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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: Grading And Workability
Author(s): W. H. Glanville
Publication: Journal Proceedings
Appears on pages(s): 319-326
Abstract:Summarizes the results of work done at the Road Research Laboratory, Harmondsworth, Middlesex, England. The theoretical aspects of workability are dlscussed and a definition of workability given, A method of test, the compacting factor test, is described which measures the degree of compaction of concrete after a standard amount of work has been done on it and relating this to the density of fully-compacted concrete. Using this test, the relation has been established between the strength and workability for mixes of various proportions and various water-cement ratios. The grading and shape of the aggregate have also been- considered in re lation To the effect on workability and strength. The results of the investiqations are summarized in tables, which show the water-cement ratios necessary to give three different degrees of workability in concretes having proportions ranging from I :3 and I :71/z by weight, with each of four different aggregate. grading. A table is presented showing the suitability of different aggregate gradings for various . mixes according to the degrees of workability required. Some indication is also given of the effect of dust in the aggregate on the workability of the concrete.
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