Title:
Study of a Class C Fly Ash Concrete
Author(s):
Robert L. Yuan and James E. Cook
Publication:
Symposium Paper
Volume:
79
Issue:
Appears on pages(s):
307-320
Keywords:
compressive strength; concrete durability; concretes;
creep properties; drying shrinkage; fly ash; freeze-thaw
durability; shrinkaqe. --
DOI:
10.14359/6698
Date:
5/1/1983
Abstract:
This paper describes an experimental investigation into the behavior of fly-ash concrete with respect to strength, durability, shrinkage and creep deformations. A subbituminous coal ash conforming to Class C requirements of ASTM C-618 was used. The use of fly ash as a partial replacement for cement ranges from twenty percent to fifty percent by weight of the cement. These studies confirm that (1) the rate of strength development of Class C fly-ash concrete is comparable with that of portland cement concrete; (2) the effect of fly ash content on the shrinkage deformation is not as significant as the effect of water/cement ratio, (3) for a given water/cement ratio, creep deformation is influenced by the fly ash content and (4) con-crete with fly ash content 20 percent replacement show a better freeze-thaw durability than portland cement concrete.