A spectroscopic NMR investigation of the calcium silicate hydrates present in cement and concrete

NMR spectroscopy is applied to study microstructure of calcium silicate hydrates present in cement and concrete. It is shown that 29Si NMR gives information on the siliceous skeleton of the hydrates. 1H NMR, using CRAMPS techniques, allows to discriminate between protons linked to silicon atoms or t...

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Veröffentlicht in:	Magnetic resonance imaging 1996, Vol.14 (7), p.827-831
Hauptverfasser:	Zanni, Hélène, Rassem-Bertolo, Racha, Masse, Sylvie, Fernandez, Lorenzo, Nieto, Pedro, Bresson, Bruno
Format:	Artikel
Sprache:	eng
Schlagworte:	Analytical chemistry Biological and medical sciences Calcium Compounds Cement Chemical Sciences Civil Engineering Construction Materials Earth sciences Earth, ocean, space Engineering Sciences Exact sciences and technology Hydrogeology Hydrology. Hydrogeology Inorganic polymerization Investigative techniques, diagnostic techniques (general aspects) Magnetic Resonance Spectroscopy Material chemistry Medical sciences NMR spectroscopy Otorhinolaryngology. Stomatology. Orbit Radiodiagnosis. Nmr imagery. Nmr spectrometry Silicates
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Beschreibung
Zusammenfassung:	NMR spectroscopy is applied to study microstructure of calcium silicate hydrates present in cement and concrete. It is shown that 29Si NMR gives information on the siliceous skeleton of the hydrates. 1H NMR, using CRAMPS techniques, allows to discriminate between protons linked to silicon atoms or to calcium atoms. A first investigation of reference compounds indicates that 43Ca NMR will be powerful to determine calcium atom sites in the structure.
ISSN:	0730-725X 1873-5894
DOI:	10.1016/S0730-725X(96)00211-1