Durability Tests on Painted Facade Rendering by Accelerated Ageing
The paper offers a detailed description of the improved accelerated weathering test for a mild climate zone. Experiments
have been carried out to improve the test methods of facade paint durability investigation by including the impact of air
pollution. A painted rendering with the roughened surface was the principal test material. The test results in the climatic
chamber have been compared with the ones obtained with the unexposed and naturally weathered samples. The
performance assessment is based on the intermittent measurements of water permeability properties of the paint coatings
expressed by 2 h surface water absorption rate of the painted samples during the weathering process. The correlation
between natural weathering and the accelerated ageing has been established.
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