超长无缝大体积混凝土筏板施工技术  

Control measures of thermal crack in seamless excessive-lengthed mat foundation

作　　者：孙成城[1] 宋建学[2] 贾承辉[2] 

机构地区：[1]洛阳工业高等专科学校建筑工程系,河南洛阳471003 [2]郑州大学土木工程学院,河南郑州450002

出　　处：《四川建筑科学研究》2007年第4期225-228,共4页Sichuan Building Science

摘　　要：基于工程实例,介绍了超长无缝大体积混凝土筏板施工技术,给出了筏板及加强带的混凝土配合比及温度裂缝的施工控制措施,并讨论了ZY膨胀剂在大体积混凝土超长无缝施工中的作用机理及具体工程应用。Based on a case study, some control measures of thermal crack in seamless excessive-lengthed mat foundation are suggested. The concrete mixture is listed in detail both for mat foundation and its strengthening joints, and the crack control strategies in concrete casting are put forward. The working mechanism of ZY-type expansive agent is analyzed, and its practical applying is outlined.

关 键 词：筏板基础 温度应力 温度裂缝 ZY膨胀剂 

分 类 号：TU755[建筑科学—建筑技术科学]