Physical properties and textural parameters of calcarenitic rocks: qualitative and quantitative evaluations

Andriani, Gioacchino Francesco; Walsh, Nicola

doi:10.1016/s0013-7952(02)00106-0

Cited by 102 publications

(43 citation statements)

References 13 publications

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“…On the contrary, probably quarry blasts have been identified in the Murgia district (black circle in Fig. 8) where, besides lawful mining-for example the three calcarenite areas described in Adriani and Walsh (2002), unauthorized mining is a real problem (Legambiente 2008) and it affects the whole region of Puglia. This result shows another possible use of the algorithm: the localization of unknown or illegal excavation areas.…”

Section: Romaniamentioning

confidence: 99%

Detection of quarry and mine blast contamination in European regional catalogues

Gulia

2009

Nat Hazards

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The presence of quarry and mine blasts in seismic catalogues is detected using the Wiemer and Baer (Bull Seism Soc Am 90 (2): [525][526][527][528][529][530] 2000) algorithm. The procedure is based on the observation that quarry blasts generally take place during daytime hours: the areas with a high ratio of daytime and night-time events are likely to be regions with quarry activity. In the first part of this work we have tested the method, using both a synthetic and a regional catalogue; in the second part the procedure has been applied to some of the European regional catalogues available on line. The comparison between the results obtained and the location of known quarries and mines for the analysed catalogues confirms the reliability of the methodology in identifying mining areas.

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Section: Romaniamentioning

confidence: 99%

Detection of quarry and mine blast contamination in European regional catalogues

Gulia

2009

Nat Hazards

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“…Sin embargo, en la porosidad es donde se producen las variaciones más importantes. La porosidad abierta, es decir, la accesible a los fluidos, presenta un valor significativamente inferior respecto a la porosidad total, lo que es indicativo de que existe poca conexión entre los poros (Andriani y Walsh, 2002). En lo respecta a otras variedades la AS es la que tiene mayor absorción, porosidad abierta y porosidad total con respecto a las variedades de Blanco o de Gris, lo que puede ser indicativo de una mayor fracturación, o bien que las foliación que presente actúe de zonas preferentes de entrada de fluidos.…”

Section: Caracterización Del Mármol De Macaelunclassified

Characterization of the main types of marble extracted in the area of Macael (Almeria, southeastern Spain) and its historical importance

Navarro¹,

Cruz²,

Arriaga³

et al. 2017

Bol. geol. min.

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The marble from Macael is one of the most important ornamental stones found in Spain. It has been used not only as a building material but also as a decorative element, especially the type known as "White Macael". There is evidence of its use dating back over 4000 years. One of the most prominent examples is the Courtyard of the Lions in the Alhambra (Granada), but it is also possible to see some elements in the Roman amphitheatre of Mérida (Badajoz), in Italica (Sevilla), in the palace of Medina Azahara (Córdoba) and in the Royal Palace of Madrid, amongst dozens of palaces and churches throughout the country. In this study we describe the use that this material has had throughout history and the main features and properties of the different varieties of "White Macael", "Grey Macael", "Anasol" (calcite marbles) and "Yellow Macael" (dolomitic marbles). They all have mineralogical, physical and mechanical features that make them suitable for almost all uses. Calcite marbles have porosity, absorption and density values lower than dolomite marbles, whilst the latter have more resistance to compression, similar flexural strength under concentrated load, and lower resistance to breaking load at dowel hole than the calcitic marbles. The values of abrasion resistance are also better in the dolomite marbles, whilst the slip resistance is similar in all cases. As far as decay is concerned, the dolomitic marbles, with the exception of the variety Amarillo Triana, suffer more in the frost resistance test but less by the action of salts, with the exception of the White Macael Rio (calcitic) which is the variety that has less alteration. Regarding the status of the stone sector in the region, it is noteworthy that, despite a 60% drop in sales in the domestic market, exports in 2012 increased by 49% compared to the previous year. The data we present provides increased knowledge of one of the most common building materials in our country with the aim of optimizing its use by marketing companies and by consumers.

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“…So, there are a lot of engineering problems when underground and open structures are constructed within or on these rocks (Goodman and Ahlgren 2000;Glawe and Upreti 2004;Shafiei and Dusseault 2008;Yasir and Tolgay 2010;Coli et al 2011). The studies show that the most important parameters controlling the strength characteristics of bimrocks are the volumetric block proportion (VBP), matrix and block strength, block shape factors, block direction, and size distribution function (Hawkes and Mellor 1970;Kobayashi and Yoshinaka 1994;Lindquist and Goodman 1994;Andriani and Walsh 2002). In typical bimrocks, as the block strength is more than that of the matrix, there is an increase in the modulus of deformation and friction coefficient by increasing of the VBP up to 75 % and a decrease in the cohesion (Lindquist and Goodman 1994;Coli et al 2011;Barbero et al 2012).…”

Section: Introductionmentioning

confidence: 99%

An investigation into the effects of block size distribution function on the strength of bimrocks based on large-scale laboratory tests

Mahdevari

Maarefvand

2016

Arab J Geosci

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Considering the geomechanical characteristics of rocks which are a mixture of rock blocks embedded in fine grain matrix can be challenging due to their complex structure and difficulty in preparing representative in situ or laboratory samples. In the literature, this group of rocks is called block in matrix Rocks (bimrocks). In this paper, the effects of volumetric block proportion (VBP), maximum block size, and distribution function on the compressive strength and failure patterns of these rocks were considered by executing the unconfined compressive test on large-scale synthetic samples. The compressive strength of bimrocks was found to have a direct relation with VBP and maximum block size and an indirect one with fractal dimension in accordance with multivariable regression analysis. The fracture patterns of remolded samples were changed from an inter-granular facture to a matrix and between-granular one by the reducing the VBP and increasing the fractal dimension. In addition, the failure mechanism was spalling for the low values of VBP and the high values of fractal dimension and it was changed to shear failure by increasing VBP and decreasing fractal dimension.

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Physical properties and textural parameters of calcarenitic rocks: qualitative and quantitative evaluations

Cited by 102 publications

References 13 publications

Detection of quarry and mine blast contamination in European regional catalogues

Detection of quarry and mine blast contamination in European regional catalogues

Characterization of the main types of marble extracted in the area of Macael (Almeria, southeastern Spain) and its historical importance

An investigation into the effects of block size distribution function on the strength of bimrocks based on large-scale laboratory tests

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