Title: Required Quality Control for Fly Ash in Portland Cement Concrete

Author(s): James N. Covey

Publication: Concrete International

Volume: 4

Issue: 7

Appears on pages(s): 11-15

Keywords: beneficiation; burnability; coal; fly ash; mix proportioning; pozzolan cements; quality control.

DOI:

Date: 7/1/1982

Abstract:
Fly ashes, like cements, may best be classed as being plant-specific. It is incumbent upon the utility, the supplier, to institute quality control measures that can certify the product to the user. Likewise, the user must know and understand the physical and chemical characteristics of all materials to develop the proper mix proportions. The author discusses the production and use of fly ash as well as differences in the material throughout the U.S. If fly ash is to be used as a pozzolanic material, quality control and proper mix proportioning are of primary importance.