This interim report documents an extensive investigation undertaken to independently evaluate and validate a nondestructive testing technology for asphalt compaction assessment known as the density-profiling system (DPS). The investigation tests the sensitivity of DPS to various temperature and moisture conditions, explores the fundamental mechanisms of using DPS in the laboratory and in the field, and documents lessons learned from a field trial. The findings of this investigation contribute to the broader body of knowledge in pavement technology, highlighting how innovative tools can enhance construction practices.

Recommended citation: Federal Highway Administration, Validating a Density-Profiling System for Asphalt Compaction Assessment (Washington, DC: 2024) https://doi.org/10.21949/1521588