CONCRETE RECOMMENDATIONS IN THE COLD SEASON.

In the construction it is very important to take into account the climate, so from the planning process it is necessary to take into account that in winter changes can be made that will have a noticeable impact on the structure and details.
 
It is normal for temperatures to cause changes in the bodies, depending on the temperature, heat expansion, cold compaction, but it can also be relative since it depends on the amount of water or humidity, we see the following case; a body with a high percentage of water with the cold could expand to such a degree of drastically changing dimensions and this can cause serious conflicts in terms of the general or surrounding structure.

We are going to discuss a topic with one of the most common materials in construction, concrete or concrete that could be one of the most affected in the subject of climate change, this is because it has a higher moisture content, so It is very important to take care of the temperature balance at the moment of being prepared, it is very important that the concreting process is carried out at a temperature not lower than 5 ° C since this temperature would be its critical point.

Another one of the important aspects is to take care of the humidity balance in its preparation since it should not contain too much since this will affect in the future, the most important recommendation will be that the heating of the mixing water should not exceed 40 ° C and Care should also be taken that the cement does not come into contact with the other materials heated during the kneading if its temperature is higher than 40 ° C.

The ratio of water in the concrete should keep a minimum, only to be easily molded, the hydration process has a chemical reaction called exotherm which releases heat and heat is very important for the hardness and final strength of the material, but here it is necessary to look for the cement to be of very high quality, this will finally give it the necessary firmness but also the flexibility required for sudden changes in temperature.

The mechanisms that cause the most damage to concrete / concrete by freezing are directly related to the content of the water saturation in the materials, since this can cause it to expand enough to have ruptures in the body, these ruptures can be small but multiple, and in this way they can damage the structure in a considerable way, which can end in serious results to the point of colliding a great structure.

The water must not be more than 91% at the time of being prepared, care must be taken of the resulting porosity of the preparation, since it can store considerable quantities of liquid by cooling, when water is stored in these porosities and enter dilation due to the descent of temperature, this is the main cause of material breakage.

Some preventive measures for certain unpleasant and inconvenient structural mishaps and repairs.
• In the preparation of the mixture, the balance and quality of the cement components, especially the additives, must be taken care of, being subject to standards and specifications related to the place where it will be built.

• The final ironing should not be excessively smooth since this makes it vulnerable to freezing, mainly if it is exposed to very severe conditions of climatic changes.

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