Critical assessment of I-85 CRCP crack spacing patterns and their implications for long-term performance.

Details

• Creators:
  Tsai, Yichang (James) ; Wang, Zhaohua
• Corporate Creators:
  Georgia Institute of Technology
• Corporate Contributors:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  Continuously Reinforced Concrete Pavements Global Positioning System Highways Pavement Performance Spacing Transverse Cracking
• Publication/ Report Number:
  FHWA-GA-14-1239
• Resource Type:
  Tech Report
• Geographical Coverage:
  Georgia
• Corporate Publisher:
  Georgia. Department of Transportation. Office of Research
• Abstract:
  Transverse crack patterns in Continuously Reinforced Concrete Pavement (CRCP) are important
  
  indicators of pavement performance. This study is a) to study the Mean Crack Spacing (MCS) and localized
  
  cracks of a newly constructed CRCP and compare them with a 40-year-old, in-service CRCP, and b) to
  
  establish a location reference framework to support a long-term temporal crack pattern propagation analysis.
  
  Crack patterns were critically assessed in a 52-lane-mile CRCP on I-85 constructed in 2011 southwest of
  
  Atlanta, Georgia, and were compared with the ones in a 6-lane-mile CRCP on I-20 built in 1972 west of
  
  Atlanta. A semi-automatic method was conducted to extract and register the detailed crack maps using 2D
  
  pavement images and high-resolution GPS data. The statistical analysis on all 1,000-ft roadway segments
  
  shows that the average crack spacing on I-85 is smaller than the one on I-20 and the MCSs are generally
  
  bounded by the M-E PDG recommended range (3 to 6 ft.). There is no segment on I-85 with MCS less than
  
  2 ft. The MCSs on I-20 are well bounded by the 1993AASHTO recommended range (3.5 to 8 ft.), but at the
  
  upper end of M-E PDG range. This early stage of crack pattern analysis and the accurate lane-based location
  
  reference has established a solid foundation and framework for potential follow-on studies to correlate crack
  
  patterns with the actual pavement performance, such as punchout, smoothness, and structure/foundation
  
  deficiency.
  
  
• Format:
  PDF
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:cae7431698c44f467492d1ba3e75fba2aee0cf380e5a8cae0d3150cc809b870ad9608115dbd22b371643cf00be7c1c938331c2f3a03bd346b7e56e58de98cf3a
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/29369/dot_29369_DS1.pdf
• File Type:
  [PDF - 4.75 MB ]