Paste silane for concrete
Product description
BK-1823 silane impregnating paste with an active ingredient content of 80% silane, the product can be used for protection of new concrete structures, as well as for reinforcement and repair of old concrete structures , effectively suppresses the destruction caused by various corrosive factors on reinforced concrete structures and significantly improves durability and service life of concrete structures .
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Product Features
- has high penetrating power and can penetrate concrete to a depth of 3-4 mm;
- can reduce the rate of water absorption of concrete structures more than 90% ;
- may reduce chloride ion corrosion more than 90% ;
- real waterproof and breathable products , without the formation of bubbles and peeling;
- can effectively cope with microcracks less than 0.2 mm ;
- does not change the original appearance of concrete ;
- Excellent alkali resistance and durability, protection period is 20-30 years old ;
- Particularly suitable for facade and roofing structures, with less construction loss and savings in raw material costs.
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Recommended use
It is suitable for the protection of concrete structures damaged seawater corrosion, salt spray corrosion, meltwater corrosion and freeze-thaw damage , such as port terminals, sea bridges, river bridges, hydraulic dams, urban overpasses, high-speed highway bridges, railway bridges, tunnels, airport pavements, monolithic concrete buildings, thermal power plants, nuclear power plants, wastewater treatment plants, etc.
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Technical parameters
- has high penetrating power and can penetrate concrete to a depth of 3-4 mm;
- can reduce the rate of water absorption of concrete structures more than 90% ;
- may reduce chloride ion corrosion more than 90% ;
- real waterproof and breathable products without bubbles or peeling;
- effectively copes with microcracks of the size less than 0.2 mm ;
- does not change the original appearance of concrete ;
- Excellent alkali resistance and durability, long protection period 20-30 years old ;
- Particularly suitable for facade and roofing structures, with less construction loss and savings in raw material costs.
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Recommended use
It is suitable for the protection of concrete structures damaged by seawater corrosion, salt spray corrosion, meltwater corrosion and freeze-thaw corrosion, such as port terminals, sea bridges, river bridges, hydraulic dams, urban overpasses, high-speed highway bridges, railway bridges, tunnels, airport pavements, decorative concrete buildings, thermal power plants, nuclear power plants, wastewater treatment plants, etc.
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Technical parameters
- Appearance: white paste
- Active ingredient content: approx. 80%
- Flash point: 74 ℃
- Density (25℃): about 0.90 g/cm³
- Viscosity (20℃): ≥5000 mPa s
- Hydrolyzable chloride content: ≤100 μg/mL
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The construction process
- Application method: brush, roll application, high-pressure airless spray.
- Recommended dosage: 300 g/m²
- Painting time: 1~2 times
- Interval between applications: after the first layer has dried.
- Tool cleaning: water
- Surface drying time: 2–3 hours
- Full cure: more than 7 days
- Weather suitable for construction: good vision, wind below class 4, temperature 5~40℃ .
- Does not work in the following weather conditions: rain, snow, wind force over 5, frosty weather below 0℃.
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Package
20 liters/barrel, 50 liters/barrel
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Storage and shelf life
Store in the original container at a temperature 5~45℃ , best before date 12 months .
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Construction Guide
Specific age: new structures should be built after 4 weeks of curing concrete elements, and repair work - after 2 weeks of curing .
Before impregnation with silane, it is necessary to treat the concrete surface: (a) Remove obvious defects such as honeycombs, exposed reinforcing strands, holes and cracks with cement mortar; remove surface debris and loose attachments with a steel grinding traction; (b) Remove harmful substances and contaminants such as dust and oil that do not promote silane impregnation; (c) If concrete is used with a release or smoothing agent, determine the effect of the release or smoothing agent on silane impregnation by a test spray. Otherwise, it should be completely removed before impregnation with silane. Before spraying silane, the concrete surface should be dry and the moisture content of the concrete surface should not exceed 6% .
Structural equipment: For applying paste-like material to large areas, it is recommended to use high-pressure airless sprayer , which ensures high application efficiency and reduces raw material losses, and for small areas the painting method can be used with a brush or roller .
Service: After applying silane it is necessary 24 hours without rain , natural air drying.
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Security measures
Avoid contact of this product with plants such as flowers and grass, and protect any items that should not be exposed to the solvent.
Should be worn protective glasses and gloves in accordance with the requirements during construction. In case of accidental inhalation, immediately move to a place with fresh air. In case of contact with skin, rinse immediately with water for 15 minutes ; in case of accidental contact with eyes, rinse immediately with more than 100 ml of water. 15 minutes , promptly remove contaminated clothing and shoes and seek medical attention if the condition is serious.
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Precautionary measures
The information contained in this document is based solely on our knowledge gained in the laboratory and in practice. However, since product use is generally beyond our control, we only guarantee the quality of the product itself. We reserve the right to change the instructions for this product without prior notice.