Why does properly poured concrete end up cracking
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It is very easy to cause concrete cracking if the construction or maintenance are not done correctly. What are then the five main causes of cracking concrete?
1. Problem of the proportion of cement: Some construction workers, to make construction easier, add water in order to improve the fluidity of concrete. However, this will result in an increase in water-cement ratio which leads not only in a hardening of concrete but also in cracking.
2. Transport and mixing issues: If mixing and transporting concrete takes too much time, the water in the concrete will evaporate quickly.
. This leads to a concrete that is weaker on the construction site, unable to meet construction specifications.
3. Construction speed
4. Maintenance is unreasonable. During the period of maintenance, if late watering isn't maintained, the result will be the
Later in the year, concrete will be used. Concrete is used in the future.
Concrete Surface Watering
You can water the surface of the concrete often to speed up the drying process. Concrete will shrink drastically if it is not watered. Late cracking occurs when concrete strength is decreased.
5. Environmental factors: If the environment at the construction site is relatively dry and there is high temperature, wind, or both, then the evaporation rates of the surface concrete are accelerated. This results in cracking on the surface. Concrete constructions are most likely to crack in the winter or summer because of the temperature difference.
Solution: Add a crack-preventing agent. A composite anti-cracking agents made of a variety inorganic materials can stop more than 80% foam concrete from cracking. Add 2 to 3 kilograms per cubic foot.