1. Introduction
Protective coatings form the first line of defense against carbonation, chloride ingress, moisture, and UV radiation.
These are used on rehabilitated concrete surfaces, bridges, facades, podiums, and industrial floors.
2. Common Types
Type | Base | Purpose / Use Case |
Anti-Carbonation Coating | Acrylic / PU | Blocks CO₂ diffusion • Facades, RCC walls |
Silane / Siloxane | Solvent or water-based | Hydrophobic breathable layer • Exposed concrete |
Epoxy Coating | Solvent-free / High-build | Chemical-resistant surfaces • Industrial & basements |
PU Coating | Aliphatic / Aromatic | UV-resistant topcoat • Roofs, decks, podiums |
3. Key Tests & Parameters
Standard | Parameter |
EN 1062-6 | Carbon dioxide diffusion |
ASTM D1653 | Water vapor transmission |
ASTM G154 | UV resistance |
IS 15824 | External coatings |
- Consultant Guidance
- For CO₂ protection → Anti-carbonation acrylics.
- For chemical resistance → Epoxy.
- For UV & movement resistance → PU.
- For damp concrete → Cementitious coating.
- Typical DFT | 100–300 µm |
- Service Life | 7–15 years |