Which documents should be checked to confirm the admixture dosage matches the mix design?

• A. Admixture label and batch ticket, confirm dosage per mix design, and verify compatibility with other materials.
• B. Material safety data sheet and supplier brochure.
• C. Project schedule and daily log.
• D. Acceptance criteria and test results.

Answer: (A)

Verifying that the admixture dosage matches the mix design hinges on the paperwork generated during batching: the admixture label and the batch ticket. The label provides the product identity and the dosage rate recommended by the manufacturer, while the batch ticket records the exact amounts actually added for that batch. Cross-checking these against the mix design ensures the planned dosage is used and catches any discrepancies before placement. It’s also important to consider compatibility with other materials, since some admixtures can interact with cement type, aggregates, or other additives and affect performance if not aligned with the design. The other documents don’t directly verify dosage against the design: safety data sheets and supplier brochures cover safety and general properties, project schedules and daily logs track timing and progress, and acceptance criteria and test results pertain to performance after testing rather than confirming that the batch followed the design.