Title:
Stresses in Early-Age Concrete: Comparison of Different
Creep Models
Author(s):
lsabelle Guenot, Jean-Michel Torrenti, and Pierre Laplante
Publication:
Materials Journal
Volume:
93
Issue:
3
Appears on pages(s):
246-253
Keywords:
creep properties;
thermal stresses.
hydration reaction rates; strains; temperature;
DOI:
10.14359/9809
Date:
5/1/1996
Abstract:
Creep plays a significant part in the evolution of thermal stresses and in the risk of cracking in early-age concrete; it therefore has to be taken into account in the calculation of mechanical effects resulting from the temperature fields brought about by the exothermy of the hydration reaction of cement. This article presents a comparative analysis of different creep models taken from the literature and inserted in a uniaxial calculation of total strains (creep strain included) of a concrete member The calculations are carried out in parallel using the principle of superposition (linear vis-coelasticity) and an incremental model, respectively, and tested on data and results from an existing experimental case.