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• Features & Benefits
• Application Notes
• Limitations

Features & Benefits

• Self contained packs include everything necessary to complete the crack injection (two-part epoxy crack injection resin contained in a patented single cartridge, complete with injection nipples and hoses)
• Convenient to use disposable cartridge contains both resin and hardener
• Safe and clean to use, non-return valves avoid leakage and spills
• High strength, excellent bond to concrete, brickwork and masonry
• Low viscosity and thixotropic options allow cost effective and efficient repair

Uses

• Designed for injecting cracks in concrete and masonry where there is a need to consolidate a structure or exclude water and air from contact with reinforcement
• Low viscosity system suitable for cracks down to 0.2 mm at the surface and internal cracks tapering down to 0.01 mm
• Ideal for small scale repairs on site and are also suitable for in-situ or precast concrete elements

Pack Includes: 

• 12 cartridges - (0.25 litre of mixed resin per cartridge)
• 30 injection nipples
• 6 hoses
• 4 air release pins
• 6 mixing rods

Also available: Nitokit Accessory Pack as well as extra hoses, nipples and air release pins.

Application Notes

Application of the injection resin may commence as soon as the Nitokit Surface Sealant has fully hardened.

Mixing

• Cut the top off the conical nozzle and insert T-shaped rod and turn clockwise to engage mixing head in cartridge
• Push rod down the full length of the cartridge to break the membrane separating the resin and hardener
• Pump up and down thirty to forty times to mix resin and hardener
• Turn the T-shaped rod anti-clockwise to disengage and then remove. Do not shake
• Unscrew the conical nozzle and discard
• Screw the Nitokit hose onto the cartridge. Ensure the rubber ‘O’ ring is in place on the cartridge. Do not over tighten the fitting as this may distort the ‘O’ ring
• Use the mixed material within the useable life (50 minutes @ 20°C)

Injecting

• Place the cartridge into the gun supplied with the accessory pack, then push the free end of the Nitokit hose on to the lowest nipple and tighten the locking cap. Do not over tighten
• Insert an air release pin into the next nipple adjacent to the injection point
• Commence pumping slowly. Do not use excessive pressure. The rate of acceptance into fine cracks may be very slow
• When resin appears at the nipple adjacent to the injection point:
  • Stop pumping
  • Release the pressure on the injection gun
  • Remove the air release pin
  • Unscrew the cap and, with a twisting movement, pull off the Nitokit hose
• Attach the Nitokit hose to the next nipple, insert air release pin in the nipple beyond and recommence pumping, then repeat the process until the entire length of crack has been injected
• On completion of pumping, the last cartridge can be left connected and pressurised slightly to allow for possible seepage into deep-seated cracks.

Making Good

• After the resin has set, remove the nipples. These can be knocked off with a hammer
• Make good any holes or voids with Nitokit Surface Sealant
• The existing surface sealant can then be removed by either grinding or heating with a hot air gun and scraping the concrete surface until the original substrate profile is restored
• Tools and application equipment should be cleaned using Fosroc Solvent 102

Limitations

• Should not be used for cracks where movement is expected to continue. Other measures should be taken to accommodate such movement, ie cutting and forming a movement joint
• Where ambient temperatures exceed 20°C note the pot life will be reduced
• Cure temperatures below 15°C will result in slower strength build up; at 5°C cure will stop until the material warms