Epoxy Injection Crack repair

Guide to Epoxy Injection Crack

Repair

Concrete Crack Concrete cracks can be caused by several reasons including improper construction methods and material composition. As concrete ages the cracking is normal and it can be repaired by using various methods including Epoxy injection which we will be explaining in this guide.www.creativeconcreteandcutting.com.au

Epoxy Injection Epoxy Injection is the method of injecting epoxy into the crack in the concrete to fill up the gaps and stick the concrete together for a long life of concrete. The cracks are filled with epoxy as it flows and fills the cracks when applied pressure via ports.

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Overview As shown in the images the cracks are fitted with ports for epoxy injection then the crack is sealed to avoid epoxy leakage. When the seal dries and all ports are in place the epoxy injection is started using Bottom-Up approach for better results.


Steps of implementing epoxy injection


Clean the cracksInstall the entry and venting portsSeal the surfacesMix the epoxyInject the epoxyRemove the surface seal

Clean The cracksCleaning a crack is

necessary. It is primary step because it ensures successful epoxy injection. You can use Blowers, Vacuum or other traditional method to clean a crack. If there is Moss in the Crack you can use blowtorch to burn it. After that use blower and vacuum to finish the cleaning.


Install the entry and venting ports

Installing the entry and Venting ports is important. The optimal distance between two ports depends on the width of the crack if the crack is very thin you can use ports at a longer distance. But no more than 6” . The venting ports are necessary to allow the epoxy to flow.


Seal the surfacesThe sealing is necessary

to avoid spilling of epoxy when injecting in the cracks. The cracks can be sealed using polyester polymer or epoxy any of them can be used to make a solid seal. The cracks are sealed properly and the gap between the ports should also be sealed.


Mix The Epoxy Mixing of the epoxy

should be done according to the manufacturer guide lines. The amount of epoxy should be decided according to the work need. Mixing extra epoxy is never good. As it will be plain waste if not used in time.


Injecting EpoxyInjecting epoxy is

the work of patience. Start from bottom ports and move upwards to ensure there are no voids or bubbles in the epoxy. Epoxy flows slow so wait until it comes out of an upper port. Close the port you have finished.www.creativeconcreteandcutting.com.au

Remove the surface sealAfter the epoxy is injected

wait for it to settle and dry. After few days you can remove the seal by using chisels or grinders the ports will come out easily and you can then apply a final seal over the repaired part to fill up any defects while removing the seal.


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Epoxy Injection Crack repair

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