Abstract
Studies have demonstrated that solid-state nuclear magnetic resonance (NMR) spectroscopy allows identification of the incorporation of guest ions in minor components in the phases of Portland cement clinker. A series of Portland clinkers were prepared with a fixed AlO and SO content where the SO/KO ratio is varied by adjusting the quantities of added CaSO and K2SO. The incorporation of small amounts of phosphorus in anhydrous Portland cement has been studied by P MAS NMR for four commercial cements with bulk phosphorus contents in the range 0.08-0.45 wt.% PO which are typical for production Portland clinkers. Guest ions in anhydrous and hydrated cement phases may become more important in future cement-based materials, following the development of new cement blends including new supplementary cementitious materials and the use of alternative fuel sources in the cement kilns.
Original language | English |
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Journal | ZKG International |
Volume | 66 |
Issue | 6 |
Pages (from-to) | 46-52 |
Number of pages | 7 |
ISSN | 0949-0205 |
Publication status | Published - 1 Jan 2013 |