Study of alinite cement hydration by impedance spectroscopy |
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Authors: | Young-Min Kim Jong-Heun Lee |
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Affiliation: | a School of Materials Science and Engineering, Seoul National University, Seoul 151-742, South Korea b Division of Analysis and Measurement, Korea Basic Science Institute, Daejeon 305-333, South Korea |
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Abstract: | Two types of alinite cements, Mg-alinite and Zn-alinite, were synthesized using the reagent grade chemicals. Their hydration behavior was compared with ordinary Portland cement (OPC) using impedance spectroscopy (IS) and 29Si nuclear magnetic resonance (NMR) spectroscopy. The bulk resistance in the IS spectra and the intensity ratio of the hydrous (Q1 and Q2) to anhydrous (Q0) phases in the NMR spectra were estimated as the extent of hydration. The results obtained from both techniques were consistent each other. Mg-alinite had a comparable hydration rate to OPC and Zn-alinite exhibited faster hydration kinetics than Mg-alinite. |
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Keywords: | Alinite Portland cement Hydration Impedance spectroscopy (IS) Nuclear magnetic resonance (NMR) |
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