Anti Carbonation Coating

Anti-carbonation coating is a surface treatment primarily used to protect the concrete substrates from the ingress of contaminants such as carbon dioxide, chlorides, acid gases, water sulphates, and sulphur dioxide.

Surface Preparation: The substrate will be kept dry, clean, and free from any laitance, wax, grease, dirt, oil, or any materials that could affect the bond.All cracks and unsound concrete will be repaired before starting the application by using approved repair materials. All surfaces should be applied by high water jetting to make them ready for the primer coating.

Primer Coat: substrate temperature, moisture content, and relative humidity should be tested and recorded before the start of the primer application if the concrete substrate age is less than 14 days.Primer Siloxane Acrylic Primer is ready to use a material that requires thorough stirring with a mixing stick prior to application. Primer is a ready-for-use, single-component primer based on a silane/siloxane and an acrylic resin providing protection from rebar corrosion, efflorescence, freeze-thaw damage, water penetration, oil penetration, mold, and mildew.Apply evenly by use with brush or textured roller at a rate of Horizontal application: 0.2 – 0.4 litre/m² (or 2.5-5 m²/liter) & Vertical application: 0.1 – 0.2 liter/m².We should wait for a minimum of 12 hours after priming and before the application.The primed substrate should be sound, dry, clean, and free from dust or other contamination.

Top Coat:  We can apply Topcoat within temperature (5°C – 38°C).A first coat will be applied by an airless spray machine with a coverage of 0.3 liters/m² to achieve 150-micron dry film thickness.We should wait at least 2 to 4 hours at 35°C and 4 to 6 hours at 25°C from the application of the first coat at the same rate.A second coat will be applied at a right angle to the first coat by an airless spray machine with a coverage of 0.3 liter/m² to achieve 150-micron dry film thickness.If the overcoating time (8 hours) is exceeded, the first coat will be abraded with sandpaper prior to the application of the second layer.Total dry film thickness will be kept at 300 microns.Two coats should always be used on dark, full heavy textured surfaces and when full carbonation protection is required.