Experimental study of Chemical deterioration
of Chellah Monument stones
A. Samaouali1*, L. Laanab3, Y. Geraud4, A. Nounah2, M. Boukalouch1
1 Laboratoire de Thermodynamique, Département de Physique, Faculté des Sciences, B. P. 1014, Rabat. Maroc
2 Laboratoire des Sciences de l’Environnement, Ecole Supérieure de Technologie, B.P. 227, Salé Médina, Maroc
3 Centre de Microscopie, Département de Physique, Faculté des Sciences, B. P. 1014, Rabat. Maroc
4 Ecole et Observatoire des Sciences de
Institut de Physique du Globe Strasbourg UMR 7516, 1 rue de Blessing, F-67084 Strasbourg Cedex, France
* Corresponding author. E-mail: firstname.lastname@example.org
Received: 26 June 2008; revised version accepted: 30 October 2008
The stones of the site monument Chellah Roman are mainly made up of limestone resulting from a quarry of the
X-ray spectrometer (SEM-EDX) and X-ray diffraction, on the stones Chellah monument. The objective is to highlight the structural and chemical difference between the altered and unaltered samples. The stones studied present various structural, morphological and chemical properties, which can be explained throughout a mechanism of dissolution of the calcite bringing into, play various chemical reactions. This mechanism is mainly activated by the filtration of rainwater accompanied by an increase in the acidity of the medium.
Keywords: Calcarenite rocks decay; Dissolution calcite; Chemical weathering.