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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Re-Proportioning of Concrete Mixtures for
Author(s): H. J. Gilkey
Publication: Journal Proceedings
Appears on pages(s): 633-645
Keywords: no keywords
Abstract:FolloGing a summary of current knowledge of air entrainment, the problems of mixture re-proportioning are presented and illustrated with unit-block solid-volume diagrams. Range of mixtures, from rich to lean, is covered for a structural grade concrete of 3-m. slump and a nominal 4 percent of entrained air. Three specific approaches to the problem of re-proportioning are indicated and illustrated. Revised proportions of the three base mixtures, (rich, medium, and lean) are tabulated and graphed for each of the three tech-niques of adjustment employed. The objective is not only to cover visually and systematically the manipulatory aspects of air entrainment but also to refocus attention upon the unit-block, solid-volume concept as auseful technique and clarifying approach to the better comparative understanding of concrete mixtures in general.
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