某超长超宽地下室冬季施工采用“补偿收缩混凝土”和“综合蓄热法”相结合方法,既保证地下室质量,又降低成本。采用绝湿膨胀功能的硫铝酸钙-氧化钙类膨胀剂制备补偿收缩混凝土,解决冬季无法浇水养护难题。控制混凝土入模温度,加强保温养护,减小混凝土内外温差。现场定期抽查混凝土限制膨胀率,实时监测混凝土温升历程。 A super long and wide basement winter construction using “compensation shrinkage concrete ” and “integrated heat storage ” a combination of methods to ensure that not only the basement quality, but also reduce costs. Adopting the sulphoaluminate-calcium oxide expansive agent with expansive desiccation to prepare compensatory shrinkage concrete and solve the problem of not watering and curing in winter. Control the temperature of concrete into the mold, strengthen insulation and reduce the temperature difference between inside and outside the concrete. Check regularly check the concrete expansion at the scene, real-time monitoring of concrete temperature rise process.