Repair Systems
Epoxy laminating resins
2-part epoxy laminating and impregnation resin for CFRP — technical reference for reinforcement corrosion in Australian remedial building practice. Covers system selection, product comparisons, and brand equivalents.
What is epoxy laminating resins?
Epoxy laminating resins are the structural bonding matrix used in CFRP strengthening systems, applied between the prepared concrete substrate and the carbon fibre laminate or fabric to ensure full composite action is achieved. The resin must simultaneously wet out the fibre reinforcement and bond to the concrete surface — it is the critical interface between two very different materials and must be compatible with both the CFRP product and the concrete. Applied with notched trowels or rollers to achieve a controlled bond-line thickness, the resin must be correctly metered and mixed within its open time; temperature significantly affects working life and cure rate. Products are system-specific — they are not interchangeable between CFRP brands or systems, and must be used as specified in the engineer's repair scheme documentation. The complete laminate system is then covered with a top coat resin for protection.
Product Reference
Scroll right to see all brands. Use each card's TDS link for verified specifications before specifying on any project.
Sika Sikadur-300
2-part epoxy impregnation and laminating resin for CFRP, kit
System Description
Prime concrete first. Apply resin, embed CFRP strip, apply second resin coat. Control temperature 10-35 deg C.
Technical Properties
- Specifically formulated for CFRP bonding — ensures correct chemical key to fibre and concrete
- Viscosity engineered for correct fibre wet-out and inter-laminar bond
Limitations
- Short working life — typically 30–60 min at 20°C, faster in hot weather
- Not interchangeable between CFRP system brands — use the specified matched system only
PROCUREMENT SOURCES
System Description
Prime concrete first. Apply resin, embed CFRP strip, apply second resin coat. Control temperature 10-35 deg C.
Technical Properties
- Specifically formulated for CFRP bonding — ensures correct chemical key to fibre and concrete
- Viscosity engineered for correct fibre wet-out and inter-laminar bond
Limitations
- Short working life — typically 30–60 min at 20°C, faster in hot weather
- Not interchangeable between CFRP system brands — use the specified matched system only
PROCUREMENT SOURCES
Fosroc Nitowrap 410
2-part epoxy laminating resin for CFRP strengthening systems, kit
System Description
Prime concrete first. Apply resin, embed CFRP strip, apply second resin coat. Control temperature 10-35 deg C.
Technical Properties
- Specifically formulated for CFRP bonding — ensures correct chemical key to fibre and concrete
- Viscosity engineered for correct fibre wet-out and inter-laminar bond
Limitations
- Short working life — typically 30–60 min at 20°C, faster in hot weather
- Not interchangeable between CFRP system brands — use the specified matched system only
PROCUREMENT SOURCES
Fosroc Nitowrap 410
2-part epoxy laminating resin for CFRP systems (via Parchem), kit
System Description
Prime concrete first. Apply resin, embed CFRP strip, apply second resin coat. Control temperature 10-35 deg C.
Technical Properties
- Specifically formulated for CFRP bonding — ensures correct chemical key to fibre and concrete
- Viscosity engineered for correct fibre wet-out and inter-laminar bond
Limitations
- Short working life — typically 30–60 min at 20°C, faster in hot weather
- Not interchangeable between CFRP system brands — use the specified matched system only
PROCUREMENT SOURCES
Brand Equivalents
Side-by-side view of equivalent products across all major brands.
| Material | Ardex | Sika | Fosroc | Tremco / Other | Parchem / Mapei |
|---|---|---|---|---|---|
| Epoxy laminating resin (CFRP bonding) | Ardex | Sika Sikadur-300 | Fosroc Nitowrap 410 | — | Fosroc Nitowrap 410 |
Disclaimer
Information is general only. Product selection must be confirmed against project requirements, substrate condition, exposure class, manufacturer technical data sheets, NCC requirements, Australian Standards (including AS 3600), and consultant or structural engineer specifications. Do not rely on this reference as a substitute for professional engineering advice.
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