Impact of capillary rise orientation on sodium chloride-induced alteration of Rabat calcarenite stone
More details
Hide details
1
Department of Physics, Higher Normal School, Mohammed V University, Rabat, Morocco
2
Laboratory of Solid State Physics, Department of Physics, Faculty of Science Dhar El Mahraz, Sidi Mohamed Ben Abdellah University, Fez, Morocco
3
Laboratory of Civil Engineering and Environment, Higher School of Technology of Salé, Mohammed V University, Rabat, Morocco
4
University of Lorraine, ENSG, UMR 7359-GeoRessources, Nancy, France
5
Laboratory of Materials, Nanotechnologies and Environment, Faculty of Science, Mohammed V University, Rabat, Morocco
Corresponding author
ABDELAALI RAHMOUNI
Laboratory of Solid State Physics, Department of Physics, Faculty of Science Dhar El Mahraz, Sidi Mohamed Ben Abdellah University, Fez, Morocco
KEYWORDS
TOPICS
ABSTRACT
The present work aims to investigate, through an experimental approach, the impacts of bedding plane orientation and salt concentration on the deterioration of calcarenite due to salt precipitation. This study concerns two sets of unaltered samples extracted parallel and perpendicular to the stratification plane. Imbibition-drying cycles were performed using sodium chloride saline solutions with concentrations of 15 g/L and 45 g/L. At the end of the test, various measurement and characterization techniques were used to analyze any changes in the samples. The results of capillary imbibition kinetics show that the stone’s orientation with respect to the stratification plane, the salt concentration, and the material’s porosity are critical factors influencing its weathering. Mercury porosimetry analysis further indicates that halite predominantly precipitates on the sample’s surface, leading to efflorescence, while only a minimal or negligible amount of salt crystals forms within the porous media (subflorescence).