1前言为防止混凝土施工中发生冻害,混凝土质量控制标准(GB50164—92)规定:冬季浇筑的混凝土,应养护到具有抗冻能力的临界强度后,方可撤除养护措施;……。然而,目前主体结构冬季施工的时间较长,而且近几年冬季温度普遍偏高,混凝土冬季施工质量保证意识淡漠,温度骤降时养护措施不 1 Preface In order to prevent the occurrence of frost damage in concrete construction, the quality control standard of concrete (GB50164-92) stipulates that concrete poured in winter should be cured until the critical strength with frost resistance can be removed. However, the main structure of the current winter construction time longer, and in recent years the temperature in winter generally high, winter concrete construction quality assurance indifference, when the temperature plunge conservation measures do not