Scholarly record
EXPERIMENTAL EVALUATION OF CUMULATIVE DAMAGE OF PLASTERS EXPOSED TO ENVIRONMENTAL CONDITIONS OF CENTRAL EUROPE
Abstract
Plasters belong to the most common external surface layers of building envelopes in Central Europe, which is supposedly due to their low cost and technological simplicity. Their continuous exposure to external environment can though lead to the cumulation of damage and subsequently to the necessity to repair or replace them after certain time. In this paper, the effects of environmental conditions of the city of Prague on three different plasters on lime-cement basis, commonly used either in contemporary buildings or in building renovation works in the Czech Republic, are analyzed. The samples are left for four years in an outside test facility exposed to rain, snow, wind, sun radiation, and polluted air. Then, their basic physical properties, mechanical properties, and water- and water vapor transport properties are determined and compared with the reference specimens. Experimental results do not show any significant damage, which is caused by the very mild winters over the studied time period, minimizing a possible freeze/thaw deterioration typical for the Central European climate.
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