Which of the following are compliance requirements that the concrete must meet to pass the acceptance test?

• A. Strength
• B. Homogeneity
• C. Workability
• D. All of these

Answer: (D)

In acceptance testing for concrete, a batch must meet several criteria to be approved. The strength requirement ensures the concrete can carry the designed loads over its service life. The workability requirement relates to how easily the mix can be placed, consolidated, and finished on site. The homogeneity (uniformity) requirement ensures the mix has consistent composition and properties throughout the batch, avoiding weak spots or segregation. Because all of these aspects are part of meeting the specified criteria, the batch must satisfy all of them to pass. In practice, tests often include 28‑day compressive strength, a measure of workability like slump, and checks for uniformity across the batch. If any one of these areas fails, the batch may not pass the acceptance test.