Guidance for improving foundation layers to increase pavement performance on local roads.

Details

• Creators:
  Gross, Jerod ; Harrington, Dale ; Wiegand, Paul ; Cackler, Tom
• Corporate Creators:
  Iowa State University. National Concrete Pavement Technology Center
• Corporate Contributors:
  Iowa. Highway Research Board
• Subject/TRT Terms:
  • Concrete pavements
  • Life cycle costing
  • Portland cement concrete
  • Pavement design
  • Pavement performance
  • Field tests
  • Pavement layers
  • Permeability
  • Stiffness
  • Optimization
• Publication/ Report Number:
  IHRB Project TR-640 ; InTrans Project 11-422
• Resource Type:
  Tech Report
• Geographical Coverage:
  Iowa
• Corporate Publisher:
  Iowa State University. Institute for Transportation
• Abstract:
  This document is the second of two deliverables for the project Optimizing Pavement Base, Subbase, and Subgrade Layers ; for Cost and Performance on Local Roads (TR-640). The first deliverable is the 454-page Final Field Data Report. The field ; data report describes test results and comparative analysis from 16 different portland cement concrete (PCC) pavement sites ; on local city and county roads in Iowa. At each site the surface conditions of the pavement (i.e., crack survey) and ; foundation layer strength, stiffness, and hydraulic conductivity properties were documented. The field test results were ; used to calculate in situ parameters used in pavement design methodologies for AASHTO (1993) and Iowa’s Statewide ; Urban Design and Specifications (SUDAS). Overall, the results of the study demonstrate how in situ and lab testing can be ; used to assess the support conditions and design values for pavement foundation layers and how the measurements ; compare to the assumed design values. This guide summarizes the study results and outlines general guidelines for ; applying them to optimize pavement bases, subbases, and subgrade layers of local roads with PCC pavements and thus ; their performance.
  More +
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/28440/dot_28440_DS1.pdf
• File Type:
  [PDF - 3.21 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:d137d7709adb96c24e7464fd58fcc3bc15de5160c75635871bb020998c38732e