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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: Autogenous and Hygrometric Expansion of Mass Concrete
Author(s): J. Laginha Serafim and Marciano Guerreiro
Publication: Journal Proceedings
Appears on pages(s): 716-719
Keywords: concrete dams; expansion; free lime; hygroscopicity; magnesium oxides; mass concrete; permeability; strain gages; temperature; volume change.
Abstract:After emphasizing the lack of data on autogenous and hygrometric expansions of mass concrete in the technical literature, it is pointed out that this phenomenon occurs very frequently dams. In fact, an adequate examination of the results obtained from the no-stress strain meters used for the observation of these structures reveals the existence and the magnitude of these expansions. Examples are cited of concretes with and without autogenous expansion. This type of expansion is related to free lime (CaO ) and magnesia (MgO). A correlation is shown between the autogenous expansion and the mean temperature inside the mass during the curing of the concrete.
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