中文摘要：

为了从耐久性的角度保证冬季施工混凝土的后期性能使用要求，开展了抗压强度法和抗冻性能法下低温混凝土抗冻临界强度的研究，确定了不同评价方法下抗冻临界强度的取值范围，并探讨了评价方法影响混凝土抗冻临界强度的作用机理，为冬季施工混凝土确定安全的抗冻临界强度提供了理论支撑。

英文摘要：

In order to ensure the requirements that the post-performance of concrete in winter construction from the durability point of view. Researches on the antifreeze critical strength of low-temperature concrete with the evaluation method of compressive strength and frost resistance. It not only determines the range of antifreeze critical strength in different evaluation methods but also investigates the mechanism that evaluation methods affect the antifreeze critical strength of concrete.Thus, it provides the theoretical support to ensure the safe antifreeze critical strength in winter construction.