Structural Chemistry of Silicates

Structural Chemistry of Silicates PDF

Author: F. Liebau

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 484

ISBN-13: 3642500765

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As natural minerals, silica and silicates constitute by far the largest part of the earth's crust and mantle. They are equally important as raw materials and as mass produced items. For this reason they have been the subject of scientific research by geoscientists as well as by applied scientists in cement, ceramic, glass, and other industries. Moreover, intensive fun damental research on silicates has been carried out for many years because silicates are, due to their enormous variability, ideally suited for the study of general chemical and crystallographic principles. Several excellent books on mineralogy and cement, ceramics, glass, etc. give brief, usually descriptive synopses of the structure of silicates, but do not contain detailed discussions of their structural chemistry. A number of monographs on special groups of silicates, such as the micas and clay min erals, amphiboles, feldspars, and zeolites have been published which con tain more crystal chemical information. However, no modern text has been published which is devoted to the structural chemistry of silicates as a whole. Within the last 2 decades experimental and theoretical methods have been so much improved to the extent that not only have a large number of silicate structures been accurately determined, but also a better under standing has been obtained of the correlation between the chemical composition of a silicate and its structure. Therefore, the time has been reached when a modern review of the structural chemistry of silicates has become necessary.

Alkoxysilanes and the Consolidation of Stone

Alkoxysilanes and the Consolidation of Stone PDF

Author: George Wheeler

Publisher: Getty Publications

Published: 2005

Total Pages: 215

ISBN-13: 0892368152

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Stone is one of the oldest building materials, and its conservation ranks as one of the most challenging in the field. The use of alkoxysilanes in the conservation of stone can be traced as far back as 1861, when A. W. von Hoffman suggested their use for the deteriorating limestone on the Houses of Parliament in London. Alkoxysilane-based formulations have since become the material of choice for the consolidation of stone outdoors.^l This volume, the first to cover comprehensively alkoxysilanes in stone consolidation, synthesizes the subject's vast and extensive literature, which ranges from production of alkoxysilanes in the nineteenth century to the extensive contributions from sol-gel science in the 1980s and 90s. Included are a historical overview, an annotated bibliography, and discussions of the following topics: the chemistry and physics of alkoxysilanes and their gels; the influence of stone type; commercial and noncommercial formulations; practice; lab and field evaluation of service life; and recent developments. This book is designed for conservators, scientists, and preservation architects in the field of stone conservation and will also serve as an indispensable introduction to the subject for students of art conservation and historic preservation.

The Structural Conservation of Panel Paintings

The Structural Conservation of Panel Paintings PDF

Author: Kathleen Dardes

Publisher: Getty Publications

Published: 1998-10-29

Total Pages: 582

ISBN-13: 0892363843

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This volume presents the proceedings of an international symposium organized by the Getty Conservation Institute and the J. Paul Getty Museum. The first conference of its kind in twenty years, the symposium assembled an international group of conservators of painted panels, and gave them the opportunity to discuss their philosophies and share their work methods. Illustrated in color throughout, this volume presents thirty-one papers grouped into four topic areas: Wood Science and Technology, History of Panel-Manufacturing Techniques, History of the Structural Conservation of Panel Paintings, and Current Approaches to the Structural Conservation of Panel Paintings.

Toxicological Profile for Asbestos (Update)

Toxicological Profile for Asbestos (Update) PDF

Author: G. Douglas Hanley

Publisher: DIANE Publishing

Published: 2011

Total Pages: 441

ISBN-13: 1437930719

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This is a print on demand edition of a hard to find publication. Asbestos is a group of 6 different fibrous minerals that occur naturally in the environment. All forms of asbestos are hazardous, and all can cause cancer. This profile includes: (1) The exam¿n. and interpretation of toxicologic info. and epidemiological eval¿s. on asbestos to ascertain the levels of human exposure for the substance and its health effects; (2) A determination of whether adequate info. on the health effects of asbestos is available or in the process of development to determine levels of exposure that present a significant risk to human health; and (3) Where appropriate, identification of toxicologic testing needed to identify the types or levels of exposure that may present significant risk of adverse health effects in humans. Charts and tables.