一、前言混凝土冬季施工总的原则是在混凝土达到所需要的强度前,保证混凝土不遭受冻害。从节能观点出发,采用不加热的方法进行混凝土冬季施工,目前使用防冻剂是主要的方法。掺防冻剂的主要目的是使混凝土在负温下达到预期的强度,不使混凝土遭受冻害。采用此法的有我国、苏联和北欧。但对防冻剂没有一个确切的定义,仅在RILEM(国际建筑材料及结构试验研究 I. INTRODUCTION The general principle of concrete winter construction is to ensure that concrete does not suffer from freezing damage before the concrete reaches the required strength. From the viewpoint of energy conservation, concrete is used for winter construction without heating. Currently, antifreeze is the main method. The main purpose of doping with antifreeze is to make the concrete achieve the expected strength at negative temperatures without freezing the concrete. There are China, Soviet Union and Northern Europe. However, there is no definite definition of antifreeze, only in RILEM (International Building Materials and Structural Tests)