Building Stones

Siegesmund, Siegfried; Török, Ákos

doi:10.1007/978-3-642-45155-3_2

Cited by 23 publications

(19 citation statements)

References 32 publications

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“…The building stone industry is an important sector of raw material extraction in more than 50 countries around the world. The world leaders in the production of building stones are a few Asian countries, Brazil and the European Union (Siegesmund & Török, 2014).…”

Section: Building Stones As Mineral Raw Materialsmentioning

confidence: 99%

Joint Analysis as an Important Tool for an Optimizing Block Extraction of Natural Stones

Schneider-Löbens

Siegesmund

Stein³

et al. 2021

Preprint

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The steadily increasing demand on the natural stone market is accompanied by a predominantly poor economic balance in the extraction of the raw material "ornamental stone". Thus, the net production of raw blocks is far too low in relation to the resulting overburden, which is often the result of insufficient geoscientific input and evaluation of the deposit itself and the deposit-controlling factors.Under these conditions, the investigation pursued the goal of capturing an essential part of the geological conditions with the analytical observation of the fractures systems, in order to contribute to an optimized stone extraction. Only by critically derived constraints on the quarrying process based on the geological situation can the economic viability of natural stone deposits be maintained or increased in the long term, and this from an environmentally friendly point of view.Profitable dimensional stone production mainly depends on the number of extracted blocks. Compared to statistical approaches the application of the 3D-BlockExpert computer code is based on modelling the block sizes on the discontinuity system such as fracture spacing and fracture orientation. The assessment of all joint and fracture systems provides a forwards-looking approach for sustainable quarry management. It is essential to make the best possible use of high-quality material and to minimize the impact of quarrying activities to nature. Investigations were carried out in quarry areas of different lithologies in Germany and Spain like sandstones, limestones, slate and granites. The block sizes, the irregularity of acute-angled blocks and the waste to block ratio controls the economic success by avoiding time- and cost-consuming procedures based on geoscientific considerations.

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Section: Building Stones As Mineral Raw Materialsmentioning

confidence: 99%

Joint Analysis as an Important Tool for an Optimizing Block Extraction of Natural Stones

Schneider-Löbens

Siegesmund

Stein³

et al. 2021

Preprint

Self Cite

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“…The study area is at Iyuku in Etsako East Local government area in Edo State, Nigeria. It is located between latitude 07 o 08 1 22 1 N to 07 o 10 1 00 1 W and longitude 06 o 14 1 18 1 E to 06 o 161 00 1 E Figure-1. The study area is part of the southwestern Nigerian Basement Complex.…”

Section: Location and Geology Of Study Areamentioning

confidence: 99%

“…To ascertain the suitability of rock aggregates for any engineering construction purpose, it is mandatory to subject them to various tests according to local and international standards. Siegesmund and Torok [1] opined that rock aggregates must be of high quality for optimum utility in the engineering construction industry. Egesi and Tse [2] noted that rocks respond differently to a variety of stresses according to usage in construction projects and this largely depends on the properties of the aggregates.…”

Section: Introductionmentioning

confidence: 99%

Petrography and Physicomechanical Characteristics of Iyuku Granite, Southwestern Nigeria

Ugbe

2020

eijs

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Petrography and physicomechanical characteristics of Iyuku granite from southwestern Nigeria were investigated. Rock and aggregate samples were obtained from five different quarry sites for thin-sectioning and physical and mechanical tests. The rock slides were subjected to petrographic analysis, while the aggregates were tested for the parameters of specific gravity (S.G), water absorption, aggregate impact value (AIV), aggregate crushing value (ACV), Los Angeles abrasion value (LAAV), and flakiness and elongation indices in accordance with the British Standards (B.S), American Standards for Testing Materials (ASTM) and Federal Ministry of Works Standards (FMWS). The petrographic, physical, and mechanical characteristics were described by bar charts and linear graphs. The results revealed that the rocks are of medium to coarse interlocking grains, with no evidence of weathering influences, and quartz content ranging from 17% to 35%. The aggregates showed appreciable high S.G. values, very low water absorption values and low maximum permission limits for AIV, ACV and LAAV when compared with different standards. All the aggregates are adjudged to be generally strong and durable for road construction, but those with higher quartz contents are more preferable. Significant statistical correlations were established among both physical and mechanical tests conducted.

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“…Az emissziós leltár eredményeit az orvostudományon kívül más tudományterület is hasznosíthatja. A földtudományok és a mérnöki tudományok területén például a légszennyezőanyagok szerkezeti anyagokra, építőkövekre kifejtett káros hatását vizsgálják [19][20][21][22][23][24][25].…”

Section: öSszefoglalásunclassified

A közúti közlekedésből származó emiszszió-számítás módszertana és térbeli ábrázolása – Elmélet és gyakorlat

Farkas¹

2018

Közlekedéstudományi Szemle

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A nagy távolságra jutó, országhatárokon átterjedő levegőszennyezésről szóló egyezmény keretében minden évben elkészül Magyarország emissziós leltára, amely a közlekedés mellett az ipar, energiaszektor, hulladékgazdálkodás, mezőgazdaság, valamint a háztartások kibocsátását is tartalmazza. Az eredmények térbeli megjelenítése négyévente kötelező. A számítás, valamint az ábrázolás jóságát azonban jelentősen befolyásolja a feldolgozott adatok részletessége.

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Building Stones

Cited by 23 publications

References 32 publications

Joint Analysis as an Important Tool for an Optimizing Block Extraction of Natural Stones

Joint Analysis as an Important Tool for an Optimizing Block Extraction of Natural Stones

Petrography and Physicomechanical Characteristics of Iyuku Granite, Southwestern Nigeria

A közúti közlekedésből származó emiszszió-számítás módszertana és térbeli ábrázolása – Elmélet és gyakorlat

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