Weathering of limestone after several decades in an urban environment

Mandana Saheb (1) , Anne Chabas (1) , Jean-Didier Mertz (2) , Estel Colas (2) , Olivier Rozenbaum (3, 4) , Jean-Pierre Sizun (5) , Sophie Nowak (6) , Lucile Gentaz (1) , Aurélie Verney-Carron (1)

1 LISA (UMR_7583) - Laboratoire Interuniversitaire des Systèmes Atmosphériques
2 LRMH - Laboratoire de recherche des monuments historiques
3 ISTO - Institut des Sciences de la Terre d'Orléans - UMR7327
4 Milieux Poreux - UMR7327
5 LCE - Laboratoire Chrono-environnement (UMR 6249)
6 ITODYS (UMR_7086) - Interfaces, Traitements, Organisation et Dynamique des Systèmes

The alteration of “Saint-Maximin Roche fine” limestones exposed to the Parisian urban environment during more than 60 years has been studied. It leads to changes of the texture and morphology, to the neo-formation of gypsum on the subsurface and to the deposition of carbon containing phases on the surface. Depending on the location of the blocks on the monuments, the alteration states are different related to different water activities that could influence the further alteration processes. The multiscale characterization has enabled to correlate the macrometric properties to the mesoscopic behavior, what is essential to understand the alteration mechanisms.

Keywords: Raman spectroscopy; SEM; Stonework; XRD; Atmospheric corrosion

Domains: Materials; Cultural heritage and museology; Environmental Sciences

Mandana Saheb, Anne Chabas, Jean-Didier Mertz, Estel Colas, Olivier Rozenbaum, et al.. Weathering of limestone after several decades in an urban environment. Corrosion Science, 2016, 111, pp.742-752. ⟨10.1016/j.corsci.2016.06.015⟩. ⟨insu-01333413⟩