Creep and Creep Recovery of Concrete Subjected to Multiaxial Compressive Stress

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Title: Creep and Creep Recovery of Concrete Subjected to Multiaxial Compressive Stress

Author(s): D. J. Hannant

Publication: Journal Proceedings

Volume: 66

Issue: 5

Appears on pages(s): 391-394

Keywords: compression; concretes; creep properties; creep recovery; creep tests; Poisson’s ratio; research; strain gages; strains; stresses; stress-strain relationships; temperature.

Date: 5/1/1969

Abstract:
Results are given for the creep of concrete under various three dimensional compressive stress systems at two temperatures for a loading period of 2 years. The existence of a creep Poisson’s ratio of a similar magnitude to the elastic Poisson’s ratio has been confirmed and a simple formula is given for the prediction of creep under multiaxial stress systems from the more easily obtained uniaxial creep curves. Creep recovery after the removal of three-dimensional stress systems is shown to bear no direct relation to either measured elastic strain recovery or measured creep magnitude.