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Numerical optimization of self-compacting mortar mixture containing spent equilibrium catalyst from oil refinery

dc.contributor.authorNunes, Sandra
dc.contributor.authorCosta, Carla
dc.date.accessioned2017-11-27T12:11:30Z
dc.date.available2017-11-27T12:11:30Z
dc.date.issued2017-08
dc.description.abstractAs the oil refining industries continue to grow, the production of waste catalysts generated in that process is expected to also increase. It would be of great value both economically and ecologically if these wastes could be reused as an addition in self-compacting concrete (SCC). This paper uses statistical factorial design approach, namely a central composite design, to conduct a proper experimental plan to design SCC mortar mixtures incorporating spent equilibrium catalyst (ECat), a waste generated by the oil refinery industry. The mathematical empirical models derived (which were also experimentally validated) revealed the influence of mixture design parameters, and their coupled effects, on the mortars' properties namely, deformability, viscosity, compressive strength, resistivity and ultrasonic pulse velocity. A numerical optimization technique was applied to the derived models to select the best mixture, which maximizes simultaneously durability and eco-efficiency and minimize cost, while maintaining self-compactability. The current study revealed that ECat can be successfully applied in SCC mortars, as a high volume cement replacement material (up to V-Ecat/Vp = 19.7%) due to its high pozzolanic activity. Nevertheless, for powder-type SCC5, cement/ECat blends must be combined with other finer additions to complete the powders distribution curve increasing the viscosity and stability of paste phase, in the fresh state.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationNUNES, Sandra; COSTA, Carla - Numerical optimization of self-compacting mortar mixture containing spent equilibrium catalyst from oil refinery. Journal of Cleaner Production. ISSN 0959-6526. Vol. 158, (2017), pp.109-121pt_PT
dc.identifier.doi10.1016/j.jclepro.2017.04.161pt_PT
dc.identifier.issn0959-6526
dc.identifier.issn1879-1786
dc.identifier.urihttp://hdl.handle.net/10400.21/7589
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationPOCI-01-0145-FEDER-007457pt_PT
dc.relationECO-Zement: Reuse of fluid catalytic cracking waste from oil refineries in cement-based materials
dc.relation.publisherversionhttps://ac.els-cdn.com/S0959652617309009/1-s2.0-S0959652617309009-main.pdf?_tid=f111fb5e-cebd-11e7-82e6-00000aacb35f&acdnat=1511270265_9559c7c505f8f27c6f0ebb0a44ce841dpt_PT
dc.subjectSpent equilibrium catalyst (ECat)pt_PT
dc.subjectPozzolanic additionpt_PT
dc.subjectIndustrial by-productpt_PT
dc.subjectStatistical factorial designpt_PT
dc.subjectSelf-compacting concrete (SCC)pt_PT
dc.titleNumerical optimization of self-compacting mortar mixture containing spent equilibrium catalyst from oil refinerypt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleECO-Zement: Reuse of fluid catalytic cracking waste from oil refineries in cement-based materials
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FECM%2F113115%2F2009/PT
oaire.citation.endPage121pt_PT
oaire.citation.startPage109pt_PT
oaire.citation.titleJournal of Cleaner Productionpt_PT
oaire.citation.volume158pt_PT
oaire.fundingStream3599-PPCDT
person.familyNameCosta
person.givenNameCarla
person.identifier.orcid0000-0003-4222-4734
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication6dd2b0ba-82ea-4928-be43-62f14e275ac3
relation.isAuthorOfPublication.latestForDiscovery6dd2b0ba-82ea-4928-be43-62f14e275ac3
relation.isProjectOfPublicationc0232b48-5e98-47b5-8580-772a0db2c566
relation.isProjectOfPublication.latestForDiscoveryc0232b48-5e98-47b5-8580-772a0db2c566

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