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Production and characterization of clinker thin fi lms as a new tool for nanoscale studies of hydration mechanisms
Rheinheimer, Vanessa; Veglio, Néstor Raúl; Casanova Hormaechea, Ignasi
Universitat Politècnica de Catalunya. Departament d'Enginyeria de la Construcció; Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear; Universitat Politècnica de Catalunya. GCM - Grup de Caracterització de Materials
Nanometer-sized films of clinker phases have been prepared using electron-beam evaporation methods with the aim to produce suitable samples for nanoscale studies of hydration mechanisms and nanomechanical properties of cementitious materials. After deposition on a silicon substrate, film thicknesses and mineralogical composition were characterized by optical interferometry (OI) and grazing-angle X-ray diffraction (GAXRD), respectively. Chemical composition of samples was determined by X-ray photoelectron spectroscopy (XPS) of samples of a few tens of nanometers in thickness. Results from the GAXRD and XPS analysis show that samples quickly react with the atmosphere and show clear signatures of partial hydration and carbonation. However, quantitative analysis shows that the Ca:Si ratio of the deposited film is the same as in the bulk starting material.
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
Cement composites--Testing
thin films
Ciment pòrtland -- Assaigs de materials
Instituto de Ciencias de la Construcción Eduardo Torroja (ICCET)

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