高效减水剂对水泥胶砂收缩性能的影响  

Superplasticiser on shrinkage of mortar

作　　者：杨利民[1] 尚建丽[1] 杨晓东[1] 

机构地区：[1]西安建筑科技大学材料学院,陕西西安710055

出　　处：《混凝土》2006年第2期53-56,共4页Concrete

摘　　要：本文研究了高效减水剂对胶砂收缩变形性能的影响,结果表明:在不改变配比的条件下,萘系和氨基磺酸盐系高效减水剂,能显著的增加胶砂的收缩变形,萘系高效减水剂增加收缩的程度相对更大;而聚羧酸系高效减水剂并不显著增加收缩,甚至有降低收缩的作用。此外,当以最佳掺量掺入高效减水剂时,胶凝体系的收缩变形相对较小。Influence of superplasticiser on shrinkage of mortar was researched. The results indicated that superplasticiser had significant effects on shrinkage of cement mortar at the same mixing proportion, and the shrinkage increased remarkably with HJUNF - 2A, THS - 1 and ASP - L adding in mortar, while it doesn＇ t increase, even might reduce by using CABR. Furthermore, the shrinkage would have a lower level with the best dosage of superplasticiser.

关 键 词：高效减水剂 收缩 胶砂 

分 类 号：TU528.042.2[建筑科学—建筑技术科学]