The Relationship between Surface Roughness, Capillarity and Mineral Composition in Roofing Slates
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The Relationship between Surface Roughness, Capillarity and Mineral Composition in Roofing SlatesAutor(es)
Data
2020-06-15Cita bibliográfica
Cardenes, V.; García, A.; Rodríguez, E.; Hernández Battez, A.; López-Piñeiro, S.; Ruiz de Argandoña, V.G.; Rubio-Ordoñez, Á. The Relationship between Surface Roughness, Capillarity and Mineral Composition in Roofing Slates. Minerals 2020, 10, 539. https://doi.org/10.3390/min10060539
Resumo
[Abstract] Roofing slates are a category of building stones which have a very distinctive feature:
High fissility, which allows them to be split into tiles that are thin, regular and large. There are
several types of roofing slates, depending on their lithology. The four main lithologies are low-grade
slates, slates stricto sensu, phyllites, and mica-schist. Occasionally, other rocks such as quartzites,
serpentinites, or shales, can also be used as roofing slates. Roofing slates must ensure waterproofing,
a quality that depends on both the rock and the installation. Installation must therefore take into
account parameters such as the pitch, orientation, and overlap of the tiles in order to avoid capillarity,
which could jeopardize waterproofing. These parameters are usually included in installation manuals.
However, despite the fact that roughness is a parameter known to have an important e ect on
capillarity, it has never been thoroughly analyzed. Roughness varies depending on the type of roofing
slate, but installation manuals do not take this factor into account. This study has measured surface
roughness in di erent types of roofing slates using a laser scanner and determined the capillarity
values along and across the grain direction. Furthermore, the role of dissolved salts in capillarity has
likewise been studied.
Palabras chave
Roofing slate
Capillarity
Salts
Roof installation
Surface roughness
Capillarity
Salts
Roof installation
Surface roughness
Descrición
Este artículo pertenece al número especial: "Minerals and Other Phases in Constructional Geomaterials".
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Atribución 4.0 Internacional
ISSN
2075-163X