NDLI: Classification of black decorative stones from Warangal District, Andhra Pradesh, India

Content Provider	Springer Nature Link
Author	Chatterjee, Tarun Kumar Chatterjee, Rima Singh, S. K.
Copyright Year	2004
Abstract	Despite abundant usage of Indian black decorative stones, no systematic approach has been made to study their properties. In this paper an attempt has been made to study the geoparametrical and geotechnical properties of the stones from ten active quarries in the Dornakal-Balpao-Venkatayapalem, Warangal district, Andhra Pradesh, India, including colour, hardness, texture, grain size, composition, macro- and micro-joints, specific gravity, dry density, moisture content, water absorption, porosity, uniaxial compressive strength (compressive strength), tensile strength, shear strength, rebound hardness number, point load strength index and rock hardness. Regression analyses were undertaken; the correlation coefficient obtained from ranged from 0.80–0.96. On the basis of these results, a new classification system for black decorative stone is proposed with four classes ranging from I (very good) to IV (poor). It is appreciated that the classification is based on limited data but it provides an important advance with implications for improving the present ad hoc, often wasteful quarrying philosophy in India.Malgré l’usage important, en Inde, de roches ornementales de teinte foncée, aucune approche systématique n’a été réalisée pour étudier leurs propriétés. Dans cet article une méthode est proposée pour étudier les propriétés pétrophysiques et géotechniques de ces roches issues de dix carrières en activité dans la région de Dornakal-Balpao-Venkatayapalem, district de Warangal, état d’Andhra Pradesh. Les propriétés ou caractéristiques considérées sont: la couleur, la dureté, la texture, la granularité, la composition minéralogique, la présence de macro ou micro fissures, le poids spécifique, la densité sèche, la teneur en eau, la capacité d’absorption d’eau, la porosité, la résistance à la compression simple, la résistance à la traction, la résistance au cisaillement, la valeur de rebond au scléromètre et l’indice de résistance entre pointes. Des analyses de régression ont été réalisées, les coefficients de corrélation obtenus variant de 0,80–0,96. Sur la base de ces résultats, un nouveau système de classification des roches ornementales de teinte foncée est proposé, avec quatre classes, de I (très bon) à IV (médiocre). Il faut retenir que la classification est fondée sur un nombre limité de données et représente une avancée importante par rapport à la situation présente, susceptible d’améliorer la rentabilité des carrières considérées.
Starting Page	167
Ending Page	173
Page Count	7
File Format	PDF
ISSN	14359529
Journal	Bulletin of the International Association of Engineering Geology - Bulletin de l'Association Internationale de Géologie de l'Ingénieur
Volume Number	64
Issue Number	2
e-ISSN	14359537
Language	English
Publisher	Springer-Verlag
Publisher Date	2004-11-11
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Roches ornementales Propriétés géotechniques Corrélations Classification Inde
Content Type	Text
Resource Type	Article
Subject	Geology Geotechnical Engineering and Engineering Geology

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