Concrete repairing can ba divided into six ways:grinding method,cutting method,hand trowel repair,drilling repair,polymer mortar repair and affusion repair. We talked about the grinding method last time,and today we would like to introduce the cutting method to you to repair holes and cracks.This way is suitable for cracks larger than 1 mm, holes bigger than 20mm.

7. After protecting 2-4 hours, then you can carry out the next grinding process.

Notes:
★ 1-5mm holes, cut and clean with a engraving machine;
★ 5-6mm cracks, cut and extend its width, the depth of the cut can not be less than 10mm, while preferably more than 30mm;
★ The hole width more than 10mm but less than 50mm holes, cut it at least 20mm depth; hole width larger than 50mm, cut at least 50mm depth.