Range of use:
Indoor and outdoor tennis court, silicon PU volleyball court, silicon PU basketball court, badminton court and other venues.
Construction scheme of cement based on silicon PU Stadium
First, the basic treatment of cement
A, ground grinding, clean up the ground.
B, repair damage foundation.
C, primer: basic enough after drying with special primer coating on the base surface, the principle to form a bright film after brushing the surface, lack of coating must be sufficient to date, (bottom coating effect to penetrate into the base of micro hole, after curing blockage and reinforcement of underground water and gas surface; bright film is formed ensure the foundation of micro holes completely blocked), should be avoided in the sun or the foundation of high temperature circumstance (>450C) construction to ensure the bottom paint permeability (no fog rain weather in the morning or evening suitable). Based on the surface strength of <C20 or surface loose, available primer and 1 times diluted mixture is coated on the surface of thick (enhanced permeability, increase the depth of penetration) formed bright film surface until now, the surface of the base to meet construction requirements.
D, filling: coating after curing, the direct use of elastic material to fill the joints with portable grinder polished, and elastic material in two or more of the "V" type slot fill (a fill thickness of not more than 1.0mm thick foam, affect the performance of the sealant). (as shown in figure (2))
E, leveling, repair: local water circle in the pickling process, water with not more than 5mm with elastic layer and surface layer of special sand according to 1:1 (weight ratio), plus the amount of diluent mixing and adjusted to suitable for the construction of consistency, using a ruler or scraper scraping leveling water; if the water depth more than 5mm, the application of elastic material in the thin coating of stagnant water, and then the elastic material with 40~80 mesh sand according to 1:6~8 (weight ratio) mixing evenly, smooth water in paving and compaction, thin coating (elastic material function to ensure the bonding repair material and base firmly; if the sand grain is fine with >80 eyes. The amount should be reduced accordingly) repair attention when trimming don't let the repaired side higher base, if there are higher in after curing, polishing, elastic layer construction can be carried out.
Foundation treatment:
A, to eradicate the original asphalt base.
B, re paving cement mixed soil.
C, water leveling repair: according to the new requirements of cement based processing.
Two, silicon PU material construction
Here, a basic surface cleaning:
1, clean and with water wet surface, and then coated with dilute hydrochloric acid is about 5% and scrub;
2, clean the dust high pressure field.
Here, two base expansion joints and cracks:
1, the expansion joint and the crack mouth construction into V type (an inverted horn shape);
2, thoroughly clean the inside and remove the slot wall sediments, dirt, grease etc..
Here, three basic waterproof primer Construction: more than 0.2KG/m2
Waterproof primer for single component materials, with a roll coating method directly based on the dry cement penetration after construction; theory of material dosage of 0.2kg/m2, according to the rough degree of cement base surface, the amount of material will change. Shall be fully covered (including expansion joints and cracks in the wall), adhesive curing shall be 24 hours, 24 hours after the next process of construction.
Here, four foundation joints, cracks and low-lying water repair:
1, after strictly regulate the treatment based on expansion joints, cracks qualified, using silicon elastomer buffer material PU course according to the weight ratio of adding 5% purified water directly after high speed stirring to fill a flat.
2, repair the site water, can use D68 emulsion product scraping and coating repair level.
Here, five principal elastic construction: more than or equal to 6KG/m2, three layer construction
The construction of the elastic layer: before construction according to the weight ratio of 1-3% (according to the construction of environmental temperature and humidity adjustment) add water purifying high speed stirring and instant fast construction; the construction of a smooth toothed trowel.
Construction: six, wear resistant finish surface layer: more than 0.2KG/m2, the construction of roller coating or coating layer not less than two
Silicon PU water-based paint is a two-component materials, must be in the correct proportion of provisions in the construction (topcoat: crosslinking agent =14:1, and the ratio of no uneven stirring performance will reduce the use of surface layer and the bottom adhesion) two components are fully and quickly use the instant high speed stirring. The construction method is limited to the way of rolling and coating or spraying, and the roller is used to change the direction of roller. Finish the construction temperature is lower than 5 DEG C is not suitable for construction, 10 hours after the construction of anhydrous immersion.
Case seven and site 72 hours after the completion of cleaning, maintenance can be put into use.
This guide only for the use of silicon PU materials to provide guidance in the nature of the site construction of some of the details of the site should be properly handled according to the situation.