NDLI: Sawing of blocks of siliceous dimension stone: influence of texture and mineralogy

Content Provider	Springer Nature Link
Author	Ribeiro, Rogério Pinto Paraguassú, Anter Braga Rodrigues, José Eduardo
Copyright Year	2006
Abstract	The sawing of granite blocks using multi-blade gangsaws and an abrasive mixture is one of the most complex operations in the rock transformation industry. The surface quality of the finished slabs is the major determinant of the volume of material to be removed in subsequent polishing operations, thus influencing the final cost of the product. To determine this quality, a portable piece of equipment which records direct measurements of the roughness of the slab surface was developed. The measurements were carried out on two types of granite slabs of high commercial value. These granites showed mineralogical similarities, but great differences in cutting speed and the cost of the industrial process. The paper discusses the results in relation to Knoop hardness, Amsler wear, deep abrasion and petrography and concludes that the texture of the rock has the most important influence on the cost of production of polished slabs.Le sciage de blocs de granite à l’aide de scies multi-lames et de produits abrasifs est l’une des opérations les plus complexes dans l’industrie de transformation des pierres dimensionnelles. La qualité de surface des plaques réalisées contrôle le volume de matériau à enlever dans les opérations de polissage, influençant ainsi le coût du produit final. Afin de déterminer cette qualité, un équipement portatif permettant de mesurer la rugosité des surfaces de ces plaques a été mis au point. Les mesures ont été réalisées sur deux types de plaques de granite de forte valeur commerciale. Ces granites présentaient des caractéristiques minéralogiques semblables, mais de grandes différences dans les vitesses de découpe et le coût du procédé industriel. L’article présente les résultats obtenus relatifs à la pétrographie et aux tests de dureté de Knoop, de résistance au polissage de Amsler, d’abrasivité profonde. Il conclut que la texture de la roche a la plus forte influence sur le coût de production des plaques polies.
Starting Page	101
Ending Page	107
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	66
Issue Number	1
e-ISSN	14359537
Language	English
Publisher	Springer-Verlag
Publisher Date	2006-06-09
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Sciage de blocs Granites Texture Rugosité de surface Nature Conservation Geoecology/Natural Processes Structural Foundations, Hydraulic Engineering Applied Geosciences
Content Type	Text
Resource Type	Article
Subject	Geology Geotechnical Engineering and Engineering Geology

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