近年,我国的大型、特大型工程日益增多,大体积混凝土工程也越来越多。大体积混凝土在固化过程释放的水化热会产生较大的温度变化和收缩作用。由此而产生的温度和收缩应力是导致混凝土出现裂缝的主要因素,从而影响结构的整体性、防水性和耐久性,成为结构的隐患。为此大体积混凝土在施工中必须考虑裂缝控制。 In recent years, large-scale and extra-large-scale projects have been increasing in China, and large-volume concrete projects have also become more and more. The heat of hydration released during the curing process of mass concrete produces a large temperature change and shrinkage. The resulting temperature and shrinkage stress are the main factors that cause cracks in the concrete, which affects the structural integrity, water resistance, and durability and becomes a structural hazard. For this reason, crack control must be considered in the construction of mass concrete.