Equivalency of Crushed Rock with Industrial By-Products and Geosynthetic-Reinforced Aggregates Used for Working Platforms During Pavement Construction

A study was conducted to define an equivalency criterion for five materials used for working platforms during pavement construction on a poor subgrade: conventional crushed rock (referred to as "breaker run") and four alternatives [i.e. Grade 2 granular backfill (referred to as "Grade 2"), foundry slag, bottom ash, and foundry sand]. Total deflection data for the equivalency assessment were obtained from a large-scale model experiment (LSME) simulating a prototype-scale pavement structure and in the field using a rolling wheel deflectometer (RWD). Design charts were developed for selecting the equivalent thickness of alternative working platform materials so that the alternative provides equal deflection as a layer of breaker run. Another phase of the study was conducted to determine the equivalency of geosynthetic-reinforced aggregate working platforms in providing support during pavement construction over soft subgrade. Four reinforcing geosynthetics (a geogrid, a woven geotextile, a non-woven geotextile, and drainage geocomposite) incorporated into two granular materials: Grade 2 and breaker run were used in this study. Design charts were developed for selecting the equivalent thickness of an alternative geosynthetic-reinforced working platform material so that the alternative provides equal deflection as a layer of breaker run.

• Record URL:
  http://wisdotresearch.wi.gov/wp-content/uploads/00-12equivsubgrade-f1.pdf
• Record URL:
  http://minds.wisconsin.edu/bitstream/handle/1793/53965/00-92-00-12-Equivalency-Final_Report%252010-31-05.pdf
• 
• Supplemental Notes:
  • WHRP Project: Equivalency of Subgrade Reinforcement Methods.
• Corporate Authors:

  University of Wisconsin, Madison

  Department of Civil and Environmental Engineering
  1415 Engineering Drive
  Madison, WI  United States  53706

  Wisconsin Department of Transportation

  4802 Sheboygan Avenue, P.O. Box 7910
  Madison, WI  United States  53707-7910

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Benson, Craig H
  • Edil, Tuncer B
  • Tanyu, Burak F
  • Kim, Woon-Hyung
• Publication Date: 2005-10-31

Language

• English

Media Info

• Media Type: Print
• Edition: Final Report
• Features: Figures; References; Tables;
• Pagination: 100p

Subject/Index Terms

• TRT Terms: Aggregates; Backfill soils; Bottom ash; Crushed rock; Deflection; Deflectometers; Design charts; Experiments; Foundry sand; Geogrids; Geosynthetics; Geotextiles; Paving; Road construction; Slag; Subgrade (Pavements); Thickness
• Uncontrolled Terms: Geocomposites; Working platforms (Road construction)
• Subject Areas: Construction; Design; Geotechnology; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces; I33: Other Materials used in Pavement Layers; I52: Construction of Pavements and Surfacings;

Filing Info

• Accession Number: 01020189
• Record Type: Publication
• Report/Paper Numbers: 0092-00-12, WHRP 06-03
• Contract Numbers: SPR 0092-00-12
• Files: TRIS, USDOT, STATEDOT
• Created Date: Mar 15 2006 2:48PM