Concrete patching is a localised repair method that involves removing damaged or deteriorated concrete and reinstating it with a compatible repair mortar.
Explanation
Concrete patching is typically used where deterioration is confined to specific areas rather than affecting an entire structural element. The process usually involves:
- Breaking out unsound or contaminated concrete
- Cleaning and treating exposed reinforcement
- Applying bonding agents where required
- Reinstating the area with structural repair mortar
- Finishing and protecting the surface
Patching is commonly specified to address spalling, reinforcement corrosion, impact damage, or surface defects in beams, slabs, balconies, and car parks.
Correct preparation and material selection are essential to ensure compatibility with the existing concrete and to prevent recurrence.
Why It Matters
When properly executed, concrete patching:
- Restores structural performance
- Protects reinforcement
- Extends service life
- Reduces the need for full replacement
Poorly specified or incomplete patch repairs can lead to recurring damage and higher long-term costs.