Performance Evaluation of Typical UDOT Surface Treatments

Details

• Creators:
  Romero, Pedro ; Bao, Shuangli ; Sudbury, Daniel
• Corporate Creators:
  University of Utah. Department of Civil and Environmental Engineering
• Corporate Contributors:
  Utah. Dept. of Transportation. Research Division ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  Asphalt Pavements Bituminous Overlays Deterioration By Environmental Action Pavement Performance Pavement Preservation Performance Tests Service Life Stone Matrix Asphalt Thin-Lift Treatment
• Publication/ Report Number:
  UT- 19.17
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  Final Report Aug 2012 – June 2018
• Corporate Publisher:
  Utah. Dept. of Transportation. Research Division
• Abstract:
  Fourteen Thin-Lift Treatments (TLTs) in UDOT’s Region 2 were evaluated over a five-year period in order to assess their performance. Surface distress data was quantified using Pavement Condition Indices (PCIs) and Remaining Service Life (RSL) were estimated following procedures utilized by UDOT. With the first 5 years’ evaluation, 2 TLTs sections have failed by WP index, and 2 TLT sections have failed by ENV index. I-80.1, and SR-210 failed due to the WP evaluation, SR-89 and SR-210 failed due to the ENV evaluation, in total 3 sections have reached failure. SR-210 has failed mainly due to environmental distresses. When all of the different treatments are grouped and both environmental and traffic loading are considered, it was found that the average life for the dense graded surface treatments is 7.3 years; the average life for the open graded surface course was slightly better at 7.9 years. It is estimated that the average life of SMA’s is 11.7 years. The local TLTs were compared to similar pavements from the LTPP database. Both UDOT and LTPP roads are seeing a greater number of environmental failures as opposed to structural or wheel-path failures. It is concluded that environmental factors are the main cause of deterioration of surface treatment. The TLT’s placed on UDOT’s Region 2 have a life expectancy of at least 7 years. Based on their performance, it is recommended that, whenever feasible, SMA should be used in high valued roads.
• Format:
  PDF
• Funding:
  14-8070
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:794beb4ea7ff2e0ae05f503700553ea9bc9deed32c62b56b25197a82a99c8203
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/62254/dot_62254_DS1.pdf
• File Type:
  [PDF - 2.38 MB ]