Concrete driveways, walkways, and pavement are popular for their longevity and low maintenance. But winter weather and all that comes with it: freezing, thawing, and de-icing, can expose weaknesses within the concrete and cause defects in the concrete surface. The most common defect observed after a long winter is scaling. Scaling occurs when the top layer of concrete – which is about 1/16th of an inch thick – chips, flakes or peels away. Most concrete surface scaling is caused by:
- No (or low) air entrainment.
Entrained air is required for protection against freeze-thaw damage. However, even air-entrained concrete can scale if exposed to the conditions listed below.
- Exposure to de-icing salts.
Application of excessive amounts of calcium or sodium chloride de-icing salts on concrete with inadequate strength, air entrainment, or curing can lead to scaling.
- Poor finishing practices.
Finishing bleed water into the fresh concrete surface will produce a high water/cement ratio at the surface and, therefore, a surface with low-strength and poor durability. Also, overworking the concrete during finishing will reduce the air content in the surface layer, making it susceptible to scaling in freezing and thawing conditions.
- Insufficient curing.
No or inadequate curing often results in a weak surface skin, which will scale if it is exposed to freezing and thawing in the presence of moisture and deicing salts.
Tear-out and full replacement of a scaled concrete surface is an expensive endeavor. Euco Re-Cover is an affordable, simple solution to refinish scaled concrete and provide an attractive, durable surface that will withstand years of winter weather without deteriorating.
Euco Re-Cover is a single component, easy to apply cementitious overlay reinforced with polymer and micro-fiber to ensure a strong bond and long-term durability even under the harshest of conditions. Euco Re-Cover can be broomed or trowel finished and has a natural light gray color that provides a uniform, slip resistant texture. Euco Re-Cover is perfect for resurfacing of pool decks, sidewalks, driveways, plazas, and parking lots, and can even be used to give a fresh look to old concrete retaining walls. For more information on Euco Re-Cover, visit the product page.
Jennifer Crisman, Director of Marketing Services