a green admixture without formaldehyde.The fluidity of cement grout can reach as high as 280 mm at the neat copolymer usage of 0.3%,water-cement ratio 0.29 and no slump loss occurs within 60 minutes.

关 键 词：聚羧酸类高效减水剂 合成工艺 分散性能 

分 类 号：TU528.042.2[建筑科学—建筑技术科学]