Feasibility of Granular Road and Shoulder Recycling

Details

• Creators:
  Li, Cheng ; Ashlock, Jeremy ; Cetin, Bora ; Jahren, Charles T.
• Corporate Creators:
  Iowa State University. Institute for Transportation
• Corporate Contributors:
  Iowa Highway Research Board ; Iowa. Department of Transportation
• Subject/TRT Terms:
  • Aggregates
  • Granular materials
  • Laboratory tests
  • Mechanical properties
  • Recycled materials
  • Road shoulders
  • Unpaved roads
  • Plasticity Microsoft Excel (Software)
• Publication/ Report Number:
  IHRB Project TR-685
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  Final Report
• Corporate Publisher:
  Iowa Department of Transportation
• Abstract:
  Granular-surfaced roads and shoulders frequently experience extensive surface damage caused by heavy agricultural traffic loads, freeze-thaw cycles, and wet-dry cycles, which increases maintenance requirements and reduces safety. The goal of this study was to cost-effectively recycle existing degraded granular surface materials while improving them to the optimum gradations and plasticity that will provide the best performance and durability. In this study, a series of laboratory tests was first conducted to quantify the influence of gradation and index properties on the mechanical performance of commonly used materials for granular-surfaced roads and shoulders. Using the optimum gradations and plasticity index ranges as design targets, field demonstration test sections were constructed and tested over the 2016-2017 seasonal freeze-thaw period to assess the performance of several selected materials and construction methods.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/84942/dot_84942_DS1.pdf
• File Type:
  [PDF - 17.60 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:16d8a62e370ea7342a7cfc06fff7c74b50068141a58b95329d5a4651e1ee16eed22b494a49f2855b28140186727e73072b9151986b2fa9a0458ac9c8e6207cbb