CASTECHREP EPT
Three-Component Solvent-Free Epoxy System
CASTECH Rep EPT is a three-component, solvent-free epoxy resin system designed for pile encapsulation, structural treatment and waterproofing. Supplied in pre-weighed, ready-to-use kits, it offers high fluidity for effortless application and deep penetration.
Overview
About
CASTECH Rep EPT is a three-component, solvent-free epoxy resin system designed for pile encapsulation, structural treatment and waterproofing. Supplied in pre-weighed, ready-to-use kits, it offers high fluidity for effortless application and deep penetration.
Typical uses
- Encapsulation of pile tops to prevent water ingress
- Waterproofing | against | capillary | action | and reinforcement corrosion
- Pourable epoxy repair for cracks and spalls
- Compatible with torch-on, self-adhesive and liquid-applied membranes
Standards
- BS 6319 (Testing of resin compositions for construction)
- ASTM C881 (Epoxy-resin-base bonding systems)
- EN 1504-5 (Protection and repair of concrete structures)
Compatibility
- Substrates: bonds to concrete, steel and primed metals when properly prepared
- Waterproofing membranes: compatible with torch-on, self-adhesive and liquid-applied systems
- Temperature range: apply between +5°C and +40°C
Benefits
Advantages
Key advantages
- 100% solvent-free – no shrinkage, eco-friendly
- Rapid hardening – minimizes downtime
- Pre-proportioned kits – ensures consistent
Technical data
| Components | Part A (Base), Part B (Hardener), Part C (Filler) |
|---|---|
| Form | Flowable mortar |
| Colour | Black |
| Mixed Density (ASTM D1475) | 2.10 ± 0.10 kg/L |
| Pot Life | 45 ± 10 minutes |
| Compressive Strength (BS 6319-2) | > 75 N/mm² (7 days) |
| Flexural Strength (BS 6319-3) | 25 N/mm² (7 days) |
| Tensile Strength (BS 6319-7) | 15 N/mm² (7 days) |
| Bond Strength (ASTM D4541) | > 2.5 N/mm² (7 days) |
| Solid Content | 100% (solvent-free) |
| Application Temperature | +5°C to +40°C |
| Water Penetration (BS EN 12390-8) | Nil |
Typical values. Refer to the TDS for full details and test conditions.
Application
Surface preparation
Ensure surfaces are dry, clean and free of grease, laitance or loose particles. Mechanically prepare concrete (hacking/grit blasting). Repair defects with CASTECH Epoxy Patch and protect exposed rebar with CASTECH Zinc Primer.
Mixing
- High mechanical strength – resists impact and vibration
- Humidity-tolerant curing – performs in damp conditions
- Chemical resistance – withstands acids, alkalis and groundwater
- Long-term durability – maintains pile integrity Pour Part B (Hardener) entirely into Part A (Base) and mix for 1 minute with a slow-speed drill. Gradually add Part C (Filler) and mix until uniform.
Application
Use leak-proof formwork. Apply within the pot life and spread evenly by mechanical means. Thickness range: 10 – 75 mm (single layer).
Coverage
0.2 m²/L at 5 mm thickness.
Limitations
- Avoid partial mixing or use in flowing water
- Pot life reduces at high temperatures (> 40°C)
- Not suitable for continuous immersion in aggressive chemicals
- Avoid application on wet or frozen surfaces
- Test compatibility when used with other epoxy or polyurethane systems
Packaging & storage
Packaging
12 L and 20 L kits (pre-weighed components).
Health & safety
PPE: Suitable protective goggles, gloves and mask must be worn. Precautions: In case of contact with eyes, rinse immediately with plenty of water; in case of contact with skin, wash off immediately with soap and water. If swallowed, seek medical attention immediately. Hazard: Regarded as non-hazardous for transportation. Disposal: Do not reuse containers. Dispose of as per local rules and regulations. Additional information: Refer to MSDS (available on request).
