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dc.contributor.authorReig, Lucía
dc.contributor.authorSanz, M.A.
dc.contributor.authorBorrachero, Mª Victoria
dc.contributor.authorMonzó, J.
dc.contributor.authorSoriano, Lourdes
dc.contributor.authorPAYÁ, JORDI
dc.date.accessioned2018-01-09T10:57:26Z
dc.date.available2018-01-09T10:57:26Z
dc.date.issued2017-11
dc.identifier.citationREIG, L., et al. Compressive strength and microstructure of alkali-activated mortars with high ceramic waste content. Ceramics International, 2017, vol. 43, no 16, p. 13622-13634. MLAca_CA
dc.identifier.issn0272-8842
dc.identifier.issn1873-3956
dc.identifier.urihttp://hdl.handle.net/10234/171620
dc.description.abstractThe present work investigated alkali-activated mortars with high ceramic waste contents. Tile ceramic waste (TCW) was used as both a recycled aggregate (TCWA) and a precursor (TCWP) to obtain a binding matrix by the alkali-activation process. Mortars with natural siliceous (quartz) and calcareous (limestone) aggregates, and with other ceramic waste materials (red clay brick RCB and ceramic sanitaryware CSW waste), were also prepared for comparison purposes. Given the lower density and higher water absorption values of the ceramic aggregates, compared to the natural ones, it was necessary to adapt the preparation process of the recycled mortars by presaturating the aggregate with water before mixing with the TCWP alkali-activated paste. Aggregate type considerably determined the mechanical behaviour of the samples cured at 65 °C for 3 days. The mortars prepared with the siliceous aggregate presented poor mechanical properties, even when cured at 65 °C. The behaviour of the limestone aggregate mortars depended heavily on the applied curing temperature and, although they presented the best mechanical properties of all those cured at room temperature, their compressive strength reached a maximum when cured at 65 °C, and then decreased. The mechanical properties of the mortars prepared with TCWA progressively increased with curing time (53 MPa at 65 °C for 28 days). An optimum 50 wt% proportion was observed for the limestone/TCWA mortars (≈43 MPa, 3 days at 65 °C), whereas the mechanical properties of that prepared with siliceous particles (10 MPa) progressively increased with the TCWA content, up to 100 wt% substitution (23 MPa). Limestone particles interacted with the binding matrix, and played an interesting beneficial role at the 20 °C curing temperature, with a slight reduction when cured long term (28 days) at 65 °C. The results demonstrated a potential added value for these ceramic waste materials.ca_CA
dc.format.extent13 p.ca_CA
dc.format.mimetypeapplication/pdfca_CA
dc.language.isoengca_CA
dc.publisherElsevierca_CA
dc.rightsCopyright © Elsevier B.V.ca_CA
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/*
dc.subjectstrength (C)ca_CA
dc.subjectalkali activationca_CA
dc.subjecttile ceramic wasteca_CA
dc.subjectrecycled aggregateca_CA
dc.titleCompressive strength and microstructure of alkali-activated mortars with high ceramic waste contentca_CA
dc.typeinfo:eu-repo/semantics/articleca_CA
dc.identifier.doihttps://doi.org/10.1016/j.ceramint.2017.07.072
dc.relation.projectIDSpanish Ministry of Science and Innovation / GEOCEDEM BIA 2011-26947; Spanish Ministry of Economy and Competitiveness / BIA2015 70107-R; FEDERca_CA
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessca_CA
dc.relation.publisherVersionCeramics International, 2017, vol. 43, no 16ca_CA
dc.date.embargoEndDate2019-11
dc.type.versioninfo:eu-repo/semantics/submittedVersionca_CA


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