ABSTRACT
The present paper describes the Swedish and the Czech republic part of the EUREKA-project EU 640 Eurocare WetDry-Dep which involves measurement of climatic and pollution factors along with exposures of important building materials. Two field exposures were performed with 14 test sites on the facades on the Royal Palace and 8 test sites on the St Vitus Cathedral and compared with standardized reference sites. On each test site specimens of carbon steel, zinc, copper and limestone were exposed both open and sheltered for one year. Temperature, relative humidity and time of surface wetness were measured together with gaseous pollution of sulphur dioxide and nitrogene dioxide, deposition of particulates and precipitation. The results contribute to the assessment of the role and significance of wet and dry deposition of pollutants on the degradation of materials and are also useful for the choice of methodologies in future test programmes which should aim at generalizations of results and proposals for technical applications.
