Hot Bituminous Pavement Gradation Acceptance Review of QC/QA Data 2000 through 2003

摘要

This report analyzes the Quality Control/Quality Assurance (QC/QA) data for hot bituminous pavements using gradation acceptance awarded in the years 2000 to 2003. Analysis of the overall performance of the projects is accomplished by reviewing the Calculated Pay Factor Composite (CPFC) and Incentive/Disincentive Payments (I/DP). Analysis of each of the test elements: mat density, percent asphalt, & gradation, is also presented in tables, figures, and reports. Various data groupings are used to evaluate the data including: year, region, & grading. Overall the quality of the hot bituminous pavements has shown improvement in the years 2000 to 2003. The density element has shown the best improvement and has the highest Quality Levels of any of the elements. The percent asphalt element showed slight improvements and has the second highest Quality Levels. No measurable improvements in Quality Levels were noted in the gradation element. This element has the lowest Quality Levels of the there elements. An evaluation of the data was completed to see if project size, plan quantity of HBP, had an effect on the Quality Level results. The larger projects did have higher Quality Level results but the difference was not significantly better than the smaller projects.