Sika A2 Reaction to Fire Classification Anti-Carbonation System - Protective Coating System for Concrete
Verified by manufacturer 1 day ago
Anti-carbonation protective coating system for concrete with an A2 reaction to fire classification.
Application
Concrete protection system.
Description
The Sika A2 Reaction to Fire Classification Anti-Carbonation System consists of the following products:
Sika MonoTop®-3020:
One-part, cementitious polymer-modified, low shrinkage surfacing/ finishing mortar. It contains recycled waste materials and can reduce the carbon footprint application activity calculations.
Features and benefits:
- Uses recycled raw materials.
- Layer thickness 1–5 mm.
- Dust reduced compared with similar materials.
- Applied up to 5 mm thick in one layer on vertical and horizontal applications.
- Good surface finishing.
- Low cracking sensitivity.
- Sulphate resistant.
- Hand and machine application (wet spray technique).
- Very good resistance to water and chloride penetration.
- Compatible with Sikagard® overcoat systems.
- Ready to mix with water.
- Does not contain chlorides or other corrosion promoting additives.
- EuroClass A1 fire rating.
- Class R3 of EN 1504-3.
- Restoration work (Principle 3, method 3,1 and 3,3 of EN 1504-9). Repair of spalling and damaged concrete in infrastructure and superstructure works.
- Preserving or restoring passivity (Principle 7, method 7,1 and 7,2 of EN 1504-9). Increasing cover with additional mortar and replacing contaminated or carbonated concrete.
Sikagard®-552 W Aquaprimer:
A one-part waterborne adhesion promoting primer for water dispersed polymer paint coatings.
Features and benefits:
- Waterborne - safer to use than solvented products.
- Water vapour permeable.
- Good adhesion to concrete.
- Single component - ready to use.
- Easy to apply.
- Compatible with Sika® Anti-Carbonation Coatings.
Sikagard®-675 W GB ElastoColor:
A one-part, plastoelastic water-dispersed coating based on styrene acrylate dispersion for the protection and enhancement of fair-faced concrete. Sikagard®-675 W GB ElastoColor can be applied over existing coatings or directly onto the concrete surfaces.
Features and benefits:
- Water vapour permeable.
- Resistant to weathering and ageing.
- Application by roller brush or spray.
- High covering power (good opacity).
- Prevents water ingress.
- High diffusion resistance to carbon dioxide (CO₂).
Complies with the requirements of EN 1504-2 as a protective coating. CE marked.
General information
Color | Beige Black Blue Brown Cream |
Material | Styrene Acrylic |
Shape | Formless |
Length | Bespoke |
Width | Bespoke |
Height | Bespoke |
Uniclass | |
CAWS | C42/345 Protective coatings for concrete |
Specification data - Concrete protective coating systems
Classification data | |
Coatings | |
Protective treatment | Sikagard®-552 W Aquaprimer. Manufacturer guidanceSikagard®-552 W Aquaprimer is a one-part water-borne adhesion promoting primer for water dispersed polymer paint coatings. Part of a system that is in scope of the requirements of EN 1504-2 as a protective coating. |
Protective coat | Sika MonoTop®-3020. Sikagard®-675 W GB ElastoColor. Guidance for specification option: Insert colour requirements separately below. Manufacturer guidance
|
Colour | Guidance for specification option: Sikagard®-675 W GB ElastoColor is a thixotropic liquid available in almost every colour shade (minimum order requirements may apply).
Manufacturer guidanceSika MonoTop®-3020 is a grey powder. Sikagard®-552 W Aquaprimer (cured appearance) is a milky white liquid. |
Composition | Chemical base: Sika MonoTop®-3020: Sulphate resistant cement, selected aggregates, additives and polymers. Sikagard® 552 W Aquaprimer: acrylate dispersion. Sikagard®-675 W GB ElastoColor: styrene acrylate dispersion. |
Density | Sikagard® 552 W Aquaprimer: ~1.0 kg/L (at 20°C). Sikagard®-675 W GB ElastoColor: ~1.42 kg/L (at 20°C). |
Reaction to fire | Sika MonoTop®-3020, to EN 13501-1: EuroClass A1. Guidance for specification option: Sikagard®-675 W GB ElastoColor, to BS EN 13501-1:2018: B-s1, d0. |
Tensile Adhesion | Sika MonoTop®-3020, to BS EN 1542:1999: ≥2.5 MPa. Sikagard®-675 W GB ElastoColor, to EN 1542: ~2.7 MPa. |
Capillary absorption | Sika MonoTop®-3020, to EN 13057: ≤0.5 kg/(m²·√h). Sikagard®-675 W GB ElastoColor, to EN 1062-3: w = 0.07 kg/(m²·√h). |
Water vapour resistance | Sikagard®-675 W GB ElastoColor, to EN ISO 7783-1 & EN ISO 7783-2: Dry film thickness: d = 270 µm; Equivalent air layer thickness: SD, H₂O = 0.59 m; Water vapour permeability: 35.6 g/m²/day; Requirements for breathability: SD, H₂O ≤5 m. |
Carbon dioxide permeability | Sika MonoTop®-3020, to EN 1062-6: <2000 µCO₂. Sikagard®-675 W GB ElastoColor, to EN ISO 7783-1 & EN 1062-6: Dry film thickness: d = 160 µm; Equivalent air layer thickness: SD, CO₂ = 2.35 m; Diffusion coefficient CO₂: µCO₂ = 1.47x 10E6; Requirements for protection: SD, CO₂ ≥50 m. |
Technical characteristics, other | Sikagard®-675 W GB ElastoColor: behaviour after artificial weathering: Pass after 2000 hours. |
Compressive strength | Sika MonoTop®-3020, to EN 12190: ~40 MPa (after 28 days). Guidance for specification option: ~8 MPa (after one day); ~20 MPa (after seven days). |
Flexural strength | Sika MonoTop®-3020, to EN 12190: ~6 MPa (after 28 days). |
Thermal compatibility | Sika MonoTop®-3020, Part 1 Freeze-Thaw to EN 13687-1: ≥1.5 MPa. |
Carbonation resistance | Sika MonoTop®-3020, to EN 13295: dk ≤ control concrete MC (0.45) |
Sustainability data
Material | Styrene Acrylic |
Literature
Sika MonoTop®-3020 - Product Data Sheet
Sikagard®-552 W Aquaprimer - Product Data Sheet
Sikagard®-675 W GB ElastoColor - Product Data Sheet
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