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Mechanical performance of lap joints of flat roof waterproofing membranes subjected to artificial weathering

2011-05Journal article Open access
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dc.contributor.authorGonçalves, M.
dc.contributor.authorLopes, Jorge
dc.contributor.authorBrito, J. de
dc.date.accessioned2020-11-02T13:33:30Z
dc.date.available2020-11-02T13:33:30Z
dc.date.issued2011-05
dc.description.abstractThe flat roof of a building, here understood as the whole of every construction element from the ceiling to the surface exposed to climatic agents, is made of a set of horizontal or quasi-horizontal layers that satisfy its functional demands. The waterproofing layer is fundamental in most flat roofs and, of the various options, single-layer systems made of prefabricated membranes and mechanically fastened are one of the most frequently used in Portugal. This solution is also used to repair roofs’ waterproofing systems without having to remove the existing layers, thus reducing the cost. However, it is well known that the performance of these systems is strongly influenced by the efficiency of the membrane fastenings, which is directly related to the membranes’ nature and the design and execution of the lap joints. Many of the anomalies that occur are related to the deficient execution of the membranes’ lap joints1–3 and the consequent faulty performance when subjected to average environmental agents. Studies undertaken in Portugal on the behavior of lap joints in membranes made or commercialized in this country4,5 have corroborated other studies in this area and shown that certain membranes perform worse than others when used in single-layer systems. Three different solutions were tested: amyloid precursor protein (APP)- and Styrene-Butadiene-Styrene (SBS)-modified bituminous membranes and polyvinyl chloride (PVC) membranes. Of the bituminous membranes, the SBS ones produced and commercialized in Portugal presented, as expected, much more satisfactory mechanical characteristics than the APP ones, thus justifying a more thorough study of their suitability for use in mechanically fastened single-layer systems.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationGONÇALVES, M.; LOPES, Jorge Grandão; BRITO, J. de – Mechanical performance of lap joints of flat roof waterproofing membranes subjected to artificial weathering. Experimental Techniques. ISSN 0732-8818. Vol. 35, N.º 3 (2011), pp. 21-28pt_PT
dc.identifier.doi10.1111/j.1747-1567.2009.00598.xpt_PT
dc.identifier.issn1747-1567
dc.identifier.issn0732-8818
dc.identifier.urihttp://hdl.handle.net/10400.21/12311
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringerpt_PT
dc.subjectLap joints of flatpt_PT
dc.subjectRoof waterproofing membranespt_PT
dc.subjectArtificial weatheringpt_PT
dc.titleMechanical performance of lap joints of flat roof waterproofing membranes subjected to artificial weatheringpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage28pt_PT
oaire.citation.issue3pt_PT
oaire.citation.startPage21pt_PT
oaire.citation.titleExperimental Techniquespt_PT
oaire.citation.volume35pt_PT
person.familyNameLopes
person.givenNameJorge
person.identifier.orcid0000-0002-2141-243X
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication520b1f9f-55a6-494f-814c-132da60748a8
relation.isAuthorOfPublication.latestForDiscovery520b1f9f-55a6-494f-814c-132da60748a8

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