Which pay factor for in-place density indicates a significant quality issue?

A pay factor for in-place density that is at 25% indicates a significant quality issue because it reflects a considerable deviation from the specified requirements for density, which is critical for the structural integrity and performance of the pavement. In the context of quality control for construction projects, a pay factor at this level signifies poor compaction efforts, resulting in a reduction of the material's ability to support loads effectively.

This level of pay factor suggests that the work is far below acceptable performance standards, leading to considerable financial penalties and possibly requiring rework to meet the project's design intentions. It is essential that proper density is achieved to ensure durability and longevity in pavement structures, and a pay factor of 25% highlights that immediate corrective actions are necessary. Understanding such thresholds is important for QC Managers to maintain quality assurance and project integrity throughout the construction process.