Monitoring of the creep and the relaxation behaviour of concrete since setting time, part 1: compression

Claude Boulay (1) , Michela Crespini (1) , Brice Delsaute (2) , Stéphanie Staquet (2)

1 IFSTTAR/MAT - Département Matériaux
2 ULB - Université libre de Bruxelles

This paper (part 1& 2) presents an experimental methodology using two different test rigs enabling a monitoring of the stiffness, the creep or the relaxation of a concrete sample since setting time. Tension and compressive tests realized on a revisited Temperature Stress Testing Machine TSTM [1] at ULB are presented in a second part while compressive tests, realized on another test rig called BTJASPE [2] designed at IFSTTAR, are presented in the first one. In each part, rheological models are used for the description of the experimental set of data. The purpose of this study is to investigate the question of the equivalence between the early age creep and relaxation behaviour of concrete in tension and in compression for a typical reference ordinary concrete in sealed conditions.

Mots clés: BETON JEUNE; FLUAGE; RELAXATION; COMPRESSION; TEMPERATURE; CARACTERISTIQUES

Domaines: Matériaux; Mécanique des matériaux [physics.class-ph]; Mécanique des matériaux [physics.class-ph]

Claude Boulay, Michela Crespini, Brice Delsaute, Stéphanie Staquet. Monitoring of the creep and the relaxation behaviour of concrete since setting time, part 1: compression. Strategies for Sustainable Concrete Structures, May 2012, France. 10p. ⟨hal-00875238⟩