Why does the synthetic athletic track and sports flooring produce bubbles after construction?
In the construction process of polyurethane materials, each construction process needs to be proportioned and constructed according to the manufacturer's requirements. Once it deviates from the manufacturer's construction process, it is likely to cause many problems in the whole site. For example, the PU tartan track and the silicon PU sports field blistered after application.
The reasons are as follows:
1. High air humidity during construction
During the construction period, due to the rush period, the dew was not dry in the morning, the construction was carried out under the condition of high air humidity in the southern rainy season, and the construction time was not well controlled, resulting in high water content in the construction conditions at that time. Generally, there was no problem on the day of construction, and the next day After sun exposure, the whole field will bubble. The size of the bubble depends on the amount of water vapor. The larger the water vapor, the larger the bubble.
2. The material itself has high water content
When purchasing raw materials, it is necessary to purchase products that meet the required national standards. The first pass has effectively controlled the excess water content, improved the production process during production, vacuumed the materials, and performed the second reaction purification process. Achieve the goal that the material does not contain moisture when leaving the factory and is environmentally friendly.During the transportation and onsite storage of materials, the packaging may be damaged or cracked to cause water or moisture. Therefore, the packaging barrels must be carefully inspected or sample tests on site must be carried out before construction. Large-scale construction can only be carried out after the test is correct.
Because the moisture content of the material exceeds the standard when it leaves the factory, it causes the entire field to bubble. The size of the bubble depends on the amount of water vapor.
Part of the packaging barrel damage is caused by local blistering. The size of the blisters depends on the amount of water vapor. The larger the water vapor, the larger the bubble.
3. High basic moisture content
The base water content is high. The new cement foundation was not maintained for 28 days as required, and the new asphalt foundation was not maintained for 18 days as required, which caused the foundation to not dry out. After the polyurethane construction, the surface of the foundation was sealed, and the water vapor in the foundation could not get out, causing air bubbles.
Or even if the well-maintained foundation and the old foundation, the foundation surface is dry due to rain or greening and watering, but it is not completely exposed to the sun. In fact, the inner layer has a high water content and causes blistering. The water content is higher in low-lying areas of stagnant water, and the blistering is more serious. Generally, there is no problem on the day of construction. The next day after sun exposure, the whole field will bubble. The size of the bubble depends on the amount of water vapor. The larger the water vapor, the larger the bubble.
Foshan GRK Commercial co ltd for sports and commercial flooring in China.
4. The filling material has high moisture content
During construction, leveling needs to be controlled, and thinner has to be added. If the purity of the thinner is not high, and the water content is high, it will cause the site to foam.
During construction, it is necessary to increase the thickness or hardness or wear resistance, and it is necessary to add fillers, such as: rubber powder, rubber granule, quartz sand, aggregates, etc. These fillers, such as wet or mildew, will cause high water content and cause the site to rise. bubble. The size of the bubble depends on the amount of water vapor, the bigger the water vapor, the bigger the bubble.