Shrinkage, Temperature Changes & More

What Causes Concrete to Crack?

Concrete can crack because of shrinkage, temperature changes, soil movement, excessive loads, or inadequate support beneath the surface. Some cracking is a normal part of concrete’s behavior, while other cracks may indicate problems that require attention.

Understanding the cause is important before deciding whether concrete should be repaired or replaced. A small surface crack does not necessarily mean the concrete has failed, but widening cracks, uneven sections, or recurring movement may indicate a more serious issue.

Cracks & Deterioration

Concrete Common Causes

At Altino Concrete Construction, we understand that concrete cracking can result from soil conditions, weather, and the curing process. Learn more about the causes of concrete damage, the importance of proper installation, and when repairs or replacement may be necessary to maintain safe, durable surfaces.

Why Does Concrete Crack as It Cures?

Concrete changes volume as it hardens and loses moisture. This process can create tensile stresses that lead to shrinkage cracks. Control joints are used in many concrete slabs to encourage cracking along planned locations rather than randomly across the surface. Proper joint spacing and timing are important to their effectiveness. Curing also matters. If concrete loses moisture too quickly, the risk of certain types of cracking can increase.

How Do Soil Conditions Affect Concrete?

The soil beneath concrete must provide consistent support. Poor compaction, erosion, or uneven settlement can create areas where the slab is no longer adequately supported. As the ground moves, concrete may crack or develop differences in elevation between adjoining sections. This is one reason excavation, grading, and soil compaction are important before concrete installation. Addressing unstable ground after the concrete has been placed can require extensive repairs.

Can Weather Cause Concrete Damage?

Temperature changes cause concrete to expand and contract. Repeated freezing and thawing can also contribute to deterioration when moisture enters the concrete or surrounding soil. Cold-weather damage may include surface scaling, cracking, and movement associated with frost-sensitive ground conditions. Proper concrete specifications, drainage, curing, and protection during installation can help reduce these risks.

When Should Cracked Concrete Be Repaired or Replaced?

The appropriate solution depends on the crack’s cause, width, depth, and whether the surrounding concrete is moving. Minor, stable cracks may be suitable for repair. Concrete that has settled significantly, developed major displacement, or lost structural support may require replacement or additional corrective work. For commercial properties, uneven sidewalks and damaged pavement can also create accessibility and safety concerns.

Address Concrete Problems Before They Worsen

Altino Concrete Construction works on commercial sidewalks, slabs, parking areas, foundations, and other concrete improvements. Contact us to discuss your property’s concrete conditions and upcoming construction needs.

Have A Question? We Are Here To Help!

Frequently Asked Questions

At Altino Concrete Construction, we understand that concrete cracking can raise concerns about durability and structural integrity. Explore our FAQs to learn more about common causes of cracking, repair options, and how proper reinforcement helps support long-lasting concrete installations.

Is it normal for new concrete to develop small cracks?

Yes. Some cracking can occur as concrete shrinks and responds to temperature changes. Proper installation helps control cracking, but it cannot guarantee a completely crack-free surface.

Can cracked concrete be repaired without replacing it?

Sometimes. The appropriate repair depends on the severity of the damage, whether the crack is stable, and the condition of the supporting soil.

Does reinforcement prevent concrete from cracking?

Reinforcement generally helps control crack widths and maintain structural performance where specified. It does not eliminate all cracking.

What Causes Concrete to Crack?