In areas where the average daily temperature is below -15°C, even if the molding temperature is high after concrete is poured, due to the large temperature difference between the inside and outside of the concrete, the concrete will still remain in place even if it is simply covered. It will quickly drop below 0℃. The role of antifreeze is to ensure that the concrete can withstand a certain negative temperature environment after pouring. At this low temperature, there is still enough liquid phase inside the concrete to allow cement hydration to continue without being damaged by frost heaving.
Antifreeze components are pure chemicals with the purpose of lowering the freezing point in the liquid phase. In order to maintain sufficient liquid phase at the specified negative temperature, a certain amount of antifreeze ingredients must be maintained. These substances occupy a considerable proportion in antifreeze, and this proportion changes with the required specified temperature. The lower the negative temperature, the greater the dosage.
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