环境温度对早期混凝土墙体温度场的影响

THE CONTRIBUTION OF THE AMBIENT TEMPERATURE TO THE EARLY CONCRETE WALL′S TEMPERATURE FIELD

采用基于胶凝材料水化度的热传导方程理论分析墙体混凝土的水化温升,墙体周围环境温度作为第三类边界条件影响墙体的放热速率,分析墙体周围环境温度对于墙体早期温度场的影响。研究在昼夜温度循环以及温度突变下混凝土墙体早期温度场的变化,对早期墙体保温防止开裂提出建议。

With the thermal conduction theory based on the hydration degree of cementitious materials, it can be analyzed that the early concrete wall temperature field varies with response to the change of ambient temperature, which influences the rate of heat loss. The change of early wall temperature field in the condition of temperature induced by the day and night shift and rapid decline due to getting the cold wave, which can give advice to the early wall heat preservation to prevent cracking.