高效减水剂与缓凝剂复合对水泥净浆、砂浆性能的影响  

Effect of High efficiency water reducing agent Composited Retarder on Paste, mortar of cement

作　　者：边卫秀 兰英静[2] 王楠[2] 

机构地区：[1]包头市建设工程质量检测试验中心,包头014010 [2]内蒙古科技大学,包头014010

出　　处：《中国包装科技博览（混凝土技术）》2012年第1期34-38,共5页China Science and Technology Review

摘　　要：本文通过实验研究了高效减水剂与缓凝剂复合后对不同水泥的适应性。测定了缓凝剂对净浆流动度、砂浆强度以及对试件干缩的影响效果。研究结果表明：加入缓凝剂后净浆流动度均有不同程度的提高，并有效降低了净浆15分钟的流动度损失；适宜掺量时能提高砂浆28天的强度；净浆中加入缓凝剂后在潮湿环境中养护不会增加试件的收缩。该项研究为今后的实际工程应用提供了可靠的技术根据。The experiment study the adaptation between the high Water Reducer and different Retarder. Measure paste fluidity and cement mortar strength of different retarder. Compare drying shrinkages of mortar. The study shows that： Retarder in different content can increase paste fluidity in different levels; Retarder in a appropriate content can increase strength of mortar; Retarder have no effect of drying shrinkage in the humid environment. The study can provide reliable technical basis for the practical engineering.

关 键 词：减水剂 缓凝剂 流动度 强度 收缩 

分 类 号：TU528.042[建筑科学—建筑技术科学]