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dc.contributor.authorLondono-Zuluaga, Diana
dc.contributor.authorTobón, Jorge Iván
dc.contributor.authorGarcía-Aranda, Miguel Ángel 
dc.contributor.authorSantacruz-Cruz, María Isabel 
dc.contributor.authorGómez-de-la-Torre, María de los Ángeles 
dc.date.accessioned2016-06-29T11:27:00Z
dc.date.available2016-06-29T11:27:00Z
dc.date.created2016
dc.date.issued2016-06-29
dc.identifier.urihttp://hdl.handle.net/10630/11711
dc.descriptionPóster en congreso científicoes_ES
dc.description.abstractYe’elimite based cements have been studied since 70’s years in China, due to the irrelevant characteristics from a hydraulic and environmental point of view. One of them is the reduced fuel consumption, related to the lower temperature reaction required for this kind of cement production as compared to Ordinary Portland Cement (OPC), another characteristic is the reduced requirement of carbonates as a typical raw material, compared to OPC, with the consequent reduction in CO2 releases (~22%)from combustion. Thus, Belite-Ye’elimite-Ferrite (BYF) cements have been developed as potential OPC substitutes. BYF cements contain belite as main phase (>50 wt%) and ye´elimite as the second content phase (~30 wt%). However, an important technological problem is associated to them, related to the low mechanical strengths developed at intermediate hydration ages (3, 7 and 28 days). One of the proposed solutions to this problem is the activation of BYF clinkers by preparing clinkers with high percentage of coexisting alite and ye'elimite. These clinkers are known Belite-Alite-Ye’elimite (BAY) cements. Their manufacture would produce ~15% less CO2 than OPC. Alite is the main component of OPC and is responsible for early mechanical strengths. The reaction of alite and ye´elimite with water will develop cements with high mechanical strengths at early ages, while belite will contribute to later curing times. Moreover, the high alkalinity of BAY cement pastes/mortars/concretes may facilitate the use of supplementary cementitious materials with pozzolanic activity which also contributes to decrease the CO2 footprint of these ecocements. The main objective of this work was the design and optimization of all the parameters evolved in the preparation of a BAY eco-cement that develop higher mechanical strengths than BYF cements. These parameters include the selection of the raw materials (lime, gypsum, kaolin and sand), milling, clinkering conditions (temperature, and holding time), and clinker characterization The addition of fly ash has also been studied. All BAY clinker and pastes (at different hydration ages) were mineralogically characterized through laboratory X-ray powder diffraction (LXRPD) in combination with the Rietveld methodology to obtain the full phase assemblage including Amorphous and Crystalline non-quantified, ACn, contents. The pastes were also characterized through rheological measurements, thermal analyses (TA), scanning electronic microscopy (SEM) and nuclear magnetic resonance (NMR). The compressive strengths were also measured at different hydration times and compared to BYF.es_ES
dc.description.sponsorshipUniversidad de Málaga. Campus de Excelencia Internacional Andalucía Tech. MINECO (BIA2014-57658-C2-1-R and BIA2014-57658-C2-2-R, the latter co-funded by FEDER)es_ES
dc.language.isospaes_ES
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.subjectCemento Portlandes_ES
dc.subjectCemento -- Industriaes_ES
dc.subject.otherBelite-Alite-Ye’elimite (BAY) cementes_ES
dc.titleSynthesis and behavior of Belite-Alite-Ye’elimite (BAY) cementes_ES
dc.typeinfo:eu-repo/semantics/conferenceObjectes_ES
dc.centroFacultad de Cienciases_ES
dc.relation.eventtitleQIES16 (17ª REUNION CIENTÍFICA PLENARIA DE QUÍMICA INORGÁNICA. 11ª REUNIÓN CIENTÍFICA PLENARIA DE QUÍMICA DEL ESTADO SÓLIDO)es_ES
dc.relation.eventplaceTorremolinos, Málagaes_ES
dc.relation.eventdate19/06/2016-22/06/2016es_ES
dc.rights.ccby-nc-nd


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