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dc.contributor.authorMartín-Sedeño, M. Carmen
dc.contributor.authorCuberos, Antonio J M
dc.contributor.authorGomez-de-la-Torre, Maria de los Angeles 
dc.contributor.authorÁlvarez-Pinazo, Gema
dc.contributor.authorOrdónez, Luis M
dc.contributor.authorGateshki, Milen
dc.contributor.authorGarcía-Aranda, Miguel Ángel 
dc.date.accessioned2014-01-29T12:41:54Z
dc.date.available2014-01-29T12:41:54Z
dc.date.issued2009
dc.identifier.citationCement and Concrete Research 40 (2010) 359–369.es_ES
dc.identifier.issn0008-8846
dc.identifier.otherDOI: 10.1016/j.cemconres.2009.11.003
dc.identifier.urihttp://hdl.handle.net/10630/6972
dc.description.abstractBelite sulfoaluminate (BSA) cements have been proposed as environmentally friendly building materials, as their production may release up to 35% less CO2 into the atmosphere when compared to ordinary Portland cements. Here, we discuss the laboratory production of three aluminum-rich BSA clinkers with nominal mineralogical compositions in the range C2S (50-60%), C4A3$ (20- 30%), CA (10%) and C12A7 (10%). Using thermogravimetry, differential thermal analysis, high temperature microscopy, and X-ray powder diffraction with Rietveld quantitative phase analysis, we found that burning for 15 minutes at 1350ºC was the optimal procedure, in these experimental conditions, for obtaining the highest amount of C4A3$, i.e. a value as close as possible to the nominal composition. Under these experimental conditions, three different BSA clinkers, nominally with 20, 30 and 30 wt% of C4A3$, had 19.6, 27.1 and 27.7 wt%, C4A3$ respectively, as determined by Rietveld analysis. We also studied the complex hydration process of BSA cements prepared by mixing BSA clinkers and gypsum. We present a methodology to establish the phase assemblage evolution of BSA cement pastes with time, including amorphous phases and free water. The methodology is based on Rietveld quantitative phase analysis of synchrotron and laboratory X-ray powder diffraction data coupled with chemical constraints. A parallel calorimetric study is also reported. It is shown that the b-C2S phase is more reactive in aluminum-rich BSA cements than in standard belite cements. On the other hand, C4A3$ reacts faster than the belite phases. The gypsum ratio in the cement is also shown to be an important factor in the phase evolution.es_ES
dc.language.isoenges_ES
dc.publisherElsevieres_ES
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectCementoes_ES
dc.subject.other3CaO·3Al2O3·CaSO4es_ES
dc.subject.otherClinkerizationes_ES
dc.subject.otherBelite sulfoaluminate cementes_ES
dc.subject.otherHydrationes_ES
dc.subject.otherQuantitative mineralogical phase analysises_ES
dc.titleAluminum-rich belite sulfoaluminate cements: clinkering and early age hydrationes_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.centroFacultad de Cienciases_ES


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