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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: The Nature of Mass Concrete in Dams
Author(s): Jerome M. Raphael
Publication: Special Publication
Appears on pages(s): 133-160
Keywords: aggregate size; aggregates;
dams; creep properties; compressive strength; concrete
PI diffusivity; dynamic loads; elastic properties;
il heat of hydration; hydration reaction rates;
Abstract:The properties of mass concrete to be used in the numerical analysis of dams are derived from properties determined on concrete specimens in laboratory tests. Care is needed in selecting and modifying these data since mass concrete is quite different from structural concrete, and from the concrete of most laboratory experiments. Consideration is given to time-dependence of strength, elastic modulus, and creep, and factors are furnished to derive representative values for mass concrete from laboratory tests, since modulus of elasticity varies with the type of loading: for dead load and water load analy-ses, it is a fraction of the tested modulus; for earthquake loading, it is a multiple of the tested modulus. The variation of temperature-dependent properties with aggregate types is discussed. Tn all these properties, the influence of the aggregate is much stronger than the influence of the cement paste in setting the magnitude of structural properties.
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