How to Repair Full Depth Damaged Concrete Floors and Slabs
Repairing localised areas where the concrete slab has failed through to sub-base
For localised repairs where the concrete has failed down to the sub-base e.g. collapsed floor slab intersections
Method for Full Depth Slab Repair
- Saw cut square the perimeter of damaged area and break out defective concrete leaving only sound concrete.
- Re-compact the sub-base and replace any DPM.
- Drill and fix dowel bars with resin anchor grout to tie the repair to the existing concrete where appropriate and place fibreboard to reform the movement joint.
- For free standing repair place fibreboard round the perimeter of repair to separate it from the original. No dowels are needed.
- Prime the sides of the repair area for tied repairs.
- Mix and compact the repair concrete finishing level with the traffic surface.
- Allow to harden and cut the fibreboard to form a recessed joint if required.
- Install joint sealant and allow to cure before trafficking.
Materials for Full Depth Repairs
Click on a product name for technical data and application instructions
Resin Anchor Grout
Anchorset Green 300
Dependent on repair medium
Repair Concrete Type
Joint Sealant Primer
Dependent on sealant
Joint Sealant Type
Colpor 200 PF
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