What Are Some Common Causes of Cracking in Concrete?

With proper installation, concrete is a highly durable and long lasting product. Concrete contractors must follow proper guidelines for the type of concrete chosen and its installation in order to help ensure long-lasting material integrity and results. At Garage Floor Coating of MN, we are committed to provide the exceptional results you need for your concrete floor projects.

One of the most common issues that occur with concrete installation is the problem of concrete cracking. Some of the most common reasons why concrete cracks include:

Changes in Temperature

When the temperature of concrete changes, so does its differential volume. When this occurs and the tensile strain capacity of the concrete is exceeded as a result, the concrete will crack.

Shrinkage

In hardened concrete, shrinkage is major cause of cracking. During the process of drying shrinkage, concrete volume reduces gradually. If concrete part is supported or fixed against free movement, the resulting tensile stresses will cause cracking.

Design and Detailing Errors

Design and detailing errors, including improper material selection, insufficient reinforcement, too few contraction joints, or other design problems can result in concrete cracking.

Inadequate Construction

Cracking in concrete can also result from poor construction practices, such as the use of low-grade materials, adding too much water in the mix, improper placement of construction joints, poor compaction, and insufficient curing.

Chemical Reaction

The chemical reaction of carbon dioxide (CO2) in the atmosphere combining with the alkaline make-up of the cement can lead to a considerable increase in the material volume, resulting in cracking.

Construction Induced Loads

Loads that are generated as a result of construction can cause concrete cracking, particularly when formwork is removed.

Elastic Deformation and Creep

Various concrete components of structures that sustain loading, such as beams, columns, slabs, and walls, can undergo elastic deformation. This type of concrete deformation can result in cracking.

Corrosion of Reinforcement

When steel rebar in the concrete corrodes, it expands and introduces new pressure on the surrounding concrete cover, resulting in concrete tensile stresses. These stresses cause the concrete cover to crack and spall.

To learn about the concrete floor services we offer at Garage Floor Coating of MN, call us today at 763.559.8732, or use our contact form to request a quote or arrange an appointment for service.