Lime render layers: An overview of their properties |
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| Institution: | 1. Department of Construction and Technology in Architecture, Universidad Politécnica de Madrid, Avenida Juan de Herrera, 4, 28040 Madrid, Spain;2. Department of Civil Engineering, Katholieke Universiteit of Leuven, Kasteelpark Arenberg, 40, box 2448, 3001 Heverlee, Belgium;1. Delft University of Technology, Faculty of Architecture, Julianalaan 134, 2628 BL Delft, The Netherlands;2. TNO, PO Box 49, 2600 AA Delft, The Netherlands;1. Scientific Laboratory, Federal Office for the Protection of Monuments, Arsenal 15/4, 1030 Vienna, Austria;2. Department of Construction Technology and Management, Budapest University of Technology and Economics, M?egyetem rkp. 3. K.II.17, 1111 Budapest, Hungary;3. Institute of Art and Technology – Conservation Sciences, University of Applied Arts Vienna, Salzgries 14/1, 1010 Vienna, Austria;4. Faculty of Restoration, University of Pardubice, Jira?kova 3, 57001 Litomy?l, Czech Republic;1. Istituto per la Conservazione e la Valorizzazione dei Beni Culturali, CNR, via Cozzi 53, 20125 Milano, Italy;2. Dip. Chimica, Materiali e Ingegneria Chimica “Giulio Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy;1. Beijing Key Laboratory of Plant Resources Research and Development, School of Sciences, Beijing Technology and Business University, 11 Fucheng Road, 100048 Beijing, China;2. School of Chemical and Physical Sciences, Victoria University of Wellington, PO Box 600, Wellington, New Zealand |
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| Abstract: | Lime renders are of great importance not only to enhance the appearance of the buildings, but also to protect and preserve old masonries. They constitute a specialized system, composed of several layers, in which each of them depends on the others and carries out some specific functions in order to assure a suitable performance of the whole. Knowledge of the traditional materials and techniques, as well as the know-how, is one of the key points in the maintenance and conservation of lime renders and, by extension, of our Heritage. However, the promotion of the use of cement and the industrialization process, which in the case of Spain took place about the 1960's, caused lime mortars to fall into disuse. In this article, classical treatises as well as the state-of-the-art researches were analysed to compile the properties of lime render layers, on the whole. The knowledge of these characteristics is essential to maintain and repair the existing renders as well as to formulate new compatible ones, while assuring their durability and appropriate performance. Lime is the selected binder for these recommendations because it was widely used as drawn from the literature. |
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| Keywords: | Renders Lime mortars Restoration Conservation Preservation Renovation Treatise Compatibility |
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