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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 Parameter Study of Factors Affecting Time-Dependent Slab Deflections
Author(s): Andrew Scanlon
Publication: Special Publication
Appears on pages(s): 53-88
Keywords: columns (supports); concrete slabs; cracking (fractur-ing);
creep properties; deflection; finite element method; loads --- (forces); reinforced concrete; reinforcing steels; shrinkage;
span-depth ratio; structural analysis; tensile properties.
Abstract:The results of a parameter study of factors affecting time-dependent slab deflections are presented. The study is based on a finite element plate-bending analysis. Concrete is treated as an ageing linear viscoelastic material and the effects of shrinkage and cracking are included. Factors studied include creep and shrinkage, tensile behaviour of concrete, span to depth ratio, column width to span ratio, loading history, and reinforcement layout. A brief assessment is made of simplified procedures for computing slab deflections.
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