聚羧酸系超塑化剂研究进展

Progress of Polycarboxylate Supetplasticizers

回顾了聚羧酸系超塑化剂的发展历程,着重介绍了近年来的研究热点。早期研究主要集中于聚羧酸系超塑化剂分子结构对其分散作用的影响,后期更侧重于聚羧酸系超塑化剂与水泥的吸附、分散作用等机理的研究。目前,随着研究的深入及聚羧酸系超塑化剂发展的细化,许多研究者更专注于聚羧酸系超塑化剂在复杂体系中实现特定功能的研究,高保坍型、黏土抵抗型和早强型聚羧酸系超塑化剂亦因此成为近年来研究的热点和前沿课题。

The development of polycarboxylate supetplasticizers is reviewed in this paper. The recent research hot topics in polycarboxylate supetplasticizers are emphatically introduced. In earlier studies, the researchers mostly studied the effect of polycarboxylate superplasticizers＇ molecular structure on dispersion. Subsequently, more emphasis was placed on the mechanism of polycarboxylate superplasticizers＇ adsorption, dispersion effect on cement, etc. At present, with the deepening of the research and development of polycarboxylic water reducer, many researchers focus much more attention on achieving polycarboxylate superplasticizers＇ specific functions in the complicated system. Therefore, high slump-retention type, clay-resistance type and early-strength type polycarboxylate superplasticizers have become a hot spot and front-line topic in recent years.