Spotlight on Pavement Uniformity: Using the Paver-Mounted Thermal Profiler (PMTP) for Asphalt Uniformity

Details

• Corporate Creators:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  • Standardization
  • Pavements
  • Density
  • Hot mix asphalt
  • Quality assurance
• Publication/ Report Number:
  FHWA-HIF-22-014
• Resource Type:
  Brief
• Geographical Coverage:
  United States
• Corporate Publisher:
  United States. Federal Highway Administration
• Abstract:
  In-place density is an important indicator of pavement durability of hot mix asphalt (HMA) mixtures. Nonuniform zones of mix, called "segregation," are typically lower in density than the rest of the HMA mat and appear as common defects in road construction. These locations can fail prematurely, causing poorer ride quality for the traveling public and a burden of unplanned maintenance costs for the agency. Many State Departments of Transportation (DOTs), therefore, check for segregation and density levels in their quality assurance (QA) programs. Traditional segregation check procedures are conducted visually or through sample cores from spots or streaks on the mat. However, it can be difficult to see concentrated, problematic areas, especially at night when paving often occurs. Testing through sample cores may not represent an entire project.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/62677/dot_62677_DS1.pdf
• File Type:
  [PDF - 742.36 KB]
• Collection(s):
  Federal Highway Administration
• Main Document Checksum:
  urn:sha-512:44c4be7993fa3778bbfc30c186b4b4c19f97e1209ca1483f4d82df99c6afcc014f7473f8c5c7c900130d9e5a39ee470b37ba77f0016a67910ab96ea5bb25c014