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How to repair fine cracks in concrete

injection method

METHOD

Clean out all debris from the crack by raking or high pressure air line.
Adhere the injection flanges at 300mm centres to the concrete surface with the surface sealer/ adhesive directly over the crack. Use a rod to locate the crack and keep the flange aperture free from adhesive. Seal the rest of the exposed crack.
Mix the resin and fill the empty cartridge. Inject the resin via the plastic hose and flange into the crack and work along the crack from flange to flange. Fill until no more resin is accepted.
When the resin has hardened knock of the flanges and grind the concrete to a smooth finish if necessary.