Evaluation of the performance of surface treatments for the conservation of brick masonry

Información del proyecto

Identificador del acuerdo de subvención: EV5V0515

Proyecto cerrado

Fecha de inicio 1 Julio 1994

Fecha de finalización 30 Noviembre 1996

Financiado con arreglo a

• Specific research and technological development programme (EEC) in the field of the environment, 1990-1994

Coste total

Sin datos

Aportación de la UE

Sin datos

Coordinado por

NETHERLANDS ORGANISATION FOR APPLIED SCIENTIFIC RESEARCH - TNO
Netherlands

CORDIS proporciona enlaces a los documentos públicos y las publicaciones de los proyectos de los programas marco HORIZONTE.

Los enlaces a los documentos y las publicaciones de los proyectos del Séptimo Programa Marco, así como los enlaces a algunos tipos de resultados específicos, como conjuntos de datos y «software», se obtienen dinámicamente de OpenAIRE .

Publicaciones

Other (1)

Evaluation of the performance of surface treatments for the conservation of historic brick masonry

Autores: VAN HEES R P J (EDITORS) (TNO, Delft (NL))
Publicado en: EUR 17979 EN (1998) 207pp., free of charge, 1998, Página(s) 207, ISBN 92-828-2366-0

Resultados aprovechables

Surface treatments for conserving brick masonry

An assessment was made of the performance of surface treatments for the conservation of masonry monuments, and, further, the risks of failure and damage were evaluated and methods for the prediction of the performance were developed. In the three European countries involved in the project over 60 case studies were carried out involving assessment of water repellents previously applied to historic brick monuments. Essential for the assessment of the performance of water repellents in the field and in the laboratory is the water repellent behaviour, checked on the brick/mortar system, and the evaluation of any damage observed, in relation with the presence of the treatment. This approach to the evaluation of the effects of treatments, using materials in combination, thus forming a system, proved to be very important: different behaviour of brick and mortar after treatment could be observed, as well as interactions and mutual influences. The effectiveness (water repellency) of a treatment can last for a long time (more than 30 years). To this conclusion the following should be added: there is no clear relation between the age of the treatment and its effectiveness; the effectiveness of the treatment within one building, even within one wall is quite variable; the mortar joint is, from the point of view of water penetration, the weakest part of the (treated) system. The main reason for poor performance of treatments involves in most cases, the lack of preliminary investigations, meant to outline the state of conservation of a building and to furnish the basis for: deciding on the necessity of a treatment; selecting the most suitable treatment product.