1.Attach the bases along the crack and seal the gaps between them with sealing adhesive.

2.After the sealant solidifies and gains sufficient strength, fill the injection tool with sealant and mount it onto the base to begin grouting.

3.Immediately after injection, plug the injection port with a stopper to prevent leakage.

4.Once the adhesive inside the crack reaches initial setting and no longer flows, the injection nozzle can be removed.