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. Foct21 LMT Cachan, 61 Av. Pt. Wilson, 94235 Cachan, France
e-mail: berthaud@lmt.ens-cachan.fr
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)
Abstract
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