What is the term for the breaking away of the hardened concrete surface to a depth of about 1/6 to 3/16 inch?

Scaling is the term used to describe the breaking away of the hardened concrete surface to a depth of about 1/6 to 3/16 inch. This phenomenon typically occurs when the surface of the concrete becomes weak and is unable to withstand environmental conditions or mechanical wear. Several factors can contribute to scaling, including the use of poor-quality materials, improper curing, or exposure to freeze-thaw cycles.

Understanding scaling is crucial in sanitary engineering, as it can affect the longevity and durability of concrete structures, particularly in areas where moisture and temperature variations are common. By recognizing the conditions that lead to scaling, engineers can implement better construction practices and materials to prevent this issue, ensuring the integrity of concrete surfaces in various applications.