Reduction of the calcium leaching rate of cement paste by addition of silica nanoparticles

Simple item page
dc.contributor.authorGaitero, J. J.
dc.contributor.authorCampillo, I.
dc.contributor.authorGuerrero, A.
dc.contributor.institutionTecnalia Research & Innovation
dc.date.accessioned2024-07-24T12:11:57Z
dc.date.available2024-07-24T12:11:57Z
dc.date.issued2008-08
dc.description.abstractCalcium leaching is a degradation process that consists in the progressive dissolution of the cement paste as a consequence of the migration of the calcium ions to the aggressive solution. Although it is a well known phenomenon, a way of reducing it has not been found yet. The aim of this work is to prove how the addition of small amounts of silica nanoparticles to the cement paste can induce such reduction. The experimental results obtained have shown that nanosilica increases the strength of the cement paste about a 30% in cured samples and more than a 100% in the asymptotically leached ones. At the level of the structure of the C-S-H gel, silica nanoparticles increase the average length of the silicate chains and reduce their polymerization as calcium dissolves. An important decrease of the degradation in terms of porosity and amount of calcium lost has also been observed.en
dc.description.sponsorshipThis work has been supported by the Department of Industry, Trade and Tourism of the Basque Government under the ETORTEK IE05-151 and SAIOTEK S-PE06LA05 projects, and by the Spanish Ministery of Science and Education under the MONACEM project (Ref MAT2005-0390) and the Consolider-Ingenio 2010 Program “CIC nanoGUNE Consolider” CSD2006-53.
dc.description.statusPeer reviewed
dc.format.extent7
dc.identifier.citationGaitero , J J , Campillo , I & Guerrero , A 2008 , ' Reduction of the calcium leaching rate of cement paste by addition of silica nanoparticles ' , Cement and Concrete Research , vol. 38 , no. 8-9 , pp. 1112-1118 . https://doi.org/10.1016/j.cemconres.2008.03.021
dc.identifier.doi10.1016/j.cemconres.2008.03.021
dc.identifier.issn0008-8846
dc.identifier.urihttps://hdl.handle.net/11556/4236
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=46549085579&partnerID=8YFLogxK
dc.language.isoeng
dc.relation.ispartofCement and Concrete Research
dc.relation.projectIDDepartment of Industry, Trade and Tourism of the Basque Government, IE05-151
dc.relation.projectIDSpanish Ministery of Science and Education, MAT2005-0390-CSD2006-53
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subject.keywordsB: Calcium silicate hydrate (C-S-H)
dc.subject.keywordsC: Calcium leaching
dc.subject.keywordsCharacterization
dc.subject.keywordsD: Nanosilica
dc.subject.keywordsPortlandite
dc.subject.keywordsBuilding and Construction
dc.subject.keywordsGeneral Materials Science
dc.titleReduction of the calcium leaching rate of cement paste by addition of silica nanoparticlesen
dc.typejournal article
Files