Homeliness, Building
Iron casting is an effective way to strengthen the material
Concrete construction or screed made in the yard, often have to protect from external exposure to moisture, frost and sun.
Therefore, the question arises as to how to properly strengthen the outer layer of this material, make it moisture resistant, durable and durable. To do this, apply a special technology, such as ironing concrete. This process is in many cases necessary in the construction.
The quality of this process depends on compliance with certain requirements and, first of all, the top layer of this material should not be allowed to dry out. Before ironing, it must be moist and not exposed to direct sunlight.
There are two ways to implement such a protective coating. The first is the fermentation of concrete with cement sieved on a sieve. This is a "dry" method of this process. There is also a "wet" method - sifted cement, diluted water with the addition of liquid glass or sodium aluminate. Other impurities and additives may also be present in the mixture to improve the moisture resistance and strength of the coating.
In the first case, using a dry cement, it is possible to add a powder of quartz for strength. In this way, the ironing of concrete of horizontal surfaces is performed. At the same time, the cement is poured into a fine sieve and sprinkled evenly on the fresh concrete, tapping the sieve. The specified layer should be within three millimeters.
Another method is used on surfaces from which dry cement can fall. In this case, use a "wet" method. To do this, it is necessary to sift the cement first into a container and prepare the mixture, adding water and various strengthening impurities and moisture-proof components.
The wet method is considered more water resistant and durable. It can also be used on horizontal planes of freshly laid concrete. This method is the most effective.
If the fermentation of concrete is made in a place where direct sunlight is possible, then it is better to plan the work so that it is produced after sunset, in the evening.
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