Use of slag/sugar cane bagasse ash (SCBA) blends in the production of alkali-activated materials

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorCastaldelli, Vinícius N.
dc.creatorAkasaki, Jorge L.
dc.creatorMelges, José L.P.
dc.creatorTashima, Mauro M.
dc.creatorSoriano, Lourdes
dc.creatorBorrachero, María V.
dc.creatorMonzó, José
dc.creatorPayá, Jordi
dc.date2014-05-27T11:30:09Z
dc.date2016-10-25T18:52:36Z
dc.date2014-05-27T11:30:09Z
dc.date2016-10-25T18:52:36Z
dc.date2013-08-14
dc.date.accessioned2017-04-06T02:34:29Z
dc.date.available2017-04-06T02:34:29Z
dc.identifierMaterials, v. 6, n. 8, p. 3108-3127, 2013.
dc.identifier1996-1944
dc.identifierhttp://hdl.handle.net/11449/76266
dc.identifierhttp://acervodigital.unesp.br/handle/11449/76266
dc.identifier10.3390/ma6083108
dc.identifierWOS:000330293100005
dc.identifier2-s2.0-84881305350
dc.identifierhttp://dx.doi.org/10.3390/ma6083108
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/896967
dc.descriptionBlast furnace slag (BFS)/sugar cane bagasse ash (SCBA) blends were assessed for the production of alkali-activated pastes and mortars. SCBA was collected from a lagoon in which wastes from a sugar cane industry were poured. After previous dry and grinding processes, SCBA was chemically characterized: it had a large percentage of organic matter (ca. 25%). Solutions of sodium hydroxide and sodium silicate were used as activating reagents. Different BFS/SCBA mixtures were studied, replacing part of the BFS by SCBA from 0 to 40% by weight. The mechanical strength of mortar was measured, obtaining values about 60 MPa of compressive strength for BFS/SCBA systems after 270 days of curing at 20 °C. Also, microstructural properties were assessed by means of SEM, TGA, XRD, pH, electrical conductivity, FTIR spectroscopy and MIP. Results showed a good stability of matrices developed by means of alkali-activation. It was demonstrated that sugar cane bagasse ash is an interesting source for preparing alkali-activated binders. © 2013 by the authors; licensee MDPI, Basel, Switzerland.
dc.languageeng
dc.relationMaterials
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectAlkali-activation
dc.subjectMicrostructure
dc.subjectSlag replacement
dc.subjectStrength development
dc.subjectSugar cane bagasse ash
dc.subjectWaste valorization
dc.subjectActivating reagents
dc.subjectAlkali activation
dc.subjectAlkali-activated binder
dc.subjectElectrical conductivity
dc.subjectMicro-structural properties
dc.subjectSugar cane bagasse ashes
dc.subjectWaste valorizations
dc.subjectBlast furnaces
dc.subjectCompressive strength
dc.subjectElectric properties
dc.subjectFourier transform infrared spectroscopy
dc.subjectMortar
dc.subjectSilicon compounds
dc.subjectSlags
dc.subjectSugar cane
dc.subjectBinders
dc.titleUse of slag/sugar cane bagasse ash (SCBA) blends in the production of alkali-activated materials
dc.typeOtro


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