Non-destructive desalination of natural stones and other porous building materials with poultices.
WTA Guideline 3-13-01/E. Englische Fassung. Version August 2005. Referat 3 Naturstein.
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Beschreibung
The present WTA Recommendation describes the different poultices procedures that can be used for the reduction of the salt content in stones, masonry and porous mineral materials. The optimal boundary conditions were developed for both drying and permanently wet poultices based on the results obtained through recent research and the experience gained from many applications from actual case studies.
The methodology for selection of the most appropriate procedure for a given building is described as well as that for evaluating (quantitatively) the effectiveness of the procedure. Both the advantages as the disadvantages of the procedures and materials to be used are discussed with the aim of achieving a successful desalination. Also discussed are the evaluation criteria to be applied. lt is stressed that desalination procedures are to be carried out only by qualified technicians and that the existing WTA Recommendation on the restoration of natural stone should be taken into account.
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Bauerhaltung Instandsetzung WTA-Merkblatt Mauerwerk Natursteinmauerwerk Salzbelastung Entsalzung Zerstörungsfreiheit Kompresse Wirkungsmechanismus Verfahrenstechnik Untergrundvorbereitung Applikation Dauer Technik