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How to Prevent and Repair Cracking in Concrete

Prevention and Industrial Repair Concrete Cracks

Concrete is one of the most useful of the building materials because of its strength and durability. However, it is also subject to cracking. Fortunately, there are some things that can be done to prevent cracking in concrete and to deal with the problem if it arises. Two ways of dealing with the problem is through the use of such concrete filler products as POLYFLEX and KWIK-FLEX. It is also important to understand the composition and proper use of concrete.

The Proper Use of Concrete

Like other materials, concrete is affected by extreme temperatures, which can result in cracking. The expansion and contraction of the ground underneath can also result in cracking of the concrete on the surface.

The improper manufacture of concrete, such as the use of excessive water during the mixing process, can also weaken the material and induce cracking. Additionally, concrete has weight and force limitations, and it will crack if these are exceeded.

Steps to Prevent Cracking

Whether it results from applied loads, ground settlement, thermal contraction or shrinkage during the drying process, cracking in concrete can be tolerated, provided that the crack is no more than one-quarter of an inch in width and does not result in water leakage.

The following steps can also reduce cracking in concrete:

  • When preparing the area, repair soft areas and remove topsoil and organic material
  • Properly compact the soil that will be underneath the concrete
  • Provide for proper drainage
  • Prepare the concrete for heavy loads and potential motion
  • Utilize concrete joints through forming, sawing or tooling
  • Properly cure the concrete to compensate for the weather
  • Allow the concrete to completely “bleed” before finishing the project
  • Avoid overworking of the concrete surface
  • Minimize the use of water and maximize the use of coarse aggregate material
  • Prevent rapid drying of the concrete

Concrete Filler Products

POLYFLEX is designed to resist damage from vibrations and vehicular traffic. This two-component, moisture sensitive epoxy is useful in filling concrete cracks and sealing expansion joints and masonry grooves. POLYFLEX will provide protection from water and corrosive materials, and even from the accumulation of dirt.

KWIK-FLEX is designed for use in areas where temperatures are excessively low. It is also useful whenever a quick set is needed. This crack repair material will cure to a strong and resilient seal in only one hour. The product can also be used in cold temperatures, even as low as minus 60 degrees Fahrenheit, without the need of propane torches or heat lamps. Additionally, KWIK-FLEX is useful in slip joints or in filling cracks.

Contact Capital Industries to learn more about our concrete repair products by calling at 631-298-6300.