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浅谈聚羧酸减水剂复配的应用

摘 要:对混凝土用聚羧酸减水剂工作性的影响因素及其规律入手,提出了改善聚羧酸减水剂工作性的可操作性措施,改变聚羧酸减水剂复配方案、增加各种辅助小料、优化其外加剂的掺量比例及消除引起不适应性的因素等,并列举了工程应用实例。

关键词:聚羧酸减水剂;缓凝剂;引气剂;适应性;解决措施;工程实例

Abstract:Starting with the influencing factors and laws of the workability of polycarboxylate superplasticizer for concrete,this paper puts forward some operable measures to improve the workability of polycarboxylate superplasticizer,such as changing the compounding scheme of polycarboxylate superplasticizer,adding various auxiliary small materials,optimizing the dosage ratio of its admixture and eliminating the factors causing inadaptability,etc.,and gives examples of engineering applications.

Keywords:Polycarboxylic acid water reducer;Retarder;Air entraining agent;Adaptability;Solutions;case study

1 概述

聚羧酸减水剂的应用推动了混凝土技术的发展,给混凝工程带来了不可估量的技术经济效益,为高性能混凝土的发展提供了持续增长空间,也对其工作性、力学性及耐久性能提出新的、更高的要求。(剩余5017字)

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