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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: Fatigue of Plain Concrete
Author(s): Thomas T. C. Hsu
Publication: Journal Proceedings
Appears on pages(s): 292-305
Keywords: compression tests: compressive strength; concretes; cyclic loads;
fatigue (materials); fatigue tests, flexural strength; loading rate; strength;
Abstract:Fatigue strength of plain concrete is usually presented by the f-N curve (stress versus number of cycles). This curve has recently been extended to include the parameter R, where R is the ratio of minimum stress to maximum stress. This development results in a three-variable f-N-R relationship. This paper presents a more general four-variable f-N-T-R relationship for predicting the fatigue strength of concrete. This relationship incorporates the new dimension of T, which is the period of repetitive loading. Since T represents the rate of loading, and the product of T and N represents the duration of loading, this four-variable relationship simultaneously accounts for the time effect and the effect of loading rate. Based on the f-N-T-R relationship, two equations are proposed for the prediction of fatigue strength of concrete, one for the high-cycle fatigue and one for low-cycle fatigue. These equations have been substantiated by compressive and flexural tests reported in literature.
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