Effects of polycarboxylate-type superplasticizer on fluidity and hydration behavior of cement paste

被引：51
|
作者：
Shin, Jin-Yong [1 ]
Hong, Ji-Sook [2 ]
Suh, Jeong-Kwon [2 ]
Lee, Young-Seak [3 ]
机构：
[1] Korea Inst Construct Mat, Reliabil Assessment Ctr, Seosan 356874, South Korea
[2] Korea Res Inst Chem Technol, Taejon 305600, South Korea
[3] Chungnam Natl Univ, Dep Fine Chem Engn & Chem, Taejon 305764, South Korea
来源：
KOREAN JOURNAL OF CHEMICAL ENGINEERING | 2008年 / 25卷 / 06期
关键词：
Polycarboxylate (PC); Superplasticizer; Chemical Structure; Slump; Hydration;
D O I：
10.1007/s11814-008-0255-3
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Polyearboxylate (PC)-type superplasticizers were synthesized with different average molecular weight of polyethylene oxide (PEO) graft groups, the molar ratios of graft group to carboxylic group, and then the chemical structure, polymerization condition, and physical and chemical properties were analyzed. In order to evaluate the effects Of PC-type superplasticizers in cement paste, the adsorption, the initial plasticity and Slump retention characteristics and the degree of hydration reaction were investigated. As the average molecular weight of graft group decreased and molar ratio increased, the conversion rate to copolymers, the adsorption amount of PC-type superplasticizer on cement particles improved; on the other land, the hydration reaction was delayed.
引用
收藏
页码：1553 / 1561
页数：9
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