ACI 364.17T-18 PDF Download

The ACI 364.17T-18 standard addresses the need for a standardized method to measure the pH of a concrete surface. The standard acknowledges that while there is ample information available on the pH of concrete in relation to various factors such as carbonation and corrosion, there is limited research on specific test methods for measuring surface pH.

The standard highlights the alkaline nature of Portland cement and other hydraulic-cement-based concretes. The pH of freshly placed concrete typically ranges from approximately 12 to over 13, depending on the cement chemistry and alkali content. However, the surface pH of concrete can be lower, around 9, due to carbonation.

By providing a standardized approach for measuring surface pH, the standard aims to ensure accurate and consistent results when assessing the suitability of a concrete surface for the installation of a floor covering. This measurement is crucial as it helps determine the compatibility of the concrete with the chosen floor covering system, as different systems may have specific pH requirements for proper adhesion and durability.