Sikagard®-705 L - Reactive Water Repellent Impregnation
Verified by manufacturer 6 days ago
A one-component low viscosity, solvent free liquid, reactive impregnation for concrete and cementitious substrates
Application
Sikagard®-705 L is used as water-repellent impregnation (hydrophobic treatment) for absorbent substrates such as concrete in civil engineering or building concrete structures subjected to heavy stress due to freeze and thaw cycles and de-icing salts and chloride attack in marine environment:
- Suitable for protection against ingress (Principle 1, method 1.1 of EN 1504-9);
- Suitable for moisture control (Principle 2, method 2.1 of EN 1504-9);
- Suitable for increasing the resistivity (Principle 8, method 8.1 of EN 1504-9).
Description
Sikagard®-705 L is a one-component low viscosity, solvent-free liquid, reactive impregnation for concrete and cementitious substrates based on silane with 99 % active ingredient.
Sikagard®-705 L complies with the highest requirements of EN 1504-2 for hydrophobic impregnation (penetration depth class II and resistance to freeze and thaw salt stresses).
Features and benefits:
- Excellent penetration.
- Fast uptake even on dense concrete.
- Economic and easy to use.
- Reduces capillary water absorption, protection against driving rain and splashing on vertical areas.
- Reduction of absorption of aggressive or deleterious agents dissolved in water (i.e. de-icing salts or chloride from marine environment).
- No change in water vapour permeability.
- Long term efficiency, deep penetration.
- Increases the resistance of concrete to freeze and thaw cycles and de-icing salts.
- Reduce corrosion even in cracked concrete.
- Retard corrosion initiation by reducing the available humidity at reinforcement bars level.
- Mitigate corrosion by preventing further chloride to migrate to reinforcement bars.
- Comply with Dutch guidelines (RWS NEN-EN 1504-2) on CEM III.
- Resistant to sea water.
- Low VOC content.
- Ready to use.
General information
Color | Clear |
Material | Silane Water-borne |
Shape | Formless |
Length | Bespoke |
Width | Bespoke |
Height | Bespoke |
Uniclass | |
CAWS | C42/345 Protective coatings for concrete |
Specification data - Water repellents
Classification data | |
Composition | Waterborne. |
Colour | Clear. Guidance for specification option: Colourless liquid. |
Composition | Alkoxy silanes (99% active ingredient). |
Density | ~0.900 kg/L (at +25°C). |
VOC content | To ASTM D 3960, ~327 g/L. |
Viscosity | ~9 mm²/s (at 25°C). |
Water vapour permeability | To EN ISO 12 572, 40 x 10³ s/m (requirement of BRO 2002: <200 x 10³ s/m). |
Capillary absorption | To EN 13580: Complies. |
Chloride ion resistance | Control (CEM II/A-LL 42.5 N; W/C = 0.53): 13.1 × 10E-12 m²/s; Treated with Sikagard®-705 L: 1.2 × 10E-12 m²/s; Control (CEM III/B 42.5 N; W/C = 0.45): 0.9 × 10E-12 m²/s; Treated with Sikagard®-705 L: 0.6 x 10E-12 m²/s. |
Technical characteristics, other | Resistance to alkalinity, to EN 13580: complies. Freeze-Thaw de-icing salt resistance, to EN 13581: complies. Penetration depth, to EN 1504-2: >10 mm (Class II), |
Sustainability data
Material | Silane Water-borne |
Literature
Sikagard®-705 L - Product Data Sheet