Computerized Method of Projecting Rehabilitation and Maintenance Requirements Due to Vehicle Loadings: Volume 5F

Details

• Creators:
  Garcia-Diaz, Alberto ; Lytton, Robert L. ; Burke, Dock ; McCullough, B. Frank ; Walton, C. Michael
• Corporate Creators:
  University of Texas at Austin. Center for Transportation Research ; Texas Transportation Institute. Texas A&M University
• Corporate Contributors:
  Texas State Department of Highways and Public Transportation
• Subject/TRT Terms:
  Axles Computer Programs Driver Rehabilitation Load Limits Maintenance Management Pavement Maintenance Pavement Performance Pavements Rigid Pavements Simulation Size And Weight Regulations Trucks By Weight

  More +
• Publication/ Report Number:
  298/312-1 (Final)
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas ; United States
• Edition:
  Final Report
• Corporate Publisher:
  Texas Transportation Institute. Texas A&M University ; University of Texas at Austin. Center for Transportation Research
• Abstract:
  The goal of this research project is to revise and combine the REHAB and NULOAD computer models into a new approach to forecast pavement rehabilitation costs. The new approach is called RENU and it incorporates the following three main elements: (a) revised pavement performance equations, (b) design-oriented survivor curves, and (c) a procedure to predict the increment in axle loads when higher pay loads are allowed. The most relevant contribution of the new model in the area of flexible pavements is the development of a serviceability/distress approach to investigate the effect of vehicle loading on the life cycle of highways. This approach has the capability to predict if a pavement needs light to medium rehabilitation as a result of distress signs, when the riding conditions (PSI) has not yet reached a terminal value. The new approach is considered more reliable, for Texas flexible pavements, than the AASHTO methodology. In the area of rigid pavements the two most important improvements are the formulation of a modified AASHTO equation to include soil support values, regional factors, design characteristics, and traffic conditions typical of the Texas highway system, and the development of a failure prediction model to estimate maintenance needs.
• Format:
  PDF
• Funding:
  2-8-80-298 ; 3-8-80-312
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:6e605ceb09af2bfacd9fce3975c55b14a9d174379113d120f7ea1f39c14c34403d7d83498e632dff4c2ae9632e47cbc019bfb0eaeeb237cfd87780bfaa39fe8b
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/85822/dot_85822_DS1.pdf
• File Type:
  [PDF - 2.76 MB ]