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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: Developments in Methods of Testing and Specifying Coarse Aggregates
Author(s): Lewis H. Tuthill
Publication: Journal Proceedings
Appears on pages(s): 21-32
Abstract:In suggesting a different basis for testing the screening of coarse aggregate, emphasis and restriction are placed on that portion of the undersize material which is most detrimental to the production of uniform, high quality concrete. Clean separation on a production basis is impracticable; some materiaI slightly smaller or slightly larger than the designated nominal size range of coarse aggregate size fraction can be allowed without perceptible ill effect on the concrete. Characteristics of the undersize and common practice in the screening and handling of aggregates are discussed. A test for determination of only the significant (obiectionable) portion of the nominal undersize is submitted, and a specification based on this test.
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