Common Slab Repair Methods

Concrete slabs are widely used in construction, but they can develop cracks and other issues over time. Proper slab repair is crucial to maintain the integrity of structures and prevent further damage. Here are some common slab repair methods:

Mudjacking

• Involves injecting a grout mixture beneath a sunken or uneven slab.
• The grout expands and elevates the slab, restoring its level position.

Slab Jacking

• Similar to mudjacking, but uses hydraulic pressure to inject the grout.
• Provides greater precision and control over the elevation process.

Underpinning

• Involves excavating beneath the slab and installing additional supports.
• Suitable for slabs with severe settlement or loss of subgrade support.

Helical Piers

• Steel piers with helical blades are screwed into the ground beneath the slab.
• Transfer the load from the slab to deeper, more stable soil layers.

Carbon Fiber Reinforcement

• Involves inserting carbon fiber strips into cracks or joints in the slab.
• Strengthens and reinforces the slab, preventing further cracking.

Crack Repair

• Cracks in slabs can be repaired using epoxy or polyurethane injections.
• These materials fill the cracks and restore the slab's structural integrity.

Polyurethane Injection

• A high-density polyurethane foam is injected beneath the slab.
• The foam expands and fills voids, stabilizing the slab and preventing future settlement.

Slab Replacement

• In extreme cases, when other repair methods are not feasible, the entire slab may need to be replaced.
• This involves removing the existing slab and installing a new one.