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Dimensional stability of waterproofing bituminous sheets used in low slope roofs

2011-08Journal article Restricted access
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dc.contributor.authorLopes, Jorge
dc.contributor.authorCorreia, João R.
dc.contributor.authorMachado, Miguel X. B.
dc.date.accessioned2020-11-02T11:09:35Z
dc.date.available2020-11-02T11:09:35Z
dc.date.issued2011-08
dc.description.abstractLap joints between waterproofing bituminous sheets, applied in either single or multiple layers, are one of the most critical areas of roofs, especially when the waterproofing systems comprise only a single sheet. In fact, the way how lap joints are executed is highly associated with the occurrence of anomalies in such systems. With this regard, the dimensional stability of the sheets is one of their most important characteristics, as it that can strongly influence the performance of the lap joints and the details on roof upstands. In this context, with the aim of contributing to improve the understanding of this characteristic of bituminous sheets, the present paper presents results of an experimental study on the dimensional changes suffered by bituminous sheets when subjected to temperature variations. Different types of traditional and non-traditional sheets, with various types of bituminous mixtures (oxidised bitumen and atactic polypropylene (APP) and styrene–butadiene–styrene (SBS) modified bitumen) and reinforcements (polyester, glass fibre and polyethylene) were tested according to EN 1107-1 standard. For most of the sheets, the isolated reinforcements were also subjected to dimensional stability tests in order to evaluate their influence on the overall performance of the waterproofing layer. The results of these experimental investigations confirm that sheets with polyester reinforcement are much less stable than sheets reinforced with glass fibre. In addition, it was concluded that the influence of the type of polymer–bitumen is negligible when compared to the influence of the type of reinforcement – in general, the dimensional stability of the sheets is worse than that of the corresponding reinforcement. Finally, it is shown that the dimensional stability performance of similar products produced by different manufacturers is similar, both for the isolated reinforcements and for the waterproofing sheets.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationLOPES, Jorge Grandão; CORREIA, João R.; MACHADO, Miguel X. B. – Dimensional stability of waterproofing bituminous sheets used in low slope roofs. Construction and Building Materials. ISSN 0950-0618. Vol. 25, N.º 8 (2011), pp. 3229-3235pt_PT
dc.identifier.doi10.1016/j.conbuildmat.2011.03.009pt_PT
dc.identifier.issn0950-0618
dc.identifier.urihttp://hdl.handle.net/10400.21/12309
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relation.publisherversionhttps://reader.elsevier.com/reader/sd/pii/S0950061811000559?token=C44B4F9B6BDD33CBC7DE162B63329F1E2B99DEEFE62FD00FB41C84B529FBF03D67705433DE13264F031540D8C94930FEpt_PT
dc.subjectFlat roofspt_PT
dc.subjectWaterproofingpt_PT
dc.subjectBitumen sheetpt_PT
dc.subjectReinforcementpt_PT
dc.subjectDimensional stabilitypt_PT
dc.titleDimensional stability of waterproofing bituminous sheets used in low slope roofspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage3235pt_PT
oaire.citation.issue8pt_PT
oaire.citation.startPage3229pt_PT
oaire.citation.titleConstruction and Building Materialspt_PT
oaire.citation.volume25pt_PT
person.familyNameLopes
person.givenNameJorge
person.identifier.orcid0000-0002-2141-243X
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication520b1f9f-55a6-494f-814c-132da60748a8
relation.isAuthorOfPublication.latestForDiscovery520b1f9f-55a6-494f-814c-132da60748a8

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