缓释型聚羧酸减水剂的研究进展  

Progress on Controlled-release Polycarboxylate Superplasticizers

作　　者：陈晓东 唐新德 张翠珍[1] 李学凡 郭海超 CHEN Xiaodong;TANG Xinde;ZHANG Cuizhen;LI Xuefan;GUO Haichao(School of Civil Engineering,Shandong Jiaotong University,Jinan 250357,China;Institute of Intelligent Transportation,Shandong Jiaotong University,Jinan 250357,China)

机构地区：[1]山东交通学院交通土建工程学院,济南250357 [2]山东交通学院智慧交通研究院,济南250357

出　　处：《材料导报》2022年第S02期491-494,共4页Materials Reports

基　　金：山东省重点研发计划项目(2017GGX20128)。

摘　　要：缓释型聚羧酸减水剂可控制减水剂分子对水泥颗粒的分散作用进程,并在一定时间内持续分散水泥颗粒,有效缓解混凝土坍落度经时损失过快的问题,使混凝土拌和物在长时间内具备良好的工作性能、力学性能和耐久性能。本文综述了近年来缓释型聚羧酸减水剂的研究进展,分类介绍了物理缓释型、化学缓释型以及物理/化学双重缓释型聚羧酸减水剂的结构、性能及作用机理,并对其应用前景进行了展望。Controlled-release polycarboxylate superplasticizer can control the dispersion process on cement particles,and continuously disperse cement particles within a certain period of time,which can effectively overcome the problem of rapid loss of concrete slump and can endow concrete mixture with good working performance,mechanical properties and durability for a long time.In this paper,the research progress of controlled-release polycarboxylate superplasticizers in recent years is reviewed.The structure,property and mechanism of physical slow-release,chemical slow-release and physical/chemical controlled-release polycarboxylate superplasticizers are introduced.The comparison and expectation for them are conducted.

关 键 词：缓释型聚羧酸减水剂 物理缓释 化学缓释 坍落度损失 

分 类 号：TU528[建筑科学—建筑技术科学]