Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributor.authorParracha, J.pt_BR
dc.contributor.authorBorsoi, G.pt_BR
dc.contributor.authorVeiga, M. R.pt_BR
dc.contributor.authorFlores-Colen, I.pt_BR
dc.contributor.authorLina Nunespt_BR
dc.contributor.authorGarcia, A.pt_BR
dc.contributor.authorIlharco, L.pt_BR
dc.contributor.authorDionísio, A.pt_BR
dc.contributor.authorFaria, P.pt_BR
dc.description.abstractExternal Thermal Insulation Composite Systems (ETICS) have been extensively used for either new constructions or building facades retrofitting in the last decades. These systems can provide improved thermal performance to the building envelope. However, their long-term durability remains a pervasive concern, with some systems presenting relevant anomalies after few years from their application. The durability assessment of ETICS is defined by the EAD 040083-00-0404 guideline, which stated an accelerated ageing procedure based on the hygrothermal and freeze-thaw behaviour. Nevertheless, further important environmental urban conditions, such as UV radiation and atmospheric pollutants, as well as bio-susceptibility, are not envisaged in the guideline. This paper presents the results of an experimental campaign with the aim of evaluating the durability of the rendering system of several commercially available ETICS exposed to an innovative accelerated ageing procedure, which consists of hygrothermal cycles, UV radiation and air pollutants (SO2) exposure. Physical and chemical-morphological tests were carried out prior and after each ageing cycle in order to evaluate the durability of ETICS. Biological susceptibility to moulds was also assessed. The experimental results showed that both surface hardness and surface gloss decreased after the combined effect of the hygrothermal, UV, and SO2 ageing cycles, whereas an increase of surface roughness was observed. Substantial colour change for all systems after the ageing procedure was observed, confirming aesthetic alteration. Traces of biological growth were detected on the systems after ageing and the contact angle decreased after the hygrothermal cycles, indicating a lower surface hydrophobicity of the systems.pt_BR
dc.relationFCT PTDC/ECI-EGC/30681/2017pt_BR
dc.relationFCT 2020.05180.BDpt_BR
dc.subjectArtificial ageing procedurept_BR
dc.subjectSurface propertiespt_BR
dc.subjectMould susceptibilitypt_BR
dc.subjectSurface wettabilitypt_BR
dc.titleEffects of hygrothermal, UV and SO2 accelerated ageing on the durability of ETICS in urban environmentspt_BR
dc.description.magazineBuilding and Environmentpt_BR
Appears in Collections:DE/NCE - Comunicações a congressos e artigos de revista

Files in This Item:
There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.