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为了使新搅拌的混凝土具有一定的温度,以便使其在达到足够强度前能进行一定程度的凝固和硬化,避免冻坏;或者在制作混凝土构件时,加速混凝土的凝固和硬化以减少占模时间,从而加快模子的周转,曾试用过预热拌合水,例如将水加热到90℃,但是效果很小。对骨料如砂、石等进行加热证明更为有效,但是迄今为止上述材料的加热是在使用前在存放的料仓或堆置场进行的。骨料加热广泛采用的方法是将蒸汽通过盛有骨料的料仓或堆置场,蒸汽在冷料上冷
In order to make the newly-mixed concrete have a certain temperature, so that it can achieve a certain degree of solidification and hardening before reaching sufficient strength to avoid freezing; or in the production of concrete components, accelerate the solidification and hardening of the concrete to reduce the die time In order to speed up the turnover of the mold, preheated mixing water was tried, for example, heating the water to 90°C, but the effect was very small. The heating of aggregates such as sand, stone, etc. proves to be more effective, but the heating of the above materials to date has been carried out in a stored silo or yard before use. The most widely used method for aggregate heating is to pass steam through silos or storage yards where aggregates are present, and steam is cold on the cold.