Hydration kinetics for the alite, belite, and calcium aluminate phase in Portland cements from 27Al and 29Si MAS NMR spectroscopy

Jørgen Skibsted, Ole Mejlhede Jensen, Hans Jørgen Jakobsen

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    29Si magic-angle spinning (MAS) NMR spectroscopy is shown to be a valuable tool for obtaining the quantities of alite and belite in hydrated Portland cements. The hydration (1-180 days) of a white Portland cement with 10 wt.% silica fume added is investigated and the degrees of hydration for alite belite, and silica fume are determined. It is demonstrated that 27Al MAS NMR spectra of hydrated Portland cements can give quantitative information about the formation of ettringite and the conversion of this phase to monosulphate during hydration.
    Original languageEnglish
    Title of host publicationProceedings of the 10th International Congress on The Chemistry of Cement
    Place of PublicationGöteborg
    PublisherInform Trycket AB
    Publication date1997
    Publication statusPublished - 1997
    Event10th International Congress on The Chemistry of Cement - Gothenburg, Sweden
    Duration: 2 Jun 19976 Jun 1997
    Conference number: 10


    Conference10th International Congress on The Chemistry of Cement

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