Show simple item record

dc.contributor.authorSalvador, Renan
dc.contributor.authorPialarissi Cavalaro, Sergio Henrique
dc.contributor.authorCincotto, Maria Alba
dc.contributor.authorDomingues de Figueiredo, Antonio
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
dc.date.accessioned2016-09-19T12:45:43Z
dc.date.available2018-12-01T01:31:18Z
dc.date.issued2016-11
dc.identifier.citationSalvador, R., Pialarissi Cavalaro, S.H., Cincotto, M., de Figueiredo, A.D. Parameters controlling early age hydration of cement pastes containing accelerators for sprayed concrete. "Cement and concrete research", Novembre 2016, vol. 89, p. 230-248.
dc.identifier.issn0008-8846
dc.identifier.urihttp://hdl.handle.net/2117/90036
dc.description.abstractThe objective of this work is to parametrize the early age hydration behavior of accelerated cement pastes based on the chemical properties of cement and accelerators. Eight cements, three alkali-free and one alkaline accelerators were evaluated. Isothermal calorimetry, in situ XRD and SEM imaging were performed to characterize kinetics and mechanisms of hydration and the microstructure development. The reactivity of all accelerators is directly proportional to their aluminum and sulfate concentrations and to the amount and solubility of the setting regulator contained in cement. Alite hydration is enhanced if a proper C3A/SO3 ratio (between 0.67 and 0.90) remains after accelerator addition and if limestone filler is employed, because undersulfated C3A reactions are avoided. Combinations of compatible materials are recommended to enhance the performance of the matrix and to prevent an undesirable hydration behavior and its consequences in mechanical strength development.
dc.format.extent19 p.
dc.language.isoeng
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
dc.subject.lcshShotcrete
dc.subject.otherCement paste
dc.subject.otherAccelerator
dc.subject.otherHydration
dc.subject.otherKinetics
dc.subject.otherSprayed concrete
dc.titleParameters controlling early age hydration of cement pastes containing accelerators for sprayed concrete
dc.typeArticle
dc.subject.lemacFormigó gunitat
dc.contributor.groupUniversitat Politècnica de Catalunya. EC - Enginyeria de la Construcció
dc.identifier.doi10.1016/j.cemconres.2016.09.002
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S0008884616305026
dc.rights.accessOpen Access
local.identifier.drac18965367
dc.description.versionPostprint (author's final draft)
local.citation.authorSalvador, R.; Pialarissi Cavalaro, S.H.; Cincotto, M.; de Figueiredo, A.D.
local.citation.publicationNameCement and concrete research
local.citation.volume89
local.citation.startingPage230
local.citation.endingPage248


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record

Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain