Petrophysical properties and durability of granites employed as building stone: a comprehensive evaluation

Sousa, Luís

doi:10.1007/s10064-013-0553-9

Cited by 55 publications

(23 citation statements)

References 115 publications

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“…Yildiz et al, 2010;Yilmaz et al, 2011;Basu et al, 2012;Coggan et al, 2013;Sousa, 2014;Sajid and Arif, 2015). Different textural properties have been described in these studies which have controlling role on mechanical nature of granites.…”

Section: Controls Of Textural Features On Rock Mechanicsmentioning

confidence: 99%

“…The understandings have also been successfully used for other rock types including dolerite, serpentinite, limestone, sandstone, quartzite, amphibolite and argillite. Rigopoulos et al (2013;2014) described the micropetrographic index for basic and ultrabasic rocks which demonstrate the effect of secondary processes on the mechanical nature of these rocks. The interaction of fractures formed during the compressional testing with mineral grains and mineral boundaries revealed predominant intra-granular fracturing due to alteration of minerals in troctolites (Rigopoulos et al, 2013).…”

Section: Textural Description Of Rockmentioning

confidence: 99%

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Petrographic features as an effective indicator for the variation in strength of granites

Sajid

Coggan

Arif

et al. 2016

Engineering Geology

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The important textural features include average grain size of rock, grain boundary recrystallization, maximum grain size of major rock forming minerals, mean grain size of cleaved minerals, mineral exsolution and variation of grain size within a rock. The petrographic observations, however, are more effective to describe the strength variation of granites having analogous weathering grade as change in degree of weathering has a dominant effect on rock mechanics.

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Section: Controls Of Textural Features On Rock Mechanicsmentioning

confidence: 99%

Section: Textural Description Of Rockmentioning

confidence: 99%

Petrographic features as an effective indicator for the variation in strength of granites

Sajid

Coggan

Arif

et al. 2016

Engineering Geology

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“…The conversion from dynamic to static modules was based on Sousa's (2014) equation : E st =0.99E dyn -0.92.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Freeze–thaw fracturing in building granites

Freire-Lista

Fort

Varas–Muriel

2015

Cold Regions Science and Technology

132

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“…for each plane (R, G and HW) were then merged into a single image over which five equidistant 15 mm parallel lines have been drawn were divided into two groups. The number of microcracks cutting across these lines was counted to calculate linear microcrack density (Sousa, 2014). The microcracks were grouped by the type of crystal (quartz (Qz), plagioclase (Pl), potassium feldspar (K-Fsp) or biotite mineral (Bt)) affected and their location (inter-or intracrystalline).…”

Section: Fractographymentioning

confidence: 99%

Exfoliation microcracks in building granite. Implications for anisotropy

Freire-Lista

Fort

2017

Engineering Geology

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Granite is found in many world heritage monuments and cities. It continues to be one of the most widely used stones in today's construction, given its abundance, uniformity and durability. Quarrymen traditionally cut this rock along its orthogonal slip planes, where splitting is easier. Ranked by ease of splitting, these planes are rift, grain and hardway. Granite is traditionally quarried along the rift plane where coplanar exfoliaton microcracks coalesce developing a flat surface. This splitting surface minimizes the cost and effort of subsequent hewing. Rift plane was predominantly used on the fair face of ashlars in heritage buildings worldwide. Determining the petrographic and petrophysical behaviour of these three orthogonal splitting planes in granite is instrumental to understanding decay in ashlars and sculptures. The decay of building granite is different in each splitting plane. Alpedrete granite was the stone selected for this study based on the orientation and distribution of exfoliation microcracks and the characterisation of their implications for the anisotropy of petrophysical properties such as ultrasonic wave propagation, capillarity, air permeability, micro-roughness and surface hardness. Inter-and intracrystalline microcrack length and spacing were also measured and quantified. The findings show that the splitting planes in Alpedrete granite are determined by the orientation of exfoliation microcracks, which as a rule are generally straight and intracrystalline and determine the anisotropy of the petrophysical properties analysed. Splitting planes are the orientation that should be applied when performing laboratory tests for the petrographic and petrophysical properties of building granite.

show abstract

Petrophysical properties and durability of granites employed as building stone: a comprehensive evaluation

Cited by 55 publications

References 115 publications

Petrographic features as an effective indicator for the variation in strength of granites

Petrographic features as an effective indicator for the variation in strength of granites

Freeze–thaw fracturing in building granites

Exfoliation microcracks in building granite. Implications for anisotropy

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