温控型抗裂剂在某滨海项目大体积混凝土中的应用  

Application of Temperature-controlled Anti-cracking Agent in Mass Concrete of a Coastal Project

作　　者：刘志军 武春阳 高莹 李兴跃 朱国军 LIU Zhi-jun;WU Chun-yang;GAO Ying;LI Xing-yue;ZHU Guo-jun(CCCC Construction Group Second Engineering Co,Ltd,Nanchang 330013,China;Wuhan Sanyuan Special Building Materials Co,Ltd,Wuhan 430083,China)

机构地区：[1]中交建筑集团第二工程有限公司,南昌330013 [2]武汉三源特种建材有限责任公司,武汉430083

出　　处：《建材世界》2023年第5期19-22,共4页The World of Building Materials

基　　金：2022年河北省建设科技研究项目指导性计划(2022-2158);2022年河南省住房城乡建设科技计划项目(HNJS-2022-K24).

摘　　要：以滨海地区某项目为研究对象,采用MIDAS FEA有限元分析软件评估温控型抗裂剂(WKM)在大体积混凝土筏板中的温度和开裂风险影响。通过对现场实体进行监测,得到温度、应变数据,并通过钻芯测试实体混凝土的耐久性能。结果表明,温控型抗裂剂可以降低混凝土的早期放热速率,降低混凝土的早期开裂风险;筏板混凝土在21 d仍保持微膨胀状态,混凝土的抗硫酸盐等级≥KS 120,抗氯离子渗透性能达到RCM-Ⅳ等级,具有良好的耐久性能。It focused on a project in coastal area.MIDAS FEA finite element analysis software was used to evaluate the temperature and cracking risk of WKM in mass concrete.It obtained the temperature and strain data by monitoring the field entity.It tested the durability of solid concrete by drilling cores.The results showed that the temperature-controlled anti-cracking agent can reduce the early heat release rate of concrete.It reduced the risk of early cracking of concrete.The raft concrete remained slightly expanded at 21 d.The sulfate resistance of concrete was higher than KS 120.The chloride ion penetration resistance of concrete was RCM-IV.

关 键 词：温控型抗裂剂 大体积混凝土 有限元分析 

分 类 号：TU528[建筑科学—建筑技术科学]