Concrete Release Agent KT-900
Aiddem KF-900 Isobutyl Triethoxy Silane offers excellent waterproofing performance by forming a hydrophobic layer within concrete, protecting against salt, alkali, and freeze-thaw damage. Its deep penetration provides long-term durability without altering the aesthetic appearance of the concrete.
KF-900 Isobutyl Triethoxy Silane is a colorless, transparent liquid that provides superior waterproofing and protection for concrete surfaces. It effectively blocks moisture and harmful substances while allowing internal vapor to escape, enhancing the concrete's resistance to damage from freeze-thaw cycles, salt, and alkali.
KF-900 Isobutyl Triethoxy Silane
▋Description :
KF-900 Isobutyl Triethoxy Silane is a colorless, transparent liquid based primarily on n-octyltriethoxysilane. It features fast and easy application by spraying or brushing onto clean concrete surfaces. The silane molecules quickly penetrate deep into the concrete and form a strong hydrophobic network within the capillaries. This protective layer effectively blocks external moisture and harmful substances while allowing internal water vapor and gases to escape. As a result, it significantly enhances the concrete's resistance to salt and alkali attack, freeze-thaw damage, and water ingress, thereby extending the service life of reinforced concrete structures.
▋Features :
●Waterproofing Performance: Excellent hydrophobic and waterproof properties. The unique small-molecule structure penetrates cementitious surfaces and reacts with moisture in the air and substrate under acidic or alkaline conditions to form a durable and environmentally friendly waterproof layer.
●Long-Term Protection: Provides long-lasting protection against corrosion, cracking, spalling, and mold caused by water penetration, UV exposure, acid rain, deicing salts, and seawater. Deep penetration greatly extends the protection period.
●Strong Penetration: Penetration depth of 5–10 mm. Effectively reduces water absorption and provides waterproof, chloride-resistant, and UV-resistant protection while maintaining breathability. Requires only a small amount for effective coverage.
●Aesthetic Preservation: Does not alter the original appearance of the structure. Greatly reduces damage from chloride intrusion, freeze-thaw cycles, steel corrosion, and mold, enhancing weather resistance—especially suitable for decorative concrete surfaces.
●Chemical Resistance: Excellent resistance to chemicals, weathering, abrasion, and stains, offering a self-cleaning effect. In newly poured alkaline concrete, the reaction is accelerated, quickly forming the hydrophobic layer.
●Breath Ability: Significantly reduces capillary water absorption while maintaining vapor permeability, preventing external moisture and harmful substances from entering, and allowing internal moisture and gases to escape.
▋Application :
●Durability Protection for New and Old Concrete;
●Repair of Fine Cracks;
●Protection for Concrete Structures in Seawater, Salt Fog, Deicing Agent Corrosion, or Freeze-Thaw Environments (e.g., harbor docks, high-grade road bridges, tunnels, airport runways, etc.).
▋Product data ：
Item
KF-900 Isobutyl Triethoxy Silane
Concrete Sample Strength
C30
Coating Amount (g/m²)
≥600 (Coating amount for two applications)
Silane Content (9%)
≥98
Appearance
Colorless transparent liquid
Density (g/cm³)
0.9
pH
pH 7-8
Penetration Depth (mm)
Penetration Depth ≥6 mm
Water Absorption Reduction Rate (%)
Water Absorption Reduction Rate ≥90%
Chloride Absorption Reduction Rate (%)
Chloride Absorption Reduction Rate ≥90%
Alkali Resistance (28 days in 10% alkali solution)
No blistering, peeling, or cracking on the surface of the sample
Freeze Resistance (-20°C to +25°C, 25 cycles)
No cracking or peeling, no significant changes
Concrete Sample Strength
C30
Coating Amount (g/m²)
≥600 (Coating amount for two applications)
▋Usage Guidelines：
Construction Method
Brushing, rolling, spraying
Substrate Requirements
Concrete surface should be dust-free and dry - surface moisture content
(from surface to 20 mm depth) ≤ 4wt%
Recommended Application Amount
600 g/m² (dosage for two coats)
Number of Coats
1-2 coats
Recoat Interval
After the previous coat has dried
Surface Drying Time
6 hours
Storage Temperature
-10 to 40°C
Application Temperature
Ambient temperature 5°C-40°C / no strong winds / no intense vibrations
Packaging Specifications
Packaging available in 25L, 200L, and 1000L sizes according to customer needs
Storage and Shelf Life
Store in a cool, ventilated, dry place away from light, moisture, and fire.
Ensure the barrel lid is properly sealed to effectively block air.
The shelf life of the product in its original packaging is one year
Precautions
Concrete should be immersed at least four weeks after production,
and repair work should be carried out after two weeks of curing to prevent cement setting from being affected.
▋Pack size :
● 20KG/1,000KG per drum.
▋Precautions :
● Storage period is 1 year. Store in a cool, well-ventilated place. Protect from freezing, direct sunlight, and rain.
