高保坍型聚羧酸系高性能减水剂的研制及性能  

Preparation and performance of polycarboxylate superplasticizer with high slump retention capability

作　　者：陈国新[1] 杜志芹[1] 沈燕平[1] 徐唯唯[1] 杨日[1] 祝烨然[1] 

机构地区：[1]南京水利科学研究院瑞迪高新技术公司,江苏南京210024

出　　处：《新型建筑材料》2012年第3期81-82,88,共3页New Building Materials

摘　　要：研究开发了一种高保坍型聚羧酸系高性能减水剂,能够有效减小新拌混凝土坍落度损失。通过混凝土试验表明,合成的高保坍型聚羧酸系高性能减水剂TB在低掺量下即具有优异的坍落度保持性能,水泥适应性好,在中、小坍落度混凝土中使用依然具有良好的保坍性能,但减水率略低于普通聚羧酸系减水剂,两者复掺使用则综合性能良好。A new type of polycarboxylate superplasticizer with high slump retention capability was prepared which can reduce the slump loss of concrete mixture. The results of concrete test show that the polycarboxylate superplasticizer we prepared （TB） has good cement compatibility and excellent slump retention capability even in low dosage, and its slump retention capability is also excellent in concrete with small slump. But its water reducing rate is slightly less than ordinary pelycarboxylate superplasticizer, which can be compensated by blending these superplasticizers mentioned.

关 键 词：聚羧酸系减水剂 保坍性 合成 混凝土 

分 类 号：TU528.042.2[建筑科学—建筑技术科学]