Gaitero, J. J.De Ibarra, Y. SáezErkizia, E.Campillo, I.2024-07-242024-07-242006-05Gaitero , J J , De Ibarra , Y S , Erkizia , E & Campillo , I 2006 , ' Silica nanoparticle addition to control the calcium-leaching in cement-based materials ' , Physica Status Solidi (A) Applications and Materials Science , vol. 203 , no. 6 , pp. 1313-1318 . https://doi.org/10.1002/pssa.2005661681862-6300https://hdl.handle.net/11556/3164The calcium leaching of the cement hydrated matrix is of vital importance for constructions like water containers, dams, bridges, etc which have to be in contact with water during their lifetime. The aim of this work is the study of the reduction of such a negative phenomenon by the addition of silica nanoparticles. Several characterisation techniques such as 29Si MAS NMR, X-ray diffraction, mercury intrusion porosimetry and EDX-microanalysis have been used to evaluate the effect of the nanoparticles in the cement matrix nanostructure and in their impact on the evolution of the Ca leaching throughout time. Subsequent analysis of the results indicates that silica nanoparticles can reduce the Ca-leaching both decreasing the amount of portlandite in the matrix and controlling the degradation rate of the C-S-H gel.6enginfo:eu-repo/semantics/restrictedAccessjournal article10.1002/pssa.200566168Electronic, Optical and Magnetic MaterialsCondensed Matter PhysicsSurfaces and InterfacesSurfaces, Coatings and FilmsMaterials ChemistryElectrical and Electronic Engineeringhttp://www.scopus.com/inward/record.url?scp=33646799811&partnerID=8YFLogxK