Performance evaluation of equipment used for volumetric water content measurements


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Maqsoud, Abdelkabir, Gervais, Philippe, Bussière, Bruno et Le Borgne, Vincent (2017). Performance evaluation of equipment used for volumetric water content measurements. WSEAS Transactions on Environment and Development , 13 . pp. 27-32. Repéré dans Depositum à

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Various methods can be used to evaluate in situ volumetric water content; however, when continuous measurements are required, only dielectric methods can be used. For equipment based on these methods, in the mining environment and particularly in environments having high sulfide contents (or acid-generating minerals), the accuracy of measurements can be affected by the chemistry of the solid and liquid phases. To evaluate the real impact of water chemistry and mineralization on volumetric water content measurement, three instruments were tested on five materials with varying sulphur contents and two types of water mineralization.

The results of these investigations show that: i) increasing sulfur content of mine tailings increases the response output of the tested probes; ii) the obtained volumetric water contents are systematically higher than the real volumetric water contents obtained gravimetrically; iii), time-domain reflectometry probes are able to provide measurements in materials with high sulphur contents; and iv) 5TM and GS3 probes are not suitable for use in reactive materials with higher sulphur contents.

Type de document: Article
Mots-clés libres: volumetric water content; sulphur content; dielectric method
Divisions: Génie
Mines et eaux souterraines
Date de dépôt: 20 avr. 2020 19:44
Dernière modification: 28 mai 2020 18:04

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