ISSN: 0149-6123
CODEN: CCAGPD
Page Count: 7

Variability and Control of Class C Fly Ash
Ledbetter, WB
Research engineer, Texas Transportation Institute, Texas A&M University, TX

McKerall, WC
Lieutenant, United States Navy, U.S. Navy Support Facility, Deigo Garcia, FPO San Francisco, CA

Abstract

Five Class C fly ashes produced in Texas were analyzed for their potential usefulness as a construction material in highways. In order to determine the variability a new test method was devised and termed the calcium oxide heat evolution test, whereby the total calcium oxide content of the Class C fly ashes can be quickly and reliably determined in the field, as a quality control test. By using this test plus the traditional physical and chemical characterizations, the variability of typical fly ashes produced in Texas was ascertained. They were shown to generally conform to the requirements of ASTM for Class C fly ash. In addition to the analysis the potential usefulness of this type of fly ash is discussed, and the test procedures for calcium oxide content are described.

Keywords:
concretes, concrete pavements, fly ash, high lime fly ash, fly ash properties, fly ash concrete, fly ash mortar, fly ash quality control

Paper ID: CCA10233J
DOI: 10.1520/CCA10233J
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