Document Archives

Fatigue of Plain Concrete

• ID:

  903

• ESCSI:

  4324.004

• Author:

  Hsu, T.T.C.

• Publication Name:

  ACI Journal

• Type of Publication:

  Article

• Publisher:

  ACI

• Dated:

  1981

• Issue/Volume:

  July-August

• Other ID:

• Page(s):

  292-305

• Reference List:

  Y

• 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.