Repairing Concrete

When cracks appear in concrete, it is a sign that the structure may be deteriorating and should be repaired as soon as possible. Repair methods vary depending on the type of damage and the location of the structure. The proper material for a concrete repair must be selected to ensure that the repairs are durable and long-lasting.Read more

When repairing concrete, it is important to evaluate the cause of the damage in order to determine whether or not the damage is significant. Cracking caused by intrinsic volume changes, such as drying shrinkage or thermal expansion are usually not significant, but cracks indicating structural design or construction problems raise serious concerns about the load-carrying capacity and safety of the structure.

If the structure is damaged in such a way that it affects safety and serviceability, it should be repaired immediately. Otherwise, many repair methods are available to slow the progression of damage and prolong the life of the structure.

Step-by-Step: DIY Tips for Repairing Concrete

A concrete repair should be made with a material of equal or greater compressive strength than the existing concrete. In addition, the material should be resistant to water penetration and have good abrasion and skid resistance characteristics.

For dormant cracks, a foam backer rod should be placed in the crack before placing the repair material. This will prevent moisture intrusion which could accelerate the instability that created the crack.

When using epoxy or urethane-based repair materials, it is essential to follow the product instructions closely. It is also a good idea to wear protective work gloves and old clothes when working with these products, and to be careful not to get any on your skin. Once the repair has set, it should be covered with plastic and misted frequently to damp cure.

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