When pouring concrete in winter, it is generally below -5 degrees Celsius, so construction is not recommended. Of course, if the progress is tight, measures such as adding additives and preheating aggregate can be added, and attention should be paid to the maintenance after pouring. When pouring concrete indoors, the temperature is generally not too low, but concrete pays more attention to maintenance.

Of course, the temperature control will be different with different pouring positions. If it is mass concrete, the temperature difference between the core and the outside is generally controlled at plus or minus 25 degrees Celsius.

Because winter construction needs thermal insulation covering, which consumes a lot of heat energy and increases the project cost, we should try to avoid site leveling, foundation treatment, outdoor decoration, roof waterproofing, high-altitude pouring concrete and other projects.

Moreover, in the process of concrete mixing, attention should be paid to the addition of water to reduce the temperature of concrete. It is necessary to reduce the pouring thickness of concrete, which is more convenient for concrete to dissipate heat well. Under special circumstances, it is necessary to add cooling methods inside the concrete to ensure the crack resistance of the concrete.

Secondly, in the construction process, don't ignore the concrete stacking, mixing methods and concrete pouring process. When the temperature is high, the watering measures for concrete should be strengthened, and when the temperature is low, the surface thermal insulation measures for concrete should be strengthened to increase the crack resistance of concrete and reduce the phenomenon of concrete cracks.