Title:
Durability of Concrete Containing Calcined Clay
Author(s):
Rachel J. Detwiler, Javed I. Bhatty, Gregory Barger, and Eric R. Hansen
Publication:
Concrete International
Volume:
23
Issue:
4
Appears on pages(s):
45-49
Keywords:
DOI:
Date:
4/1/2001
Abstract:
This paper reports a laboratory study of the behavior of concretes containing calcined clay, either as an admixture or as a component of blended cement. The blended cement was originally formulated with a lower content of supplementary cementing material than optimum in order to be used with a Class C fly ash. The tests conducted in Phase I of this study relate primarily to the durability of concrete containing alkali-reactive aggregates and exposed to deicing salts. Phase II pertains to concretes used in the construction of a parking garage at Kansas City International Airport. Both Phase I and Phase II show the benefits of using calcined clay in concrete, either in binary mixtures or in combination with fly ash or silica fume. These stem from improvements to the pore structure of the concrete that enhance the concrete’s resistance to the ingress of chloride ions and other harmful materials.