J. Phys. IV France
Volume 136, November 2006
Page(s) 99 - 107
Publié en ligne 22 décembre 2006
Corrosion and Long Term Performance of Concrete in NPP and Waste Facilities
V. L'Hostis, F. Foct and D. Féron
J. Phys. IV France 136 (2006) 99-107

DOI: 10.1051/jp4:2006136011

Mechanical properties of an iron oxide formed by corrosion in reinforced concrete structures

A. Ouglova1, 2, M. François1, Y. Berthaud1, S. Caré3 and F. Foct2

1  LMT Cachan, 61 Av. Pt. Wilson, 94235 Cachan, France
2  EDF R&D, Dép. MMC, Av. des Renardières, 77818 Moret-sur-Loing Cedex, France
3  LMSGC, Institut Navier, 2 allée Kepler, 77420 Champs-sur-Marne, France

(Published online 22 December 2006)

The paper deals with elastic properties of iron oxides formed in reinforced concrete structures. Due to the difficulty to perform mechanical tests on the real oxides presented in the form of (multiple) laminated stratums, the elastic modulus of iron oxides remains unknown. Young's moduli of porous compact "synthetic oxides" in powder form, obtained in laboratory conditions, were measured from both acoustic measurements and oedometric tests. The elastic modulus of the compact polycrystalline iron oxide is deduced with respect to two models, a micromechanical one and a Hertz' theory. The full method is validated on a well-known material, the alumina.

© EDP Sciences 2006