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Earth-based mortars for repair and protection of rammed earth walls. Stabilization with mineral binders and fibers

2018-01-20Journal article Restricted access
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dc.contributor.authorGomes, Maria
dc.contributor.authorFaria, Paulina
dc.contributor.authorDiaz Gonçalves, Teresa
dc.date.accessioned2018-02-19T11:06:51Z
dc.date.available2018-02-19T11:06:51Z
dc.date.issued2018-01-20
dc.description.abstractThe use of earth as a building material offers many advantages in terms of sustainability: it is a natural material, most probably non-toxic and ecological, with low energy intensity, low carbon emissions and recyclable. Earth-based mortars are re-gaining its place as building materials for plastering, rendering and repair of earthen walls, not only in the sustainable context but also in terms of efficiency. However, the scientific knowledge about these mortars is still scarce. In particular, the opinions regarding the effects of adding fibers or mineral binders as stabilizers, to improve the performance of the mortar, are contradictory. The study presented in this article is intended to advance the knowledge about the effects of adding low amounts of hemp fibers, hydrated air lime, hydraulic lime, natural cement and Portland cement on the mechanical (flexural and compressive strength, dynamic modulus of elasticity), physical (shrinkage, thermal conductivity, porosity) and hydric (water absorption under low pressure, capillary water absorption, drying) characteristics of mortars formulated with different earth materials. Results show that the addition of the fibers decreases the thermal conductivity of the mortars, which is remarkably good for the mortars made from clayey soil, and slowers the drying of the mortars. They also show that adding the mineral binders will negatively affect the hydric behaviour of the mortars: the water absorption coefficient increases and the drying become slower as the percentage of binder increases. In addition, the use of these binders has no significant effect on the flexural and compressive strength of the mortar.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationGOMES, Maria Idália; FARIA, Paulina; GONÇALVES, Teresa Diaz – Earth-based mortars for repair and protection of rammed earth walls. Stabilization with mineral binders and fibers. Journal of Cleaner Production. ISSN 0959-6526. Vol. 172 (2018), pp. 2401-2414pt_PT
dc.identifier.doi10.1016/j.jclepro.2017.11.170pt_PT
dc.identifier.issn0959-6526
dc.identifier.urihttp://hdl.handle.net/10400.21/8055
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relation.publisherversionhttps://ac.els-cdn.com/S0959652617328445/1-s2.0-S0959652617328445-main.pdf?_tid=acb508b6-1562-11e8-bf15-00000aab0f6b&acdnat=1519037607_a93d2b8ddf2240415080d85ef283c7dcpt_PT
dc.subjectClayish earthpt_PT
dc.subjectMortarpt_PT
dc.subjectLimept_PT
dc.subjectCementpt_PT
dc.subjectHemp fiberpt_PT
dc.subjectLaboratory characterizationpt_PT
dc.titleEarth-based mortars for repair and protection of rammed earth walls. Stabilization with mineral binders and fiberspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage2414pt_PT
oaire.citation.startPage2401pt_PT
oaire.citation.titleJournal of Cleaner Productionpt_PT
oaire.citation.volume172pt_PT
person.familyNameIdália da Gomes
person.familyNameFaria
person.familyNameDiaz Gonçalves
person.givenNameMaria
person.givenNamePaulina
person.givenNameTeresa
person.identifier833004
person.identifier.ciencia-id0110-9A5F-A165
person.identifier.ciencia-id8710-990F-E845
person.identifier.ciencia-idC113-939C-6FF0
person.identifier.orcid0000-0002-2880-5359
person.identifier.orcid0000-0003-0372-949X
person.identifier.orcid0000-0002-9321-3667
person.identifier.ridF-8265-2014
person.identifier.scopus-author-id55515104200
person.identifier.scopus-author-id14011800300
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication2cc2a8b9-07c9-4d5b-b22b-9fc138f382af
relation.isAuthorOfPublicationef0d4a1a-f29e-4317-a848-161c543e5fe1
relation.isAuthorOfPublicationc0c94431-f6d0-45a9-9e26-f93bfa162589
relation.isAuthorOfPublication.latestForDiscovery2cc2a8b9-07c9-4d5b-b22b-9fc138f382af

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