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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: Coarse Aggregate in Concrete as a Field for Needed Research
Author(s): Herbert J. Gilkey
Publication: Journal Proceedings
Appears on pages(s): 363-414
Abstract:Introduction-Over a period of years several series of tests have been conducted in the concrete laboratory of the University of Colorado, with a view to comparing the strengths of mortars and concretes which were identical except for the absence or presence of coarse aggregate. Without exception the mortars gave higher strengths than the concretes. Usually these were from ten to twenty per cent greater, but the increases were sometimes as much as 50 per cent. In general the difference becomes less as the sizes of the particles, arid the proportions of the coarse aggregate are diminished. The same facts have been noted by others and there are some published statements to this effect.
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