Salt weathering in granitoids: an overview on the controlling factors

Rock Features and Alteration of Stone Materials Used for the Built Environment: A Review of Recent Publications on Ageing Tests

“…In freeze-thaw tests with diverse rock types (basalt, diabases, dolostones, gneiss, granite, limestones, and sandstone), susceptibility was higher for high porosity rocks but was also related to a parameter based on a volumetric fraction of the pore space [26]. The effects of salt weathering on granites have been found to be related to higher porosity but also to pore-size distribution [52]. Differences in the patterns of salt weathering of two limestone types were related to differences in pore size distribution with the most affected limestone being the most porous one and the one with smaller pore size [52].…”

“…The effects of salt weathering on granites have been found to be related to higher porosity but also to pore-size distribution [52]. Differences in the patterns of salt weathering of two limestone types were related to differences in pore size distribution with the most affected limestone being the most porous one and the one with smaller pore size [52]. A study with several tuffs reported that those with micropores dominance were particularly affected by salt weathering [47].…”

“…In trachytes, salt weathering affects fronts with iron oxides and hydroxides [15]. But it has been proposed that sericite and clay minerals can have a sealing effect in granite cracks, limiting water movement and diminishing the impact of salt weathering [52].…”

Suitable Re-Use of Abandoned Quarries for Restoration and Conservation of the Old City of Salamanca—World Heritage Site

“…Previous published characterisations showed high variations in some of the physical and mechanical properties [5,11], but a work that is being carried out at present will show that these characteristics are closely related to the different states of weathering of the rock, the different outcrops that are found in the area and the direction of the testing, regarding the sub-horizontal foliation always present in this granite ( Table 1). Weathered granites show high irregularity of the physical-mechanical properties, leading to a very different resistance to water action in ashlars from the same quarry [18]. The historic buildings in Salamanca do not show a high degree of alteration, and this behaviour is a sign that some selection was made by quarrymen at the time, in order to avoid the use of weathering prone granite.…”

Approaches to the Study of Salt Weathering of Geological Materials

“…Laboratory studies are, in general, more frequent than field studies (around 50% more), with diverse types of salts and weathering conditions (for recent reviews on laboratory salt weathering testing see Alves et al [5], Lubelli et al [6]). In the selected set, the main rock types are volcanic rocks (Seiki et al [3]; Yu & Oguchi [7]; Yavuz [8]; López-Doncel et al [9]; Germinario et al [10]; Özşen et al [11]; Çelik & Aygün [12]; Martínez-Martínez et al [13]; Pötzl et al [14]; Sato & Hattanji [15]; Zalooli et al [16]), being dominated by studies of pyroclastic rocks, and plutonic rocks (Cámara et al [4]; Yu & Oguchi [7]; López-Arce et al [17]; Silva et al [18]; Vázquez et al [19]; Cerrillo et al [20]; Martins et al [21]; Sousa et al [22]; Vázquez-Nion et al [23]; Graus et al [24]) with granite being dominant in this subset. In our present review we found fewer publications concerning laboratory testing of metamorphic rocks; most of them studying marbles (Vázquez et al [19]; Martínez-Martínez et al [25]; Navarro et al [26]; Vazquez et al [27]) with one studying gneiss (Ricardo et al [28]) but none in slates or schists.…”