Hot Bituminous Pavement QC and QA Projects Constructed in 1996 under QPM 2Specifications

摘要

This report presents Tables and Figures which summarize the HBP Quality LevelAnalysis (QLA) for projects completed in 1996, the second season using the latest significant revision to the specifications. The Quality Level (QL) for the elements (sieve analysis, asphalt content, and pavement density) and the item composites are summarized. While QL determines Pay Factor (PF), it is also used to rank contractors' performance. The item QL improved 1.3 percentage points in 1996 over 1995. But the incentive/distinctive payments were not sufficient to cause some of the contractors to improve their process control. Both, the better and poorer performing contractors show up with similar rankings from year to year. The QLA specifications essentially are serving satisfactorily.