A multi-technique approach for the determination of the porous structure of building stone

作者：Barbera Giovanni; Barone Germana; Crupi Vincenza; Longo Francesca; Maisano Giacomo; Majolino Domenico; Mazzoleni Paolo^*; Raneri Simona; Teixeira Jose; Venuti Valentina

来源：European Journal of Mineralogy, 2014, 26(1): 189-198.

DOI：10.1127/0935-1221/2014/0026-2355

• small angle neutron scattering
• mercury intrusion porosimetry
• petrography
• calcarenites
• fractal dimension
• rock physics

The complete knowledge of the porous structure of rocks is necessarily requested for the prediction of the damages induced by salt crystallization. Nevertheless, the geometric description of the porous structure is usually very difficult because of the variability of the size distribution of voids, ranging from nanometers to millimeters, which generally is not accessible by a single methodology. For this reason, a multi-technique approach was used here: the investigation at sub-micrometric dimensional scale (%26gt; 0.004 mm) was carried out by Hg intrusion porosimetry (MIP), whereas the study at the nanoscale required Small Angle Neutron Scattering (SANS) analysis. All the results were interpreted in the framework of a fractal model. The analyses were performed on limestones of different geological formations, cropping out in south-eastern Sicily and largely used as building stones in Baroque monuments of the Noto Valley (belonging to the UNESCO Heritage List).

• 出版日期2014-2
• 单位中国地震局