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Assessment of siloxane-based polymeric matrices as water repellent coatings for stone monuments

Domenii publicaţii > Chimie + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: B. Simionescu, M. Olaru

Editorial: E. J. Sci. Theol. , 5(1), p.59-67 , 2009.

Rezumat:

The effectiveness of four polymeric water repellent coatings used for the protection of
two monumental limestones, commonly used as building materials in Spain and
Romania, has been evaluated. The selected coatings include three commercially
available siloxane-based water repellent products and a new hybrid nanocomposite with
silsesquioxane units synthesized via sol-gel technique. The water repellents were applied
onto the limestones, and the coating protective efficiency was determined by measuring
the surface contact angles, water vapour permeability and water absorption by
capillarity. The optical properties of the applied coatings were also investigated and
ranked in consideration with their optical characteristics.

Cuvinte cheie: polymer coating, siloxane-based water repellent, limestone