Ornamental granites: Relationships between p-waves velocity, water capillary absorption and the crack network

Petrophysical and mineralogical evolution of weathered crystalline basement in western Uganda: Implications for fluid transfer and storage

“…However, such data for more highly weathered facies appear to be scarce in the lit-erature. For instance, the sharp wave velocity and permeability variations from fresh to intermediately weathered samples are comparable to those described for granite rocks within fault zones or to variations observed in samples that have been experimentally strained (Nur and Simmons, 1969;Kowallis and Wang, 1983;Pros et al, 1998;Chaki et al, 2008;Va źquez et al, 2010;Staneˇk et al, 2013). These variations are generally described as a result of a crack network modification (Walsh and Brace, 1984;Bernabe ́ , 1986).…”

Influence of mineralogy on granite decay induced by temperature increase: Experimental observations and stress simulation

“…In this case, rock's thermal behavior depends not only on mineralogy, but also on the proportion of each mineral in the rock, size, texture, orientation, and elastic properties as well as the anisotropy in thermal expansion of each mineral (Vázquez et al, 2011). Therefore, thermal deterioration and the way microcracks generate and grow are related to thermal diffusion, thermal expansion, mineralogy, maximum temperature attained and how quickly this is reached, as well as on, porosity, grain size and other textural factors Castro de Lima and Paraguassú, 2004;Shao et al, 1999;Vázquez et al, 2010).…”

“…Microcracking patterns and the distribution of intergranular and intragranular microcracks on granites have been studied before (Kudo et al, 1992;Nasseri et al, 2005;Takemura et al, 2003;Vázquez et al, 2010) and after they were affected by fires (Gómez-Heras et al, 2006b;Nasseri et al, 2007). Mineralogy is known to play an important role in granite thermal degradation.…”

Evolution of surface properties of ornamental granitoids exposed to high temperatures

“…Ornamental granitoids are characterized by a low porosity and, therefore, decay less in terms of overall strength in comparison to other stone types when subject to weathering agents such as salt crystallization or freezing [29][30][31]. However, granitoids may show intense changes of surface properties, such as gloss, colour or roughness, which may lead to inadmissible aesthetic damage when these are used as ornamental stone [29,[32][33][34].…”