What makes the glass wool tube insulation empty?
1. The water-cement ratio of the water mixing at the construction site is not suitable, resulting in poor adhesion of the glass wool pipe insulation slurry.
Solution: Strictly control the water-cement ratio
2. The site is unevenly stirred at the site, and the adhesion of some vitrified bead pulp is insufficient to cause the insulation layer to be empty.
Solution: Properly extend the mixing time of the rubber powder by using suitable mechanical stirring. Stir the rubber powder evenly and then add it to the glass wool tube for a short time.
3. When the upper wall is constructed, the previously mixed materials have exceeded the use time and caused the insulation layer to be empty.
Solution: Mix the glass wool tube insulation slurry as soon as possible.
4, the wall treatment is not good, there is floating dust, or the wall is too fast to cause the insulation layer to be empty
Solution: Remove the floating ash, oil stains, release agent and corner debris before the construction to ensure the construction work surface is clean. If there are different release agents on the concrete wall surface, proper interface treatment is required;
5, the thickness of a single application is appropriate, too thick thickness is likely to cause debonding;
Solution: A single application thickness is appropriate. The design of glass wool tube insulation layer with thickness of 2.5cm and above is recommended to be constructed in two layers. The thickness of the first layer should not exceed 1.5cm. Pay attention to compaction and bond it to the wall. firm;
6. Before and after the sweating of the slurry, the equal construction operation disturbs the bonding surface and causes the insulation layer to be hollow.
Solution: Do not perform equal construction operations before and after the body is sweating to disturb the bonding surface.
Only by obeying these factors will it not cause this phenomenon to occur in the glass wool tube and ensure the quality of the construction.
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