Because epoxy floor paint belongs to oily paint, the water content of the base floor is very high during construction, which can't be higher than 8%. Otherwise, it will lead to the problems of peeling, foaming and coating peeling after construction (refer to "The Reasons for Large Scale Peeling of Epoxy Floor Paint"). Therefore, in order to prevent the occurrence of these problems, it is necessary to detect the moisture content of the foundation ground before the floor paint construction, and how to select the detection point has become an important issue. Usually, the area of an epoxy floor paint project varies from hundreds of thousands of square meters to tens of millions of square meters. What position can we choose to accurately measure the moisture content of the base surface on such a large ground? Usually, the place with the greatest moisture content of the whole ground is chosen as the measuring point. As long as the moisture content of the place with the greatest moisture content of the base surface does not exceed the relevant standards, we can judge that the whole base surface conforms to the construction. Standard.
So which locations are the best choice for measuring moisture content of epoxy floor paint construction base? Generally, the following three locations can be selected:
1. Bottom Floor of Building
2. Close to doors, windows and exterior walls
3. Places where water had accumulated during the maintenance period
As long as the moisture content of the base surface in these places is measured within the construction requirements, it can be determined that the whole base surface can be constructed with epoxy floor paint.
Generally speaking, there are three kinds of situations that lead to excessive moisture content on the base of epoxy floor paint:
1. The building itself is not waterproof.
Some buildings did not make waterproofing layer at the beginning of construction, such as warehouse or logistics center, but for some reasons these buildings were changed into other functional buildings, because no waterproofing layer was made, then the water content of the base surface would be too high.
2. Short or not thoroughly dried base surface
A large number of practices have shown that the effect of natural air-drying after the completion of concrete base is the best, otherwise it may lead to various problems of epoxy floor paint system after completion. However, modern construction speed often can not consume a lot of time, so the use of resin materials for surface coating is becoming more and more popular.
3. Failure of Waterproof Layer
Waterproof layer itself may also fail. Although there are many reasons for its failure, it is usually due to improper painting, or the waterproof layer is damaged during painting, such as pierced by steel bars.
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