When comparing verification and QC core test results, what determines their acceptability?

The acceptability of verification and quality control (QC) core test results is determined by whether those results fall within specified limits of precision. This means that there is an established range or tolerance within which the results of the two tests must align to be considered acceptable.

Precision limits are crucial because they indicate the acceptable degree of variation in the test results, which may arise from factors like measurement error, sample handling, and testing conditions. If the results from the verification tests and QC tests fall within these specified limits, it suggests that both processes are functioning appropriately and yielding reliable data. This is especially important in the context of quality management systems, where consistent and reliable test results are fundamental for ensuring the integrity of materials and processes.

In contrast, results that need to be identical or that can vary without consequences do not account for the acceptable margin of error inherent in testing processes. Focusing solely on average results ignores the precision required in quality control testing, which could lead to overlooking significant variations that could impact overall quality and safety. Therefore, maintaining results within specified limits of precision is integral to upholding quality standards in roadway practices.