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Kinetics of the hydration reactions in the cement paste with mechanochemically modified cement 29Si magic-angle-spinning NMR study
Luleå tekniska universitet.
Luleå tekniska universitet.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.ORCID iD: 0000-0003-1067-7990
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1999 (English)In: Cement and Concrete Research, ISSN 0008-8846, E-ISSN 1873-3948, Vol. 29, no 10, p. 1575-1581Article in journal (Refereed) Published
Abstract [en]

A comparative 29Si solid state NMR study of kinetics of the hydration reactions in cement pastes based on rapid-hardening ordinary Portland cement (SH) and on the mechanochemically modified cement (MSH) is presented. The mechanical activation of a cement/silica fume blend in a vibrating mill accelerates the hydration reactions by 15-20%, especially during the initial period of hardening. Variations in relative intensities of 29Si resonances assigned to the hydration products in SH/MSH blends suggest different structures of hydrated SH nets. This can be correlated with a pronounced increase of the MSH-cement binding capacity reported earlier.

Place, publisher, year, edition, pages
1999. Vol. 29, no 10, p. 1575-1581
National Category
Infrastructure Engineering Physical Chemistry Metallurgy and Metallic Materials
Research subject
Structural Engineering; Chemistry of Interfaces; Mineral Processing
Identifiers
URN: urn:nbn:se:ltu:diva-2785DOI: 10.1016/S0008-8846(99)00135-0ISI: 000083654000007Local ID: 079d2f50-1d94-11dd-8384-000ea68e967bOAI: oai:DiVA.org:ltu-2785DiVA, id: diva2:975638
Note

Godkänd; 1999; 20080509 (bajo)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Antzutkin, OlegForsling, WillisRao, K. HanumanthaRonin, Vladimir

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