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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: Rheological Behavior of Hardened Cement Paste under Low Stresses
Author(s): Joseph Glucklich and Ori Ishai
Publication: Journal Proceedings
Appears on pages(s): 947-964
Abstract:Rheological experiments determined the complete theological model of hardened cement paste. It is shown that for a W/C ratio of 0.32 and air-sealed material the model consists of: (a) a Hookean spring; (b) three Kelvin elements, of different parameters, in series; (c) a nonre-versible Kelvin element; (d) an element comprising a dash-pot, representing deformation due to microcracking. All these elements are connected in series. Elements (a) and (b) represent reversible deformation, while (c) represents a nonreversible deformation and (d) a small deformation reversible up to a few hours after loading and non-reversible thereafter. It is suggested that the deforma-tional response of the material to load is dependent on hygrometric conditions to such a degree as to make the resulting quantitative differences seem like differences of quality. The various rheological parameters were determined.
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