Title:
Standard Specifications for Mineral Admixtures--An Overview
Author(s):
P. K. Mehta
Publication:
Symposium Paper
Volume:
91
Issue:
Appears on pages(s):
637-658
Keywords:
blast furnace slag; chemical analysis; fly ash; mineral admixtures; performance; physical properties; pozzolans; silica; specifications; standards; General
DOI:
10.14359/1778
Date:
2/1/1986
Abstract:
Concern is growing that prescriptive and separate standards are an obstacle to widely using such by-product mineral admixtures as fly ash, granulated slag, and condensed silica fume. Since natural as well as by-product pozzolanic and cementitious admixtures offer similar technical benefits when used in concrete, it is desirable to develop a single performance-oriented standard. With this objective, the principal chemical and physical requirements of a few selected standards are reviewed, with a focus on fly ash and its relevance to current materials. A rational approach is suggested and specific recommendations made toward developing a performance standard to cover all mineral admixtures.