Abstract (EN):
The Laboratory of Building Physics (LFC) has been developed an
important research about air drying technologies applied to buildings treatment. In
the last years it was validated and experimentally analysed the operating principle
of a technique called ¿Wall Base Ventilation System¿ initially developed for the
treatment of rising damp problems in historical and ancient building walls, consisting
in use the air circulation in the base of the walls of buildings with high
thickness and heterogeneity in its constitution, with a relative humidity far off
saturation. The first experimental and numerical studies established allowed to
value the viability of the proposed system, so it was also developed a designing
methodology. Rising Damp coming from the ground by capillarity, rises through
porous materials, is one of the main degradation causes of historical and ancient
buildings, essentially, of its thick walls with heterogeneous composition where the
traditionally techniques era sometimes ineffective or too expensive and that was
the reason why it was decided to developed a new way to control it. In this work
it is proposed to present two completely different applications of the ¿Wall Base
Ventilation System¿ technique developed in the LFC: the relative humidity control
in crawl spaces where, for a Portuguese building, it is presented the problem, the
prediction of mould growth, moisture balance in the crawl space, some numerical
simulations and the proposed intervention methodology and for the rising damp
in walls where it is presented the problem, an experimental study and the system
implementation and optimization.
Idioma:
Inglês
Tipo (Avaliação Docente):
Científica
Nº de páginas:
25