一、混凝土早期受冻的函义何谓早期受冻,怎样划分混凝土的受冻过程,目前没有统一的标准,理解也很不一致。日本的洪悦郎根据混凝土受冻条件按硬化过程分为三个阶段:①新浇混凝土的受冻,即硬化前受冻;②短龄期的早期受冻;③硬化混凝土受反复冻融作用。笔者认为,按我国现行钢筋混凝土工程施 First, the meaning of early freezing of concrete What is the meaning of early freezing, how to divide the freezing process of concrete, there is no uniform standard, understanding is also very inconsistent. Japan’s Hongyuero is divided into three stages according to the freezing conditions of concrete: 1 The freezing of newly-concrete concrete is frozen before hardening; 2 It is frozen during the early period of short-term age; 3 The hardened concrete is subject to repeated freezing and thawing. The author believes that according to China’s current reinforced concrete project