When performing work in the winter, by pouring concrete, the existing recommendations should be followed. Standing the conditions for winter work should already be already when the average temperature on the street decreases to +5 degrees. When conducting concreting, the conditions for the concrete mixture should be provided, in which it can acquire its properties and completely harden.
To do this, you should protect the just flooded mixture from frost and prevent it from freezing. Therefore, the pouring is usually made by the formwork method, which is covered with various heater (plastic wires, mineral wool and other insulation) and does not remove it throughout the period of the concrete allotted for the complete drying of concrete. There are times when additional heating is made, using auxiliary electrical appliances.
In a large number of cases, special compounds (anti -control additives) are added to the concrete mixture, which prevent the freezing of concrete. Thanks to such additives, the solution of the solution is significantly reduced. If, with the usual pouring of concrete, this design should be given to settled for several weeks in order to continue construction work, then when pouring in the winter, these periods are doubled.