Optimizing the Amount of Class C Fly Ash in Concrete Mixtures
Author | : RM. Majko |
Publisher | : |
Total Pages | : 15 |
Release | : 1984 |
ISBN-10 | : OCLC:1251673250 |
ISBN-13 | : |
Rating | : 4/5 (50 Downloads) |
Book excerpt: This paper describes the results of a two part research program on several laboratory air-entrained concrete mixtures designed to contain increasing amounts of moderately cementitious Class C fly ash. In the first part of the paper, a Type A admixture was used in half of the mixtures, treating both the portland cement Type I and fly ash (15% calcium oxide). In the second part of the paper, three other Class C fly ashes (9 to 12% calcium oxide) were extensively tested in concrete that contained a Type A admixture (but this time treating only the cement). Two very high lime fly ashes (25 to 30% calcium oxide) were also tested in concrete mixtures.