核电站基础是反应堆厂房的主要支撑结构,为防止建于沿海地区的核电站出现受海水侵蚀及防止核泄漏等情况发生,对其施工裂缝控制要求非常严格。但核电站基础混凝土浇筑量大、强度高、水化热大、核电特殊性能使得施工常规降低水化热措施无法使用等,因此国内外一直采用分层分段式小体量多次浇筑方式进行施工,但这就会造成施工周期延长,并且出现裂缝。大体积混凝土收缩和温度变化在硬化过程中不可避免,但其开裂与否还受多种可控因素影响,如原材料选择、配合 The foundation of a nuclear power plant is the main supporting structure of the reactor building. To prevent nuclear power plants built in the coastal areas from being eroded by seawater and preventing nuclear leakage, the construction crack control requirements are very strict. However, the basic concrete pouring capacity of nuclear power plant is large, high strength, large hydration heat, nuclear power special features make conventional measures to reduce the use of hydration heat can not be used, etc., has been adopted at home and abroad staged small volume pouring multiple construction methods , But this will result in the construction cycle is extended, and cracks. Mass concrete shrinkage and temperature changes in the hardening process is inevitable, but its cracking or not but also by a variety of controllable factors, such as the choice of raw materials, with