缓凝剂对高贝利特硫铝酸盐水泥性能影响及机制分析  

Effect and mechanism analysis of different retarders on properties of high Belite sulfoaluminate cement

作　　者：张天成 ZHANG Tian-cheng(College of Urban Construction and Transportation,Hefei University,Hefei 230601,Anhui)

机构地区：[1]合肥大学城市建设与交通学院,安徽合肥230601

出　　处：《陇东学院学报》2025年第2期55-61,共7页Journal of Longdong University

基　　金：安徽省高等学校科学研究项目“基于功能梯度原理的PVA纤维局部增强再生混凝土柱抗震性能研究”(2022AH051798);安徽省高等学校科学研究项目“低碳变相混凝土的制备及湿热耦合环境下的传热特性研究”(2022AH051806)。

摘　　要：高贝利特硫铝酸盐会有初凝过短、水泥后期强度发展缓慢、水泥流动度不足等缺点,改进其实际应用不足,研究缓凝剂对高贝利特硫铝酸盐水泥物化性能的影响及机制分析。研究表明,缓凝剂通过降低水泥中钙的浓度和改变水化反应速率,延长了凝结时间,从而实现了控制早期强度发展的目的。其中缓凝剂也可以通过与水泥产生化学反应,产生难溶性沉淀,同时起到缓凝的作用。加入缓凝剂也可能会对水泥的孔结构造成影响,导致水泥孔结构密度更加致密。High belite sulfoaluminate has disadvantages such as short initial setting,slow development of cement strength and insufficient cement fluidity.In order to improve its practical application,it is very important to study the effect of retarder on physicochemical properties and mechanism analysis of high belite sulfoaluminate cement for better application.By reducing the concentration of calcium in cement and changing the rate of hydration reaction,the retarder prolongs the setting time,thus realizing the purpose of controlling the early strength development.Among them,retarding agent can also produce insoluble precipitation through chemical reaction with cement,and play the role of retarding.At the same time,the addition of retarder may also affect the pore structure of cement,resulting in a denser pore structure density.

关 键 词：缓凝剂 高贝利特硫铝酸盐水泥 性能影响 

分 类 号：TU5[建筑科学—建筑技术科学]