Evaluation of the performance of surface treatments for the conservation of historic brick masonry
conference paper
The EC project on the evaluation of surface treatments for the conservation of brick masonry (contract EV5V-CT94-0515) is still running. In this paper the preliminary results, mainly based on the research in the field, are presented. In order to assess the performance of surface treatments more than 60 case-studies concerning treated brick masonry monuments were carried out in three different European countries, Belgium, Italy and The Netherlands and research in laboratory performed. In almost all cases a water-repellent treatment had been applied, which, in a number of cases, followed a consolidant treatment. This paper concentrates on the performance of water-repellents These are used for several preventive reasons in the conservation of monuments. Therefore, a thorough evaluation of their performance can not be only based on the water-repellency of the materials, but should be based on the following: - the effectiveness (water-repellency) of a treatment on both the brick and on the brick-mortar system; - the evaluation of any damage occurring after treatment and the possible relation between treatment and damage; - the effectiveness of a treatment against pollutants and against biological growth.
TNO Identifier
329033
Source title
Proceedings 8th International Congress on Deterioration and Conservation of Stone, Berlin, Germany, 30 September - 4 October 1996
Collation
22 p.
Pages
1695-1716
Files
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