A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Development of Multifunctional Coatings for Protecting Stones and Lime Mortars of the Architectural Heritage
Unique multifunctional coatings, comprising a 3D superhydrophobic agent and two nanostructured photocatalysts (solar-light sensitive 50/50 and 10/90 TiO2-ZnO nano-heterostructures), compatible with the inorganic substrates of the Built Heritage, have been designed.
The synthesized nanoparticles showed an enhanced photocatalytic activity (tested by NO degradation) as compared with the raw TiO2 and ZnO materials.
Dispersing agents were used to optimize the coatings, avoiding agglomeration of the photocatalytic nanoparticles and increasing the stability of the suspensions. Four distinct dispersions were optimized and applied as coatings onto stony materials used in the Built Heritage, such as sandstone, lime mortar, granite and limestone. Their effectiveness was assessed by assessing hydrophobicity of the surfaces (static water contact angle), photocatalytic activity and self-cleaning as well as water vapour permeability of the treated specimens. These transparent coatings demonstrated high compatibility with the construction materials of the Architectural Heritage and showed a synergistic effect rendering a minimized water absorption, self-cleaning ability evidenced by the reduced adsorption of soiling deposits and a reasonable degradation of any trace that might be adsorbed, as well as a protecting hydrophobic environment for the photocatalyst.
Development of Multifunctional Coatings for Protecting Stones and Lime Mortars of the Architectural Heritage
Unique multifunctional coatings, comprising a 3D superhydrophobic agent and two nanostructured photocatalysts (solar-light sensitive 50/50 and 10/90 TiO2-ZnO nano-heterostructures), compatible with the inorganic substrates of the Built Heritage, have been designed.
The synthesized nanoparticles showed an enhanced photocatalytic activity (tested by NO degradation) as compared with the raw TiO2 and ZnO materials.
Dispersing agents were used to optimize the coatings, avoiding agglomeration of the photocatalytic nanoparticles and increasing the stability of the suspensions. Four distinct dispersions were optimized and applied as coatings onto stony materials used in the Built Heritage, such as sandstone, lime mortar, granite and limestone. Their effectiveness was assessed by assessing hydrophobicity of the surfaces (static water contact angle), photocatalytic activity and self-cleaning as well as water vapour permeability of the treated specimens. These transparent coatings demonstrated high compatibility with the construction materials of the Architectural Heritage and showed a synergistic effect rendering a minimized water absorption, self-cleaning ability evidenced by the reduced adsorption of soiling deposits and a reasonable degradation of any trace that might be adsorbed, as well as a protecting hydrophobic environment for the photocatalyst.
Development of Multifunctional Coatings for Protecting Stones and Lime Mortars of the Architectural Heritage
Speziale, A. (author) / González-Sánchez, J. F. (author) / Taşcı, B. (author) / Pastor, A. (author) / Sánchez, L. (author) / Fernández-Acevedo, C. (author) / Oroz-Mateo, T. (author) / Salazar, C. (author) / Navarro-Blasco, I. (author) / Fernández, J. M. (author)
International Journal of Architectural Heritage ; 14 ; 1008-1029
2020-08-08
22 pages
Article (Journal)
Electronic Resource
Unknown
Built Heritage , coating , granite , lime mortar , limestone , photocatalyst , sandstone , self cleaning , waterproofing
| TIBKAT | 1998
Investigation of commercial ready-mixed mortars for architectural heritage
| British Library Conference Proceedings | 2009
Protecting an Architectural Heritage with CAD
British Library Online Contents | 1993
Lime, lime mortars and lime colours
| British Library Conference Proceedings | 1989