What indicates the frequency of slump testing for both quality control and acceptance?

The frequency of slump testing for both quality control and acceptance is primarily governed by specification requirements. These specifications are typically established by organizations such as the American Concrete Institute (ACI) or other relevant authorities and detail the necessary testing protocols that ensure the concrete meets the desired performance criteria.

Specification requirements provide clear guidelines on how often slump tests must be performed throughout the construction process to maintain the quality and consistency of the concrete mix. These requirements consider factors such as the type of project, environmental conditions, and the specific strengths and workability needed for the application.

While the project timeline, concrete mix design, and aggregate size may influence the overall concrete performance and may be relevant factors in assessing quality, they do not dictate the frequency of testing like the specification requirements do. Specifications ensure that a uniform approach is maintained, providing a basis for evaluating compliance with quality standards and acceptance criteria for the poured concrete.