GUIDELINES FOR USING HYDRATED FLY ASH AS A FLEXIBLE BASE

The cost of tranporting granular materials for flexible bases can be a major portion of pavement construction costs. Sources of adequate construction aggregates are scarce in some areas of Texas and pavement construction requires transporting significant quantities of aggregate to the construction site. High aggregate transportation costs create the need for alternative sources of materials that are locally available. Hydrated fly ash is a material currently used to make aggregate for flexible base material. This study included a comprehensive literature search on fly ash characteristics, selection, and monitoring of a TxDOT pavement construction project, laboratory characterization of hydrated fly ash material, documentation and presentation of findings to TxDOT, and the development of specifications for fly ash as a flexible base.

• Corporate Authors:

  Texas Tech University, Lubbock

  P.O. Box 4089
  Lubbock, TX  United States  79409

  Texas Department of Transportation

  P.O. Box 5080
  Austin, TX  United States  78763-5080

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Nash, P T
  • Jayawickrama, P
  • Senadherra, S
  • Borrelli, J
  • Rana, ASMA
• Publication Date: 1995-8

Language

• English

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 73 p.

Subject/Index Terms

• TRT Terms: Aggregate mixtures; Construction; Costs; Flexible pavements; Fly ash; Hydration; Paving; Recycled materials
• Uncontrolled Terms: Construction costs
• Old TRIS Terms: Flexible base pavements
• Subject Areas: Construction; Design; Finance; Geotechnology; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I33: Other Materials used in Pavement Layers;

Filing Info

• Accession Number: 00728644
• Record Type: Publication
• Report/Paper Numbers: 0-1365-1F
• Files: TRIS, USDOT, STATEDOT
• Created Date: Nov 9 1996 12:00AM