Decalcification of activated paper sludge - Fly ash-Portland cement blended pastes in pure water

Simple item page
dc.contributor.authorGoñi, S.
dc.contributor.authorFrías, M.
dc.contributor.authorDe La Villa, R. Vigil
dc.contributor.authorVegas, I.
dc.contributor.institutionGENERAL
dc.date.accessioned2024-07-24T12:15:19Z
dc.date.available2024-07-24T12:15:19Z
dc.date.issued2013-07
dc.description.abstractDecalcification in pure water of ternary Portland cement (TPC) pastes, containing thermally activated paper sludge and fly ash, has been evaluated from the leaching of Ca2+ in pure water at the temperature of 20 C during 90 days. Monitoring of calcium loss showed that the leaching kinetics are controlled by diffusion. The degradation of the material over time is estimated from the calcium effective diffusivity. A similar study of plain ordinary Portland cement (OPC) pastes was carried out for comparison. The results showed lower effective diffusion coefficients of calcium in the case of the TPC pastes. This behaviour is related to its microstructure, which is denser than that of OPC as a result of the pozzolanic activity of both additions.en
dc.description.sponsorshipThis work has been supported by the Minister of Science and Innovation MAT2009-10874-CO3 and Spanish National Research Council (CSIC) (Ref no. 200460E617). The authors gratefully acknowledge to the Holmen Paper Madrid Company and Spanish Cement Institute (IECA) for their help in this project. The authors also thank to Maria Teresa Vázquez Segovia for her help in the experiments carried out.
dc.description.statusPeer reviewed
dc.format.extent6
dc.identifier.citationGoñi , S , Frías , M , De La Villa , R V & Vegas , I 2013 , ' Decalcification of activated paper sludge - Fly ash-Portland cement blended pastes in pure water ' , Cement and Concrete Composites , vol. 40 , pp. 1-6 . https://doi.org/10.1016/j.cemconcomp.2013.04.002
dc.identifier.doi10.1016/j.cemconcomp.2013.04.002
dc.identifier.issn0958-9465
dc.identifier.urihttps://hdl.handle.net/11556/4563
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=84877851554&partnerID=8YFLogxK
dc.language.isoeng
dc.relation.ispartofCement and Concrete Composites
dc.relation.projectIDMinister of Science and Innovation, MAT2009-10874-CO3
dc.relation.projectIDConsejo Superior de Investigaciones Científicas, CSIC, 200460E617
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subject.keywordsLeaching of calcium
dc.subject.keywordsPlain ordinary Portland cement (OPC)
dc.subject.keywordsPore-size distribution
dc.subject.keywordsPure water
dc.subject.keywordsScanning electron microscopy (SEM)
dc.subject.keywordsTernary Portland cement (TPC)
dc.subject.keywordsBuilding and Construction
dc.subject.keywordsGeneral Materials Science
dc.titleDecalcification of activated paper sludge - Fly ash-Portland cement blended pastes in pure wateren
dc.typejournal article
Files