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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: A Hypothesis on Mechanism of Creep of
Concrete With Reference to Multiaxial Compression
Author(s): By K . S. Gopalakrishnan, Adam M. Neville,
and Amin Ghali
Publication: Journal Proceedings
Appears on pages(s): 29-35
Keywords: biaxial stresses; cement pastes; compression; concretes; creep properties; creep recovery; moisture; Poisson’s ratio; rheological models; shrinkage; strains; stresses; theories; triaxial stresses.
Abstract:It is suggested that creep is due to oriented internal moisture diffusion caused by a free energy gradient and to slow deformation of the elastic skeleton of the gel induced by viscous deformation of adsorbed water. Shrinkage actually realized is affected by the relief of stress in the elastic skeleton by creep. The nature of moisture diffusion suggests that creep strains may not be superposable under multiaxial stress. Creep recover is shown to depend both on creep at the time of unloading and on magnitude of elastic strain recovery. A rheological model is proposed. Some supporting experimental data are presented.
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