Title:
Strength and Durability Considerations Affecting Mix Proportioning of Concrete Containing Fly Ash
Author(s):
P. J. Tikalsky, P. M. Carrasquillo, and R. L. Carrasquillo
Publication:
Materials Journal
Volume:
85
Issue:
6
Appears on pages(s):
505-511
Keywords:
cementitious content; concrete durability; fly ash; pozzolans; mix proportioning; portland cements; rheological properties; strength; Materials Research
DOI:
10.14359/2260
Date:
11/1/1988
Abstract:
Results of a three-year study on the properties of concrete containing fly ash are presented. Both the fresh and hardened properties are reported for concrete made using Type I cement, river gravel, natural sand, and fly ashes from several sources. The mixtures were proportioned to have similar slump and a constant cementitious content by weight. It is shown that concrete containing fly ash can be proportioned having equal strength properties and adequate durability when a suitable ASTM C 618 Class C or Class F fly ash is used. Test data on over 1600 laboratory and field specimens tested for freeze-thaw resistance, flexural strength, compressive strength, creep, shrinkage, and abrasion resistance are presented. Fly ash contents ranging from 0 to 35 percent by weight of portland cement were used with both Class C and Class F fly ashes. Guidelines for the selection of materials and their proportions for producing concrete containing fly ash to meet existing highway specifications for concrete are presented.