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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: Ultimate Theory in Flexure by Exponential Function
Author(s): G. M. Smith and L. E. Young
Publication: Journal Proceedings
Appears on pages(s): 349-359
Keywords: no keywords
Abstract:Describes an approach to ultimate failure of reinforced concrete beams based upon an exponential function describing the stress-strain curve in flexure. The exponential function and the generally proposed stress block as described by three parameters are compared. The values generally sug-gested for these parameters show a remarkable relationship to the exponent used to describe the stress block in flexure. Expressions for compressive and tensile failure are derived for predicting the ultimate moment of rectangular reinforced concrete beams. The expressions are developed using an exponential function to describe the stress block and an equivalent moment of inertia of the concrete and steel. A comparison of actual ultimate moments with the theoretical moments shows good agreement. Certain assumptions are made as to the stress-strain relationships in flexure which need further experimental verification.
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