Yes, by using the right products and working with a knowledgeable contractor, cracks in concrete slabs can be permanently repaired.
The first step is to diagnose why the concrete is cracking in the first place. Typically, concrete slabs are impacted the most by the conditions of the soil under the slab.
Water can soften the soil, causing part of the concrete slab to sink. The uneven weight of the slab then causes it to crack.
Water can also wash away some of the soil under the slab. This causes a void under the slab and the lack of support can cause part of the concrete slab to drop, cracking along the way.
Dry conditions can also cause concrete slabs to crack. As water evaporates from the soil, the soil shrinks and can also leave voids under the slab.
The next step to fixing concrete cracks is to identify what products are going to address the issues causing the cracking in the first place.
PolyLevel, a polyurethane foam, can be injected under concrete slabs. As the foam expands, it fills any voids in the soil. It quickly cures, or hardens, making it an effective solution to level and support the slab. This prevents any cracks from happening in the future.
Current cracks, along with joints - planned cuts in the concrete - can be sealed off to prevent water from seeping through. Using a caulking solution like NexusPro, the look of the cracks can also be minimized.