Plaster finishes in historical buildings – Measurements of surface structure, roughness parameters and air flow characteristics
2013 (English)In: Plaster finishes in historical buildings: Measurements of surface structure, roughness parameters and air flow characteristics / [ed] A. Troi, E. Lucchi, 2013, 69-75 p.Conference paper (Refereed)
Soiling of surfaces in historical buildings by deposition of particles is a common problem. Minimizing soiling is an important goal for conservation of structures and objects. The surfaces give rise to an interference with the air motions along the surfaces. Properties of surfaces may therefore influence the particle deposition. It is well known that with increasing roughness of the surfaces the particle deposition rate increases. The properties of surfaces in historical buildings are not well documented. We have investigated samples of surfaces finished by wood float finish, steel float finish and brushed finish. As a reference we have used an MDF board. The geometrical properties of the surfaces have been documented by using the stripe projection method. The resistance to airflow along the surface and the turbulence generated by the surfaces have been investigated by recording the boundary layer flow over the surfaces in a special flow rig. The work reported is part of a project where the process of soiling is studied both in laboratory and in field studies. The air velocity adjacent to the surfaces will be recorded with both PIV (Particle Image Velocimetry) and hot-wire technique. The temperature gradient close to the walls will be recorded with cold-wire technique.
Place, publisher, year, edition, pages
2013. 69-75 p.
Soiling, Plasters, Particle deposition, Surface structure, Surface roughness
Other Engineering and Technologies
Research subject Engineering Mechanics; Energy Technology
IdentifiersURN: urn:nbn:se:kth:diva-167803ISBN: 978-88-88307-26-8OAI: oai:DiVA.org:kth-167803DiVA: diva2:813457
The 3rd European Workshop on Cultural Heritage Preservation (EWCHP) Bozen/Bolzano, Italy
QC 201505252015-05-222015-05-222015-05-25Bibliographically approved