The use of contact sponge method to measure water absorption in earthen heritage treated with water repellents

dc.contributor.authorRibeiro, Telma
dc.contributor.authorOliveira, Daniel V.
dc.contributor.authorBracci, Susanna
dc.descriptionPublished online: 29 Apr 2020pt_PT
dc.description.abstractEarthen heritage represents an important legacy regarding construction history and technological development, with a significant cultural value that must be preserved. According to UNESCO, around 10% of the World Heritage is built using earth, and 57% of these heritage structures are in danger. Although the interest regarding earthen heritage has grown in the last few years, there is still a significant lack of knowledge in terms of material characterization, especially from conservation science point-of-view. In particular, tests regarding water absorption are always difficult to perform with a material that changes completely when in contact with water. Indeed, due to the presence of clay particles, a normal capillarity test is almost impossible to perform. Moreover, water is responsible for a significant number of degradation phenomena often found in earthen heritage. As a result, there is an urgent need to develop suitable water repellent treatments and to evaluate their efficiency. For this reason, this study focuses on the contact sponge method to assess water absorption rates for adobe and for rammed earth specimens treated with three different water repellents — siloxane, linseed oil, and beeswax. Two sets of specimens were prepared and tested, showing that this method can represent an effective way to measure initial water absorption in earthen materials, and promising results from the tested water repellent treatments were found.pt_PT
dc.identifier.citationRibeiro, T., Oliveira, D. V. & Bracci, S. (2022). The use of contact sponge method to measure water absorption in earthen heritage treated with water repellents. International Journal of Architectural Heritage, 16(1), 85-96. https// Repositório Institucional UPT.
dc.identifier.issn1558-3058 (Print)
dc.identifier.issn1558-3066 (Electronic)
dc.publisherTaylor & Francispt_PT
dc.rightsrestricted accesspt_PT
dc.subjectContact sponge methodpt_PT
dc.subjectEarthen heritagept_PT
dc.subjectWater absorptionpt_PT
dc.subjectWater repellentspt_PT
dc.titleThe use of contact sponge method to measure water absorption in earthen heritage treated with water repellentspt_PT
dc.typejournal articlept_PT
degois.publication.titleInternational Journal of Architectural Heritagept_PT
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