Infrared thermography-driven flaw detection and evaluation of hot mix asphalt pavements.

Details

• Creators:
  Cho, Yong K. ; Bode, Thaddaeus ; Kim, Yong-Rak
• Corporate Creators:
  Peter Kiewit Institute ; Nebraska Transportation Center
• Subject/TRT Terms:
  Asphalt Pavements Flaw Detection Hot Mix Asphalt Infrared Imagery Infrared Testing Pavement Design Pavement Distress Thermographs Pavements, Asphalt Concrete--Testing Thermography
• Publication/ Report Number:
  SPR-PI (08) P309
• Resource Type:
  Tech Report
• Geographical Coverage:
  Nebraska
• Corporate Publisher:
  Nebraska. Dept. of Roads
• Abstract:
  This research was conducted to study more realistic explanations of how variables are created and
  
  dealt with during hot mix asphalt (HMA) paving construction. Several paving projects across the
  
  state of Nebraska have been visited where sensory devices were used to test how the selected
  
  variables contribute to temperature differentials including density, moisture content within the
  
  asphalt, material surface temperature, internal temperature, wind speed, haul time, and equipment
  
  type. Areas of high temperature differentials are identified using an infrared camera whose usefulness
  
  was initially confirmed with a penetrating thermometer. A non-nuclear density device was also used
  
  to record how the lower temperature asphalt density compared to the more consistent hot area. After
  
  all variables were recorded, the locations were marked digitally via a handheld global positioning
  
  system (GPS) to aid in locating points of interest for future site revisits in order to verify research
  
  findings. In addition to the location-based database system using Google Earth, an extensive database
  
  query system was built which contains all data collected and analyzed during the period of this study.
  
  Research findings indicate that previously assumed variables thought to contribute to decreased
  
  density due to temperature differentials, like haul time and air temperature, have little impact on
  
  overall pavement quality. Additionally, the relationship between groups of temperature differentials
  
  and premature distresses one year after paving was clearly linked.
  
  
• Format:
  PDF
• Funding:
  26-1116-0039-001
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:fece7711b04eca0ef6def50a913f37655ec37407e7fe4f37d3fa60da422df3d652eeca466a496efc0c287fe7093752097db0fca1c2d4303df466ce02b10d750e
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/25287/dot_25287_DS1.pdf
• File Type:
  [PDF - 2.09 MB ]