对大体积混凝土延迟钙矾石反应的评估是核电工程中对混凝土耐久性评价的重要方面。要想抑制大体积混凝土延迟钙矾石反应的发生,应针对具体环境下的特定混凝土配合比,通过开展前期模拟试验的方法来辅助分析确定避免发生DEF的具体技术要求。在任何情况下,大体积混凝土中心最高温度不宜超过80℃。 The evaluation of the delayed ettringite reaction of mass concrete is an important aspect of evaluating the durability of concrete in nuclear power engineering. In order to restrain the delay of ettringite reaction in mass concrete, the specific technical requirements for avoiding DEF should be analyzed and analyzed according to the specific concrete mix in specific environment through the method of preliminary simulation. In any case, the maximum temperature of mass concrete center should not exceed 80 ℃.