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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: Evaluation of Creep Strains and Stress Redistribution in RC Columns
Author(s): P. Balaguru and Edward G. Nawy
Publication: Special Publication
Appears on pages(s): 309-324
Keywords: columns (supports); creep properties; eccentric loads; rein-forced
concrete; reinforcing steels; shrinkage; strains; stresses; viscos-ity.
Abstract:An analytical method to calculate the time dependent stresses and strains in RC columns is presented. Linear viscoelastic models are used to simulate the time dependent behavior of both plain and reinforced concrete. Both concentrically and eccentrically loaded columns are considered. The experimental results are used to obtain the parameters of the model, namely the spring constants and viscosity coefficients. For the concentrically loaded column, the proposed method is compared with the available experimental results. The model predictions are reasonably accurate. A flow chart presents the sequence of operations for the time dependent analysis of concentrical-ly loaded columns. Numerical examples are also presented to further clarify the calculation procedures.
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