Cracks and joints are two different phenomena in the foundation repair sphere. While joints can be extended through the walls, roof, or floor of a building a crack is a breaking line on the surface leaving a crevice or fissure that may lead to substantial damage if not detected on time. So the need to repair them will normally depend on:
✓ Whether the cracks are associated with corrosion of reinforcement revealed by spalling
✓ Whether the gap in the structure further deteriorates through the structure.
✓ Type of cracks and whether further movement across the crack is anticipated, and that includes the magnitude of the movement.
Homeowners can apply the following methods to remedy cracks not usually associated with deteriorating movement
✓ Removing laitance from the concrete for a distance of 75 mm. You can successfully do this by using power-operated wire brushes, light grit blasting, or high-velocity water jets. You would carefully remove all underlying grit and dust from the surface.
✓ Prepare and brush the line of the cracks with suitably formulated low viscosity and slightly flexible epoxy resin followed by the application of primer.
✓ A bonding coat or the application of an epoxy resin barrier