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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: Prestressed Concrete - A Simplified Method for Loss Consumption
Author(s): H. N. Grouni
Publication: Journal Proceedings
Appears on pages(s): 108-114
Keywords: creep properties; ductility; prestressed concrete; prestress loss; relaxation; shrinkage; strains; stress relaxation; structural design.
Abstract:Recent code revisions in prestressed concrete coupled with stress-time dependent losses have emphasized the need for a more direct procedure for evaluating prestress losses. The method presented here is simple and fast. It yields results with an accuracy comparable to that obtained by a detailed iterative procedure. The basic relaxation formula is evaluated for various concrete strains to conform to the actual behavior of the prestressed unit. Prestress loss expressions are reduced to their simplest form. Computations are further simplified by use of nomograms.
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