my country's climate and temperature changes: from the north of the yangtze river to the south of the yellow river, although the temperature can drop below 5℃, it is basically above 0℃. in winter construction, only early strengthening agent is added that is to say, the quality can be guaranteed. north of the yellow river, the temperature will be below 0°c for several months, and antifreeze is required for winter construction. in north and northwest china, where the minimum temperature is above -10°c, use early-strength antifreeze. in the northeastern region of inner mongolia and xinjiang, the winter temperature is often below -10°c. antifreeze must be used for concrete construction in winter.
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