Proportioning of Constant Paste-Composition Fly Ash Concrete Mixes

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Title: Proportioning of Constant Paste-Composition Fly Ash Concrete Mixes

Author(s): Jan Olek and Sidney Diamond

Publication: Materials Journal

Volume: 86

Issue: 2

Appears on pages(s): 159-166

Keywords: aggregates; compressive strength; concrete durability; concretes; fly ash; mix proportioning; pastes; workability; Materials Research

DOI: 10.14359/2330

Date: 3/1/1989

Abstract:
Presents a brief review of published mix-proportioning methods for concrete incorporating fly ash. A new procedure is proposed that attempts to provide fly ash concrete of constant paste quality. In this procedure, the adjustment to provide the necessary workability is accomplished by varying the amount of aggregate used, rather than the water content or the proportion of cement or fly ash. The method is self-contained, requiring no reference to any other formal mix design procedure. The suggested trials result in sufficient data for both strength and workability that fly ash mixes can be confidently designed with reference to the properties of the specific available fly ashes and aggregates.


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