Cracked concrete can be an eyesore. But more than that, it can also be a major concern for homeowners safety. Understanding why it happens is the first step to fixing it and avoiding it in the future. Some common culprits of cracked concrete include:
- Shrinkage: As concrete dries and cures, it naturally shrinks. This can cause tension that leads to small hairline cracks.
- Settling: The ground under a concrete slab can shift or settle over time. It’s a movement that creates stress on the concrete surface, causing it to crack to relieve the pressure.
- Heavy loads: Parking heavy vehicles or placing excessive weight on concrete surface can also cause it to crack over time, especially if the surface wasn’t designed to handle such loads.
- Poor installation: Improper mixing and curing of the concrete, no base prep, or not including expansion joints beforehand can all contribute to premature cracking.
- Freeze-thaw cycles: When water seeps into concrete cracks and freezes, it expands. This puts pressure on the surrounding concrete that causes it to widen existing cracks and create new ones.
Solutions to a Cracked Concrete
Concrete crack fillers
For small, non-structural cracks, a simple crack filler is enough. It’s easy to apply and designed to seal the crack, preventing water from getting in and causing more damage. Concrete crack fillers are typically the quickest and most affordable fix for minor issues.
Structural epoxy injection
When dealing with more serious structural cracks, structural epoxies are the go-to solution. They are high-strength resins injected directly into the crack. They bond the concrete back together, restoring the load-bearing capabilities of concrete. It’s often a reliable and permanent fix for cracked concrete such as this.
Sealants and caulks
Sealants and caulks are perfect for cracks that are subject to movement, like between a concrete slab and a foundation wall. They stay flexible even after curing. This allows the materials to expand and contract with the concrete. It’s a crucial factor to prevent the crack from reopening again, sometimes caused by temperature changes or ground shifts.
Concrete overlays
Resurfacing with a concrete overlay is the best solution for widespread cracks. All you need is a thin layer of a special polymer-modified concrete mix applied over the existing surface. This creates a fresh, new look and seals all the cracks at once.
Tips to Prevent Cracked Concrete
Proper sub-base prep
Make sure the ground beneath the concrete is properly compacted and leveled. A stable and well-draining base is the perfect foundation as it prevents settling, which is a major cause of cracking.
Cure the concrete correctly
After pouring, keep the concrete moist for at least a week. Proper curing strengthens the concrete and reduces the risk of shrinkage cracks. You can use curing compounds or wet burlap to achieve the most desired curing results.
Apply a concrete sealer
Applying a high-quality concrete sealer protects the surface from water penetration and damage from freeze-thaw cycles. It’s a simple practice that significantly extends the life of your concrete.
FAQs
Are all concrete cracks a sign of a major problem?
No, not all cracks are a major problem. Small hairline cracks are more common than you think. But pay attention to wide, deep, or widening cracks as these can indicate a more serious issue that may require immediate attention.
Will my new concrete repair last forever?
The longevity should depend on the type of repair you did and the cause of the original crack. A proper, professional repair can last for many years but you may still need regular maintenance checks for long-term repair success.
When should I hire a professional for concrete repair?
Hire professional help when you see wide and deep concrete cracks, or when your concrete slab is not leveled. They can help assess if the cracks are structural and use special methods and tools to fix the issues.
Get All Your Cracked Concrete Solutions From Sealbond
Has cracked concrete gotten you stressed? Don’t wait for the problem to get worse. At Sealbond, you’ve got all the professional solutions—from high-strength epoxy to easy-to-use sealants. Contact us today for expert advice and top-quality products to ensure a permanent fix!
