STUDY ON THE FLOW PROPERTIES OF CEMENTITIOUS ATERIALS WITH AN AMPHOTERIC COPOLYMER

摘要：

Superplasticizer is the essential component to prepare self-consolidating concrete with good workability. In this study, an amphoteric copolymer (PAD) was prepared and tested as concrete admixture. PAD was prepared from acrylamide and N, N-dimethyl-N-(3-(β-earboxylate) acryloyloxyethyl) ethanoate (DCA) through free radical polymerization. The test results on mortars indicate that this polymer could uniformly disperse cement particles and enhance the fluidity of the system. Compared to a sulfonated-based superplasticizer (SNF), PAD with proper reactant ratio and molecular weight requires less dosage to achieve good fluidity and provides better fluidity retention. Limited test data also show that PAD has better performance than SNF in terms of slump and slump retention of the resulting concrete.

关键词： amphoterie copolymer admizture mortar fluidity

作者: Wei-Hung Weng Kung-Chung Hsu

作者单位: Department of Chemistry, National Taiwan Normal University,Taiwan

会议类型: 国际会议

会议名称: 第二届自密实混凝土设计、性能及应用技术国际研讨会(2nd International Symposium on Design,Performance and Use of Self-Consolidating Concrete SCC2009-China)

会议地点: 长沙

会议语种:英文

页码: 270-276

在线出版日期: 2009-06-05（万方平台首次上网日期，不代表论文的发表时间）