In-Place Voids Monitoring of Hot Mix Asphalt Pavements

Details

• Creators:
  Aschenbrener, Tim ; Harmelink, Donna
• Corporate Creators:
  Colorado. Department of Transportation
• Corporate Contributors:
  United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  • Superpave
  • Monitoring
  • Asphalt pavements
  • Mix design
  • Evaluation
  • Environmental monitoring
  • Air voids
  • Implementation
  • in-place voids
  • Ndesign
  More +
• Publication/ Report Number:
  CDOT-DTD-R-2002-11
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Colorado
• Corporate Publisher:
  Colorado. Department of Transportation
• Description:
  In 1995, the Colorado Department of Transportation implemented the Superpave gyratory mix design to select the optimum asphalt content of a mixture. The optimum asphalt content was not the same as what the department had historically used. The purpose of this study was to gather data to validate the number of gyrations that should be used with the Superpave mix design. Based on the data gathered from the 25 evaluation sections, the optimal number of design gyrations for the Field Mixed/Lab Compacted material is too high. Mixes appear to be too stiff for the traffic and environmental conditions. Implementation Based on the results from this study, two options are recommended to improve design mixes for Colorado's traffic and environmental conditions: 1. Lower the number of gyrations 2. Adjust the target mix design air void content Additional research is recommended to track the adjustments that are made to ensure the desired outcome is achieved.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/93382/dot_93382_DS1.pdf
• File Type:
  [PDF - 666.74 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:97b3fda7302e51ceb002f904502cfb14071e77cc9c50e488cd5249881d286a20a83d19eedd9760eefbc6137ed90896a21be45783eb9f9359a02c07f4be106c2c