RELATED MATERIALS
- EPOMAX-EK: Epoxy putty.
- EPOMAX-L20: Injection resin for cracks 0.1-1.0 mm wide.
- EPOMAX-L10: Injection resin for cracks 0.5-3.0 mm wide.
- DUREBOND: Epoxy resin for cracks wider than 3 mm.

I. NATURE OF THE PROBLEM – REQUIREMENTS
Cracks in concrete elements undermine the monolithic character and strength of the structural element. To restore monolithic behavior, the crack must be filled with a material that bonds strongly to concrete and has high mechanical strength and sealing ability. The resin must also have the appropriate viscosity to penetrate the crack width.

II. SOLUTION
For cracks 0.1–1.0 mm wide use EPOMAX-L20 injection resin combined with sealing of the crack surface using EPOMAX-EK epoxy putty. For cracks 0.5–3.0 mm wide use EPOMAX-L10 resin with EPOMAX-EK putty. For cracks wider than 3 mm use DUREBOND epoxy resin with EPOMAX-EK putty. All these resins develop high mechanical strength, strong adhesion and sealing performance.

III. APPLICATION
1. Remove plaster and thoroughly clean the crack. Rake out loose material and widen the crack slightly to provide a fresh surface.
2. Seal the crack at the surface with EPOMAX-EK epoxy putty. Fix plastic injection nozzles in the putty at intervals of about 20 cm along the crack and allow the putty to harden.
3. Prepare the appropriate resin by thoroughly mixing components A and B. Inject the resin using a pressure pot or manual pump. Start from the lowest nozzle and inject until resin emerges from the next nozzle; then plug the first nozzle and continue with the next one.
4. Continue sequentially until the crack is completely filled along its length. The following day remove the nozzles, grind off any protruding putty and restore the plaster.

IV. REMARKS
- Use two people to operate the injection equipment safely.
- Mix the two epoxy components thoroughly, respecting the recommended mixing ratio. Do not mix inside the pressure pot.
- Pot life decreases at higher temperatures; avoid delays during injection.
- Clean equipment and tools with SM-12 solvent immediately after use.
- Protect resins from moisture until they have cured; do not apply below +5 °C.
- Wear gloves and goggles and follow safety instructions on the products.
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