Which data item is described by 'Fly Ash Certification'?

• A. Chloride Test Results
• B. Acceptance Concrete Temperature
• C. Cubic Yards of Load
• D. Fly Ash Certification

Answer: (D)

The main idea is that Fly Ash Certification is the documentation that proves the fly ash used in the concrete meets the project’s requirements. This certification, provided by the supplier, accompanies each batch and confirms key details such as the batch/lot number, compliance with the specified standard (for example ASTM C618), the type/class of fly ash, and characteristics like loss on ignition, chemical composition, moisture content, and any other limits the project requires. It also records the source and the date of shipment, lending traceability and assurance that the material meets the agreed-upon specifications before it’s incorporated into the mix.

In contrast, other listed items represent measurements or quantities rather than a certification document. Chloride Test Results report the level of chlorides in the concrete, Acceptance Concrete Temperature concerns the temperature conditions at placement or acceptance, and Cubic Yards of Load is a volume quantity. Since the question asks which data item is described by the label Fly Ash Certification, the correct focus is on the certification document that vouches for the fly ash material itself.