RELATED MATERIALS:
- EPOMAX-EK two-component epoxy putty
- EPOMAX-L20 two-component epoxy injection resin for cracks 0.1–1.0 mm wide
- EPOMAX-L10 two-component epoxy injection resin for cracks 0.5–3.0 mm wide
I. NATURE OF THE PROBLEM – REQUIREMENTS
Structural elements that have cracked can be strengthened by welding thin metal plates onto their surfaces. The repair system must ensure good bonding between plate and concrete, fill the space between them, and transfer stresses without causing new cracks.
II. SOLUTION
Use thin stainless steel plates 1–1.5 mm thick. Bond the plate to the concrete using injectable epoxy resins: EPOMAX-L10 for a space of 0.1–1 mm or EPOMAX-L20 for 0.5–3 mm, together with EPOMAX-EK epoxy putty to seal edges and form injection ports. Mechanical fixation with nails or bolts holds the plate while the resin cures.
III. APPLICATION
1. Preparation:
- Remove any existing plaster from the area where the plate will be installed.
- Grind and smooth the concrete surface and clean it thoroughly with pressurised water or compressed air.
- Sandblast the inner surface of the metal plate to roughen it.
2. Fixing the plate:
- Place the plate on the prepared surface and fix it mechanically using nails or bolts.
- Seal around the plate with EPOMAX-EK epoxy putty and fix injection nozzles along the edges at 20–30 cm intervals.
3. Resin injection:
- After the putty has hardened, inject EPOMAX-L10 or EPOMAX-L20 resin.
- Begin at one end (or at the lowest nozzle if the plate is on the side of a beam).
- Connect the pressure pot and force resin into the first nozzle until it emerges from the next nozzle; cap the filled nozzle and move to the next. Repeat for all nozzles.
- The next day remove the protruding nozzles and restore the plaster if needed.
IV. REMARKS
- Replace the removed plaster with a strong 2 cm thick mortar reinforced with ADIPLAST to minimise temperature expansion of the metal plate.
- Injection is easier with two people: one guides the hose and caps the nozzles while the other controls the pressure pot.
- Mix epoxy components thoroughly using the full amounts of parts A and B. Do not pour mixed resin directly into the pressure pot; mix in the original container and then place it in the pot to avoid contamination.
- Consider pot life and ambient temperature to prevent the resin from hardening prematurely.
- Clean the pressure pot and equipment immediately after application using SM-12 solvent.
- Wear protective gloves and goggles and follow the safety instructions on the product labels.
- EPOMAX-EK two-component epoxy putty
- EPOMAX-L20 two-component epoxy injection resin for cracks 0.1–1.0 mm wide
- EPOMAX-L10 two-component epoxy injection resin for cracks 0.5–3.0 mm wide
I. NATURE OF THE PROBLEM – REQUIREMENTS
Structural elements that have cracked can be strengthened by welding thin metal plates onto their surfaces. The repair system must ensure good bonding between plate and concrete, fill the space between them, and transfer stresses without causing new cracks.
II. SOLUTION
Use thin stainless steel plates 1–1.5 mm thick. Bond the plate to the concrete using injectable epoxy resins: EPOMAX-L10 for a space of 0.1–1 mm or EPOMAX-L20 for 0.5–3 mm, together with EPOMAX-EK epoxy putty to seal edges and form injection ports. Mechanical fixation with nails or bolts holds the plate while the resin cures.
III. APPLICATION
1. Preparation:
- Remove any existing plaster from the area where the plate will be installed.
- Grind and smooth the concrete surface and clean it thoroughly with pressurised water or compressed air.
- Sandblast the inner surface of the metal plate to roughen it.
2. Fixing the plate:
- Place the plate on the prepared surface and fix it mechanically using nails or bolts.
- Seal around the plate with EPOMAX-EK epoxy putty and fix injection nozzles along the edges at 20–30 cm intervals.
3. Resin injection:
- After the putty has hardened, inject EPOMAX-L10 or EPOMAX-L20 resin.
- Begin at one end (or at the lowest nozzle if the plate is on the side of a beam).
- Connect the pressure pot and force resin into the first nozzle until it emerges from the next nozzle; cap the filled nozzle and move to the next. Repeat for all nozzles.
- The next day remove the protruding nozzles and restore the plaster if needed.
IV. REMARKS
- Replace the removed plaster with a strong 2 cm thick mortar reinforced with ADIPLAST to minimise temperature expansion of the metal plate.
- Injection is easier with two people: one guides the hose and caps the nozzles while the other controls the pressure pot.
- Mix epoxy components thoroughly using the full amounts of parts A and B. Do not pour mixed resin directly into the pressure pot; mix in the original container and then place it in the pot to avoid contamination.
- Consider pot life and ambient temperature to prevent the resin from hardening prematurely.
- Clean the pressure pot and equipment immediately after application using SM-12 solvent.
- Wear protective gloves and goggles and follow the safety instructions on the product labels.
