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蓄热法工艺的特点是:对混凝土的组成材料预先加热,使之经过搅拌、运输和振捣后具有一定的正温度,浇筑后的混凝土用保温材料严密覆盖。利用这种预加的热量和水泥的水化热,减缓混凝土的冷却速度,保证混凝土逐渐硬化,当混凝土的温度降至0℃时可达到抗冻临界强度或预期的强度。蓄热法具有经济、简便、节能等优点。混凝土在较低温度下硬化,其最终强度损失小,耐久性较高,可获得较优质量的制品。因此蓄热法成为国内外进行混凝土冬期施工的基本方法。为了推广应用这种工艺,必须对它的基本规律有较深入的了解,并找出较
The characteristics of the thermal storage process are: preheating the constituent materials of the concrete so that it has a certain positive temperature after being stirred, transported, and vibrated, and the poured concrete is tightly covered with a thermal insulation material. Using this preheating heat and the heat of hydration of the cement, the cooling rate of the concrete is slowed, the concrete is hardened gradually, and the critical strength or expected strength of the freeze can be achieved when the temperature of the concrete falls to 0°C. The heat storage method is economical, simple, and energy-saving. The concrete is hardened at a lower temperature, the final strength loss is small, the durability is high, and a relatively high quality product can be obtained. Therefore, the thermal storage method has become the basic method for winter concrete construction at home and abroad. In order to promote the application of this process, we must have a deeper understanding of its basic laws and find out