Hot Bituminous Pavement Voids Acceptance: Review of QC/QA Data 2000 Through 2003

Details

• Creators:
  Chavez, Eric
• Corporate Creators:
  Colorado. Department of Transportation
• Corporate Contributors:
  United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  • Quality assurance
  • Quality control
  • Standard deviation
  • Incentives
  • Asphalt content
  • Joint construction
  • Bituminous materials
  • Aggregate gradation
  • Air voids
  • quality levels
  More +
• Publication/ Report Number:
  CDOT-DTD-R-2005-8
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Colorado
• Edition:
  Final Report
• Corporate Publisher:
  Colorado. Department of Transportation
• Abstract:
  This report analyzes the Quality Control/Quality Assurance (QC/QA) data for hot bituminous pavements using voids acceptance as the testing criteria awarded in the years 2000 through 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: asphalt content, voids in mineral aggregate, air voids, mat density, and joint density is presented in tables, figures, and reports. Various data groupings are used to evaluate the data including: year, region, & grading. The specification and the projects are performing reasonably well. The results for the data show that it is remaining fairly constant. No definite upward or downward trends can be seen in the data. Over the four-year time period more projects have received incentive payments than disincentive payments. The average pay over the four years is 1.00660. The quality levels in the individual elements are at reasonable to high levels. The VMA and mat density elements show the best results being above 93% in specification. The asphalt content and air voids elements are at approximately 90%. The joint density specification which was added to the calculations for I/DP in December of 2002 was used on thirteen projects and is showing reasonable results. The average pay factor for this element is just under 1.0 but is expected to rise as contractors gain experience in this area.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/93209/dot_93209_DS1.pdf
• File Type:
  [PDF - 9.24 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:4508394f8af483d98f99ff54e33a4b923caeda24b75338564053e16c98beb65488c833ba60b5ef750c0b104b135f16b92299661190a5f246684e2265f1c58a16