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  • London : The Geological Society  (3)
  • Italian Geological Society  (1)
  • Molecular Diversity Preservation International  (1)
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  • 1
    Monographie ausleihbar
    Monographie ausleihbar
    London : The Geological Society
    Dazugehörige Bände
    Signatur: 9/M 07.0421(333)
    In: Geological Society special publication
    Beschreibung / Inhaltsverzeichnis: Natural stone is considered to be a versatile, durable and aesthetically pleasing building material. From the beginning of civilization, important structures and monuments have been built from, or based on, natural stone. Until the end of the nineteenth century, the use of local stone resources was mostly in balance with the local environment. Strict environmental legislation has resulted in the closing of many long-standing quarries in industrialized countries, which has led to a shortage of traditional stone varieties. This has caused problems for restoration practice. Cheap, imported stone from less industrialized countries has become more widely available in recent years.Some of the issues related to built stone conservation and restoration covered by this volume are: the establishment of inventories of possible replacement stones; understanding the decay mechanism and use of preventive conservation methods for slowing down decay processes; evaluation of the properties of natural stone; and assessing the risks of using replacement stones of different qualities.
    Materialart: Monographie ausleihbar
    Seiten: vi, 237 S.
    ISBN: 9781862392915
    Serie: Geological Society Special Publication 333
    Standort: Lesesaal
    Zweigbibliothek: GFZ Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    Unbekannt
    London : The Geological Society
    Beschreibung / Inhaltsverzeichnis: Natural stone is considered to be a versatile, durable and aesthetically pleasing building material. From the beginning of civilization, important structures and monuments have been built from, or based on, natural stone. Until the end of the nineteenth century, the use of local stone resources was mostly in balance with the local environment. Strict environmental legislation has resulted in the closing of many long-standing quarries in industrialized countries, which has led to a shortage of traditional stone varieties. This has caused problems for restoration practice. Cheap, imported stone from less industrialized countries has become more widely available in recent years. Some of the issues related to built stone conservation and restoration covered by this volume are: the establishment of inventories of possible replacement stones; understanding the decay mechanism and use of preventive conservation methods for slowing down decay processes; evaluation of the properties of natural stone; and assessing the risks of using replacement stones of different qualities.
    Seiten: Online-Ressource (VII, 237 Seiten)
    ISBN: 9781862392915
    Sprache: Englisch
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 3
    Unbekannt
    London : The Geological Society
    Beschreibung / Inhaltsverzeichnis: Stone buildings and monuments from the cultural centres of many of the world's urban areas. Frequently these areas are prone to high levels of atmospheric pollution that promote a variety of aggressive stone decay processes. Because of this, stone decay is now widely recognized as a severe threat to much of our cultural heritage. If this threat is to be successfully addressed it is essential that the symptoms of decay are clearly identified, that appropriate stone properties are accurately characterized and that decay processes are precisely identified. It is undoubtedly the case that successful conservation has to be underpinned by a comprehensive understanding of the causes of decay and the factors that control them. The accomplishment of these demanding goals requires an interdisciplinary approach based on co-operation between geologists, environmental scientists, chemists, material scientists, civil engineers, restorers and architects. In pursuit of this collaboration, this volume aims to strengthen the knowledge base dealing with the causes, consequences, prevention and solution of stone decay problems.
    Seiten: Online-Ressource (VII, 330 Seiten)
    ISBN: 9781862392182
    Sprache: Englisch
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
    Publikationsdatum: 2011-02-01
    Beschreibung: Bryozoan and Lithothamnion limestones (BLL) from central-southern Italy, commercially known as Perlato Royal Coreno, were used for a long time in the monumental architecture of the Campania and Lazio regions.In this paper, new mineralogical-petrographical and engineering-geological data about BLL are reported and the relations between the lithofacial and technical features of this stone are investigated.A field survey of the main limestone outcrops allowed a lithostrati-graphic reconstruction of this formation to be drawn and the eight main lithotypes presently used as dimension stones to be recognized.Mineralogical and petrographical characterization was performed by means of X-ray powder diffraction and optical microscopy observation of thin sections (under transmitted, UV-reflected light and cold cathodoluminescence). Petrophysical characterization enabled to compare some engineering-geological properties and to evaluate the influences of rock fabric, chemical composition, fractures and stylolithes on the technical features of the stone. Ageing tests were also performed.Finally the main weathering phenomena affecting the stone were recognised through a detailed study on the facades of the bell tower of the Santa Chiara monastery in Naples.
    Print ISSN: 2038-1719
    Digitale ISSN: 2038-1727
    Thema: Geologie und Paläontologie
    Standort Signatur Erwartet Verfügbarkeit
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  • 5
    Publikationsdatum: 2021-04-26
    Beschreibung: Feldspar for ceramic/glass industries requires sufficiently low content of harmful colourants (Fe-, Ti-, Mn-bearing mineral phases). Hydrothermally altered albite-rich granites are increasingly used as feldspar raw material nowadays; however, they are often marked by increased content of colourants, which must be removed during the processing of feldspar ore. Parallel to the content of colourants, these phases show enrichment in some critical raw materials (CRMs), specifically of Nb, Ta, and Li. In the current study, the laboratory trials focused on the possibility of reprocessing of waste generated during basic magnetic separation of feldspar ore. Major aim of these trials was to search for a processing scheme that would allow for obtaining of mineralogically homogeneous fractions, part of which could be utilised as a source of CRMs. According to the results, combination of gravity, magnetic and heavy liquid separation is highly effective in obtaining of desirable concentrates. Feldspar ore processing waste thus presents potential source of CRMs; however, semi-industrial and full-scale trial must follow in order to prove the economic and environmental suitability of the suggested processing scheme.
    Digitale ISSN: 2075-163X
    Thema: Geologie und Paläontologie
    Standort Signatur Erwartet Verfügbarkeit
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