SELECTION AND USE OF FLY ASH FOR HIGHWAY CONCRETE

A suite of representative Indiana fly ashes was selected and sampled from power stations in all pararts of the state, and tested to provide background information for selection and use of fly ash in highway concrete. Tests included complete chemical analyses and determination of soluble alkalies and sulfate; particle size distribution; surface area and specific gravity measurements; determination of content of magnetic (non-reactive) particles; x-ray diffraction; scanning electron microscope study; and determinations of pozzolanic activity index. It was found that most Indiana fly ashes were Class F materials, only two Class C fly ashes being among those sampled. Many of the Class F fly ashes were almost identical in chemical analysis parameters, apparently due to their common origin in local Illinois Basin coals. There were major differences among the fly ashes in carbon contents, particle size distributions, and other properties of importance with respect to prospective use of fly ash in highway concrete. Several new laboratory techniques useful in the study of fly ash and similar materials were developed in the course of this work. (Author)

• Supplemental Notes:
  • Prepared in cooperation with the Federal Highway Administration. From HPR-1(19) Part II Study titled, Selection andd Use of Fly Ash for Highway Concrete.
• Corporate Authors:

  Purdue University/Indiana Department of Transportation JHRP

  Purdue University, School of Civil Engineering
  West Lafayette, IN  United States  47907-1284

  Indiana Department of Highways

  Indianapolis, IN  United States 

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Diamond, S
• Publication Date: 1985-9-9

Media Info

• Features: Figures; Photos; Tables;
• Pagination: 179 p.

Subject/Index Terms

• TRT Terms: Alkali; Chemical analysis; Concrete pavements; Diffraction; Fly ash; Pavements; Pozzolan; Specific gravity; Sulfates; Test procedures; X rays
• Uncontrolled Terms: Particle size distribution; Selecting; X-ray diffraction
• Old TRIS Terms: Alkalies; Highway pavement
• Subject Areas: Geotechnology; Highways; Materials; Pavements; I36: Aggregates;

Filing Info

• Accession Number: 00451696
• Record Type: Publication
• Report/Paper Numbers: FHWA-IN-JHRP-85-8
• Contract Numbers: 1(22) Part II
• Files: TRIS, USDOT, STATEDOT
• Created Date: Mar 31 1988 12:00AM