期刊名称：International Journal of Conservation Science
印刷版ISSN：2067-533X
电子版ISSN：2067-8223
出版年度：2011
卷号：2
期号：4
页码：229-234
出版社：Alexandru Ioan Cuza University of Iasi
摘要：Consolidation treatments on cultural heritage assets have been performed for more than 20 years. However, very few studies on the employed products and methods have been done. The main purpose of the present study was to analyze the changes of physical properties in freshly quarried and in deteriorated stone, after a consolidation treatment with tetraethoxysilane. For this purpose we performed measurements of sorption (absorption of water and adsorption of solid particles on the stone surface), gas adsorption and ultrasonic velocity. The study implies that a consolidation treatment will improve the physical properties of deteriorated stone and have a satisfactory effect, if that treatment is performed in a correct way and the stone is allowed to absorb consolidation liquid until saturation. For badly deteriorated stone two consolidation treatments seem to be sufficient; a third application probably does not improve the physical properties of the stone. It was observed that treatments carried out 10 to 15 years ago still have the intended strengthening effect on the stone. In most cases, if stone remains exposed to water, the consolidating treatment ensures only a 5 to 10 years protecting effect; after that the treatment needs to be repeated. However, the long-term effects and efficacy of periodically repeated consolidation treatments of stone need to be studied further, before such a procedure can be recommended as standard procedure. We also present a suggestion for a preventive consolidation of freshly quarried stone used to replace damaged parts
关键词：consolidation; tetraethoxysilane; sorption; gas adsorption; ultrasonic velocity
