Concrete Epoxy Primer for CFRP Bonding
Two-component epoxy primer for substrate preparation before carbon fiber installation.
FSE 302 — Primer Epoxy
Two-component, low-viscosity epoxy primer that penetrates and consolidates concrete and masonry substrates, effectively eliminating outgassing and providing a high-bond adhesion bridge for subsequently applied FIDSTRONG carbon fibre strengthening systems. Moisture tolerant and solvent-free with low VOC, FSE 302 can be applied to damp substrates and cures to form a durable bond to concrete: pull-off strength is ≥ 2.5 MPa with the failure in the concrete itself — the best result this test can give, because the substrate gives way before the bond does.
| Property | Value |
|---|---|
| Appearance | A: transparent; B: brown; Mixed: yellow |
| Mix Ratio | A:B = 2:1 by weight |
| Packaging | 20 kg (A) + 10 kg (B) |
| Viscosity | ≤ 600 mPa·s |
| Pot Life (23°C) | 40 min |
| Touch-Dry Time | 2 h |
| Over-coating Window (23°C) | 2–24 h |
| Service Temperature | −5°C to +40°C |
| Tensile Strength | 50 MPa |
| Shear Strength | 45 MPa |
| Bond to Concrete (ASTM C882) | ≥ 2.5 MPa (concrete failure) |
| Coverage | 0.3–0.5 kg/m² (one coat) |
Applications
- Concrete substrate sealing
- Pre-treatment for CFRP installation
- Masonry surface preparation
- Steel substrate priming
- Pore sealing before lamination
- Bridge deck preparation
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Our FSE 302 primer system ensures optimal substrate preparation for structural reinforcement. Contact our experts today for technical specifications and project support.