What describes a discrepancy between the actual mix produced and the job mix formula?

• A. The formula is optional for production.
• B. Discrepancy between the actual mix used and the specified formula.
• C. The mix produced is stronger than specified.
• D. The produced mix exactly matches the Job Mix Formula.

Answer: (B)

Understanding how the job mix formula guides production is essential. The job mix formula specifies the exact proportions of aggregates and asphalt binder required to achieve the target gradation and asphalt content. A discrepancy is when the actual mix produced does not match those specifications. This difference is what QA/QC checks for, because deviations can change performance, compaction, and durability of the asphalt pavement. The other statements aren’t describing the general situation: the formula isn’t optional; saying the produced mix is stronger is just one possible outcome of a discrepancy, not the definition; and exactly matching the formula would mean there’s no discrepancy.