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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: Long-Time Study of Cement Performance in Concrete
Author(s): L. S. Brown
Publication: Journal Proceedings
Appears on pages(s): 877-924
Abstract:This paper records the petrographic studies made on the 21 lots of clinker manufactured for the 27 Long-Time Study cements. These studies showed that nine entities were regularly determinable, these being C3S, C2S, C3A, C4AF, free CaO, free MgO, a "dark prismatic" mineral, glass, and a microscopically differentiated complex. Percentages of these mineral phases were measured on polished sections, by means of a Wentworth integrating stage, for each lot of clinker. The cements, are presented in tabular form. The paper also is concerned, on the one hand, with the history and techniques of clinker mineral identifiation and, on the other hand, with correlations between the mineral compositions and various other features or properties of the clinkers and the cements.
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