The main problem of winter concreting is the negative temperature, which can greatly affect the process of setting and hardening of concrete. Low temperature from 0°C to 10°C significantly slows down the process of hydration of cement. Under normal conditions and a temperature of 20 ° C, concrete gains up to 70% strength in a week, and at an air temperature of 5 °With the term of the set of vintage strength can stretch for 3-4 weeks.

The main task during winter concreting at subzero temperatures is not to let the water that is part of the concrete freeze. Care should be taken to preserve heat until the brand strength of the solution is fully achieved. At temperatures from -3 °C to 3 °With shelter is the most affordable and economical way to keep warm and get durable concrete in the cold season.

To preserve heat, it is enough to cover the laid concrete with thermal insulation material, for example, thermal insulation mats for covering concrete or PVC construction film.The thermal insulation mat is sewn from tarpaulin, foamed polyethylene and polyethylene film.

The tarpaulin has excellent wear resistance and a high degree of hygroscopicity, withstands mechanical damage. The density of the tarpaulin is 465 g/m.Foamed polyethylene also has a high density.

The material made of polymerized ethylene is resistant to temperature changes, is characterized by low moisture permeability, environmental friendliness.

For sewing mats, a polyethylene film with a thickness of 150 microns is also used. It is elastic, resistant to impact, characterized by maximum strength. The operating temperature of the construction film is from -50 ° C to 60 ° C.

Often at construction sites, a construction film with a thickness of 200 microns is used to shelter concrete. It protects concrete from wind and adverse weather conditions, prevents water evaporation.  Also, if it is not possible to constantly moisten the concrete, the surface is covered with a polymer construction film. When using additional heating with heat guns, a shelter made of PVC construction film is not used on the concrete surface, but is thrown over a temporary frame. Heat guns are placed under such a cover. At the same time, the process of concrete strength gain is accelerated.