Title: Determination of Concrete Total Deformations under Load as Function of Shrinkage Value

Author(s): Gerard Pons, Philippe Munoz, and Gilles Escadeillas

Publication: Materials Journal

Volume: 100

Issue: 1

Appears on pages(s): 14-20

Keywords: concrete; creep; shrinkage; strain.

DOI: 10.14359/12458

Date: 1/1/2003

Abstract:
Experimental studies on concrete behavior, with either traditional strength or high- (HSC) and even very high-performance concrete, made it possible to highlight the very close links that exist between delayed deformations under load, thus including creep, and the spontaneous deformations of shrinkage. This phenomenological approach made it possible to propose a new model of the delayed deformations. The computation requires the relation to be divided into three terms: the first term is linked to the instantaneous deformation and is a function of concrete strength during loading; a linear relation directly links the second term to shrinkage and it accounts for the majority of the delayed deformation; and finally, in some cases, there is a third term that accounts for creep deformation after shrinkage has stopped.