EFFECT OF FLY ASH QUALITY ON THE PERFORMANCE AND SERVICE LIFE OF CONCRETE. FINAL REPORT

This investigation addresses the effect of variable loading in power stations on the material properties and quality of the produced Class F Fly Ash. In addition, the effect of varying fly ash quality on the properties and durability of concrete was investigated. The properties of the as-received ash that were quantified include: oxides composition, oil content, carbon content, LOI, glass content, particle size distribution, fineness, mortar cube strength and reacted fly ash fraction. It was found that variation in loading conditions affected the pozzolanic activity of the ashes. The pozzolanic activity was found to be a function of the fly ash glass content, fineness and oil content. Properties of fresh concrete, namely, air content and slump were found to be affected by the quality of the as-received ash, specifically its carbon content. The strength of concrete mixes incorporating different quality fly ashes was found to be a function of the as-received ash properties.

• Corporate Authors:

  University of South Florida, Tampa

  Department of Civil and Environmental Engineering, 4202 East Fowler Avenue
  Tampa, FL  United States  33620

  Florida Department of Transportation

  Haydon Burns Building, 605 Suwanee Street
  Tallahassee, FL  United States  32301

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Zayed, A M
  • Washburn, T
  • HARMAN, P
• Publication Date: 1991-9

Language

• English

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 71 p.

Subject/Index Terms

• TRT Terms: Air content; Carbon; Concrete; Durability; Fineness; Fly ash; Fresh concrete; Glass; Oxides; Physical properties; Pozzolanic action; Properties of materials; Quality control; Slump test; Strength of materials
• Uncontrolled Terms: Carbon content; Concrete properties; Concrete strength; Glass content; Particle size distribution; Quality
• Old TRIS Terms: Oil content
• Subject Areas: Geotechnology; Highways; Materials; I32: Concrete; I35: Miscellaneous Materials;

Filing Info

• Accession Number: 00627228
• Record Type: Publication
• Report/Paper Numbers: FL/DOT/RMC/0524-3292, WPI 0510524, State Proj 99700-7501-119
• Contract Numbers: C-3292
• Files: TRIS, USDOT, STATEDOT
• Created Date: Apr 2 1993 12:00AM