Five fly ashes produced in Texas from sub-bituminous coals and lignites were analyzed in terms of variability and their effect on fresh properties of mortars. As these fly ashes contain significant quantities of CaO, a rapid and reliable method of determining the total CaO content was developed. Using the CaO Heat Evolution Test, the CaO content can be determined in a field laboratory in less than 10 minutes. The Texas fly ashes, although somewhat variable, exhibit excellent properties for use as a partial lime replacement in soil stabilization and as a partial portland cement replacement in concrete. Extremely strong correlations were found between many of the physical characteristics and chemical properties of the five fly ashes.

  • Supplemental Notes:
    • Sponsored in part by Texas State Dept. of Highways and Public Transportation, Austin.
  • Corporate Authors:

    Texas Transportation Institute

    Texas A&M University System, 3135 TAMU
    College Station, TX  United States  77843-3135

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    Texas State Department of Highways & Public Transp

    11th and Brazos Streets
    Austin, TX  United States  78701
  • Authors:
    • McKerall, W C
    • Ledbetter, W B
    • Teague, D J
  • Publication Date: 1981-1

Media Info

  • Pagination: 107 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00343745
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: TTI-2-9-79-240-1, FHWA/TX-81/21
  • Created Date: Oct 28 2003 12:00AM