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Feasibility of eco-friendly binary and ternary blended binders made of fly-ash and oil-refinery spent catalyst in ready-mixed concrete production

2018-09-03Journal article Open access
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dc.contributor.authorCosta, Carla
dc.contributor.authorMarques, José Carlos
dc.date.accessioned2018-09-10T11:40:08Z
dc.date.available2018-09-10T11:40:08Z
dc.date.issued2018-09-03
dc.description.abstractLarge-scale recycling of new industrial wastes or by-products in concrete has become a crucial issue for construction materials sustainability, with impact in the three pillars (environmental, social and economic), while still maintaining satisfactory, or improved, concrete performance. The main goal of the paper is to evaluate the technological feasibility of the partial, or total, replacement of fly-ashes (FA), widely used in ready-mixed concrete production, with spent equilibrium catalyst (ECat) from the oil-refinery industry. Three different concrete mixtures with binary binder blends of FA (33.3% by mass, used as reference) and of ECat (16.7% and 33.3%), as well as a concrete mixture with a ternary binder blend with FA and ECat (16.7%, of each) were tested regarding their mechanical properties and durability. Generically, in comparison with commercial concrete (i) 16.7% ECat binary blended concrete revealed improved mechanical strength and durability; (ii): ternary FA-ECat blended binder concrete presented similar properties; and (iii) 33% ECat binary blended concrete has a lower performance. The engineering performance of all ECat concretes meet both the international standards and the reference durability indicators available in the scientific literature. Thus, ECat can be a constant supply for ready-mixed eco-concretes production, promoting synergetic waste recycling across industries.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationCOSTA, Carla; MARQUES, José Carlos – Feasibility of eco-friendly binary and ternary blended binders made of fly-ash and oil-refinery spent catalyst in ready-mixed concrete production. Sustainability. ISSN 2071-1050. Vol. 10, N.º 9 (2018), pp. 1-19pt_PT
dc.identifier.doidoi.org/10.3390/su10093136pt_PT
dc.identifier.issn2071-1050
dc.identifier.urihttp://hdl.handle.net/10400.21/8837
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.subjectSpent equilibrium catalyst (ECat)pt_PT
dc.subjectFCC catalystpt_PT
dc.subjectFly-ashpt_PT
dc.subjectPozzolanic additionspt_PT
dc.subjectReady-mixed concretept_PT
dc.subjectIndustrial wastes recyclingpt_PT
dc.subjectBlended binderspt_PT
dc.subjectEco-friendly concretept_PT
dc.subjectConstruction materials sustainabilitypt_PT
dc.subjectCircular economypt_PT
dc.titleFeasibility of eco-friendly binary and ternary blended binders made of fly-ash and oil-refinery spent catalyst in ready-mixed concrete productionpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage19pt_PT
oaire.citation.issue9pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleSustainabilitypt_PT
oaire.citation.volume10pt_PT
person.familyNameCosta
person.givenNameCarla
person.identifier.orcid0000-0003-4222-4734
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication6dd2b0ba-82ea-4928-be43-62f14e275ac3
relation.isAuthorOfPublication.latestForDiscovery6dd2b0ba-82ea-4928-be43-62f14e275ac3

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