Wintering in winter: methods, characteristics, necessary measures
When you need winter concrete, the main problem is low ambient temperature, which leads to the freezing of building materials. Accordingly, wintering technology is intended to prevent the freezing of water and other materials.
Concreteing in winter conditions. For the rule
The essence of the method is that concrete cooling at 0 ° C can gain critical power during this time. Depending on this, determine the thickness and type of insulating coating material. With this method, the concrete mixture with a temperature of 20-80 ° C is placed in heated sheathing and the open surfaces are protected against cooling. Heating is not necessary because the amount of heat that is introduced into the preparation into the mixture and released during the cement interaction with water is sufficient for hardening and a critical strength set. This method is used for the concreting of massive structures. The mass index is estimated with the surface module.
Winter concrete methods
Existing methods of winter concreting are divided into two main groups: non-aggressive cementation of concrete and artificial heating of concrete from monolithic structures. Methods of concrete paving with artificial heating do not allow continuous work in winter conditions, but also intensifying the process of building concrete with concrete, reducing the construction time and increasing the level of the formwork transport.
Concrete treatment in winter conditions: thermos, heating with electricity and infrared radiation
If in winter conditions it is necessary to make concreting, they become the main problem of low temperature, which makes construction materials frost. According to SNiP 3.03.1, the conditions of winter concrete are below 5 degrees Celsius.
How to Concrete In Winter
And if the low positive temperature slows down the setting process and the strength of the concrete, then it stops completely negatively. The reason for this is the freezing of water in young concrete. The process of hydrating the cement is not possible in the absence of water. Water is a necessary component for the formation of cement stone. Cement must be in contact with water (moisture) throughout the aging period.