Evaluation of joints in granitic outcrops for dimension stone exploitation

Sousa, Luís

doi:10.1144/1470-9236/08-076

Cited by 31 publications

(32 citation statements)

References 29 publications

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“…This is in accordance with the joint set frequency measured for both quarries (Fig. 21e, f) and the results acquired by applying the method of Singewald (1992), Palmstrøm (1982Palmstrøm ( , 1996Palmstrøm ( , 2001, and Sousa (2010) (Table 6; Fig. 16).…”

Section: Block Sizessupporting

confidence: 89%

“…Fig. 16 Block sizes of the different quarries analyzed using three different methods Singewald (1992), Palmstrøm (1982Palmstrøm ( , 1996Palmstrøm ( , 2001, and Sousa (2010) The syenitoid group shows very different values. Salmon Red is in the upper quartile (15.6 MPa), the Violeta Imperial value is lower than the lower quartile (10.0 MPa), and Artigas Pearl is 8.3 MPa.…”

Section: Flexural Strengthmentioning

confidence: 99%

“…This can be done as described by Singewald (1992), Palmstrøm (1982Palmstrøm ( , 1996Palmstrøm ( , 2001, and Sousa (2010). All these authors use the joint set frequency to estimate the mean or median block sizes.…”

Section: Block Sizesmentioning

confidence: 99%

“…4). Sousa (2010) uses Jmed (median volumetric joint count) (See Eq. 5); the block volume was calculated afterward using (Eq.…”

Section: Block Sizesmentioning

confidence: 99%

“…16). Table 6 shows that the Sousa (2010) is the most conservative estimation, since it uses the median and not the average joint spacing as the other methods. For all the cases analyzed the joints were measured and afterward their spacing, taking into account to which joint set they belong.…”

Section: Block Sizesmentioning

confidence: 99%

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Granitic dimensional stones in Uruguay: evaluation and assessment of potential resources

Demarco

Oyhantçabal

Stein³

et al. 2012

Environ Earth Sci

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In Uruguay commercial granite varieties comprise mafic rocks, granitoids, and syenitoids. There is a long tradition in Uruguay, as well as worldwide, of using dimensional stones in architecture and art, specially granitic ones. Some of the present applications of these dimensional stones are as façade cladding, countertops, and outdoor and indoor floor slabs. The color spectrum of the Uruguayan granitic dimensional stones varies from black to light gray, covering a wide variety of red and pink and minor greenish-gray. The décor of these granitic dimensional stones is mainly determined by their fabric, fundamentally the grain size and the color distribution between the different minerals that compose the rocks. In the present research the most important commercial granites were sampled to analyze their petrography and petrophysical properties. A detailed structural analysis has been performed in several deposits, as well as the application of the software 3D Block Expert for modeling the possible raw block size distribution. Other factors controlling the mining viability of the deposits were also studied (e.g., homogeneity/heterogeneity of color and décor) and the possible reserves were calculated.

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Section: Block Sizessupporting

confidence: 89%

Section: Flexural Strengthmentioning

confidence: 99%

Section: Block Sizesmentioning

confidence: 99%

“…4). Sousa (2010) uses Jmed (median volumetric joint count) (See Eq. 5); the block volume was calculated afterward using (Eq.…”

Section: Block Sizesmentioning

confidence: 99%

Section: Block Sizesmentioning

confidence: 99%