Maintenance des ouvrages d'art : Deux nouveaux essais pour la maintenance et la réparation des structures de génie civil
Résumé
The maintenance of the civil engineering structures integrates phases of inspection, investigations, re-calculation, diagnosis and repair. In these various phases, the tests play an important role, and the purpose of this article is to present two new tests. The first one is concerning a shear test by direct tension which aims at characterizing the glued interface between a composite strengthening system and a reinforced concrete structure, in particular the anchoring length of the composite. The second test has for objective to measure the residual expansion of a core taken from a structure which is affected by an internal sulphate reaction due to the delayed ettringite formation, this reaction inducing a swelling and a cracking of the structure.