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Relationship Between Pozzolanic Activity and Chemical and Physical Characteristics of Selected Canadian Fly Ashes

Published online by Cambridge University Press:  25 February 2011

R. C. Joshi  and
V. M. Malhotra
R. C. Joshi
Affiliation:
Department of Civil Engineering, University of Calgary, Calgary, Alberta
V. M. Malhotra
Affiliation:
Materials Section, Canmet, Department of Energy and Mines, Ottawa, Ontario
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Extract

Raymond E. Davis and his associates appear to have coined the term “fly ash” in 1937. Following the pioneering studies by the U.S. Bureau of Reclamation for the Hungry Horse Dam, the use of fly ash for massive hydroelectric structures increased rapidly in the U.S., with ASTM issuing the first standard in 1954. In 1982, Canada issued a National Standard, CAN 3-A23.5-M82, entitled “Supplementary Cementing Materials and Their Use in Concrete Construction.” Because of the increasing interest in fly ash utilization, Canada Centre for Mineral and Energy Technology (CANMET) initiated research in the area of supplementary cementing materials in the early 1970's and has since published several comprehensive reports on the subject [1,2]. At the University of Calgary, we are studying Canadian fly ashes and their use in concrete, through an investigation of the physical, chemical, mineralogical and pozzolanic properties of fly ashes from fourteen sources across the country. We report here preliminary results from this study.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 65: Symposium T – Fly Ash and Coal Conversion By-Products II , 1985 , 167
Copyright
Copyright © Materials Research Society 1986

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References

1. Berry, E.E., Fly Ash for Use in Concrete. Part 1: A Critical Review of the Chemical, Physical and Pozzolanic Properties of Fly Ash; Report 75-25; CANMET, Energy, Mines and Resources Canada,; 1976 CrossRefGoogle Scholar
2. Berry, E.E. and Malhotra, V., Fly Ash for Use in Concrete. Part II: A Critical Review of the Effects of Fly Ash on the Properties of Concrete, Report 78-16 (CANMET, Energy, Mines and Resources, Canada, 1978).Google Scholar
3. Joshi, R.C. and Rosauer, E.A., Am. Ceram. Soc. Bull. 52, 459–465 (1973).Google Scholar
4. Joshi, R.C. and Lam, D., Sources of Self-Cementitious Properties in Subbituminous Fly Ashes, Report CEB1–6, University of Calgary, 1981.Google Scholar