Classification of Fly Ash According to Japan Industrial Standard, JIS A 62014999

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Title: Classification of Fly Ash According to Japan Industrial Standard, JIS A 62014999

Author(s): S. Nagataki, F. Tomosawa, T. Kanazu, and T. Yamamoto

Publication: Special Publication

Volume: 199

Issue:

Appears on pages(s): 29-42

Keywords: fly ash; Japan industria utilization l standard; mineral admixture;

Date: 6/1/2001

Abstract:
The Japan Industrial Standard (JIS) of “Fly Ash for Use in Concrete, JIS A 620 1 ” was revised in 1999 in order to widen the utilizable amount of fly ash as a mineral admixture. The featured points in this revision were that; [l] fly ash with high loss on ignition (LOI) ranging from 5.0% to 8.0% is specified as Class-III, [2] fly ash with low Blaine fineness ranging from 15OOcm’/g to 2500cm’ig is specified as Class-IV, [3] high quality fly ash with LO1 less than 3.0% and Blaine fineness more than 5000cm2/g was specified as Class-I. Most of the fly ash qualified in JIS A 6201-1996 would be specified as Class-II. Class-III and Class-IV fly ash wouldn’t meet the requirement of JIS A 6201-1996. This paper describes the background and the contents of the revision of JIS A 6201.