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Experimental Study of Concrete Strength Under Sustained Stress

• ID:

  563

• ESCSI:

  4250.004

• Author:

  Foure, Bernard

• Publication Name:

  Ann. Institute Tech. Batim Trav. Publics

• Type of Publication:

  Journal

• Publisher:

  Unite Essais et Etudes des Structures

• Dated:

  1985

• Issue/Volume:

  June, Vol. 38, No. 435

• Other ID:

• Page(s):

  1-23

• Reference List:

  Y

• Abstract:

  The results of several test series on concrete specimens subjected to constant loading-till failure are presented. The study deals with normalweight concrete (with normal strength lower than 50 MPa, and some results for high strength over 70 MPa) and lightweight concrete, under compressive as well as tensile stresses. After a synthesis with other published results, empirical relations are proposed for failure under sustained loading. They express the ratio of sustained failure stress to instantaneous strength at the age of failure, as a function of the duration of loading till failure. These relations are independent of age at loading, concrete strength, type of stress (compression or tension). Theyt depend on the type of concrete, normal- or lightweight. In French.