FLY ASH CONCRETE MIX-DESIGN AND THE WATER-CEMENT RATIO LAW

When the water-cement ratio law was proposed by Abrams in 1918, the use of fly ash and silica fume as replacements or substitutes for part of the cement was virtually unknown. Consequently, the effects of fly ash and silica fume were not considered in the development of Abrams' law. Since the early 1960s, concrete mix compositions have changed, and cement is no longer the only cementitious material in concrete mixes. In a high percentage of situations, today's cementitious material content is made up of cement plus fly ash. This study investigates the applicability of Abrams' law to concrete mixes containing fly ash. As initially expected, it was found that Abrams' water-cement ratio law is not directly applicable to mixes with fly ash. An alternative augmented water-cementitious materials ratio law is proposed for designing concrete mixes containing fly ash.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/13846872
• Corporate Authors:

  American Concrete Institute

  P.O. Box 19150, Redford Station, 22400 Seven Mile Road
  Detroit, MI  United States  48219
• Authors:
  • Oluokun, F A
• Publication Date: 1994-7

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 362-371
• Serial:
  • ACI Materials Journal
  • Volume: 91
  • Issue Number: 4
  • Publisher: American Concrete Institute (ACI)
  • ISSN: 0889-325X
  • Serial URL: https://www.concrete.org/publications/acimaterialsjournal.aspx

Subject/Index Terms

• TRT Terms: Concrete; Fly ash; Mix design; Proportioning; Silica fume; Strength of materials; Studies; Water cement ratio
• Uncontrolled Terms: Abrams' law
• Old TRIS Terms: Investigations
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 00667419
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 29 1994 12:00AM