晶核型早强剂在低温条件下的水化促进作用  

Hydration Process on Crystal Nucleus Based Accelerator Under Low Temperature Environments

作　　者：冯燕芳 王伟山 郑柏存[1] FENG Yan-fang;WANG Wei-shan;ZHENG Bai-cun(East China University of Science and Technology,Shanghai 200237,China;Shanghai Sunrise Polymer Material Co.,Ltd.,Shanghai 200231,China;Shanghai Engineering Research Center of Construction Admixtures,Shanghai 200231,China)

机构地区：[1]华东理工大学,上海200237 [2]上海三瑞高分子材料股份有限公司,上海200231 [3]上海建筑外加剂工程研究中心,上海200231

出　　处：《混凝土与水泥制品》2022年第5期17-20,25,共5页China Concrete and Cement Products

基　　金：上海市科委人才计划项目(18QB1403200);上海建筑外加剂工程技术研究中心能力提升项目。

摘　　要：研究了三种低温(-3℃、0℃和5℃)环境下晶核型早强剂对水泥凝结硬化行为的影响,采用TG、XRD、SEM进行了表征,并对其机理进行了分析。结果表明,在低温条件下,晶核型早强剂可以加快水泥水化进程,提高硬化浆体的致密程度,有效缩短水泥凝结时间并提升其早期强度的发展。The influence of crystal nucleus based accelerator on setting and hardening behaviors of cement in three low temperature environments(-3℃,0℃and 5℃)was investigated,the mechanism was characterized and analyzed by TG,XRD,SEM.The results show that the hydration process of cement can be accelerated by crystal nucleus based accelerator,densification of hardened paste is improved,the setting time of cement is effectively shorten and its early strength development is enhanced.

关 键 词：早强剂 低温 晶核 强度 水化 水泥浆 

分 类 号：TU528.042.1[建筑科学—建筑技术科学]