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Minerals 2018, 8(3), 96;

Micropore Structure of Cement-Stabilized Gold Mine Tailings

Department of Civil Engineering, University of Seoul, Seoul 02504, Korea
Department of Civil and Environmental Engineering, Western University, London, ON N6A 5B9, Canada
Author to whom correspondence should be addressed.
Received: 28 December 2017 / Revised: 14 February 2018 / Accepted: 22 February 2018 / Published: 2 March 2018
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Mine tailings have often to be stabilized by mixing them with cementing agents. In this study, the pore structure of gold tailings stabilized with Portland cement was evaluated by means of mercury intrusion porosimetry. The investigation was conducted on samples prepared with different fractions of tailings and cement as well as on samples activated with elevated temperature curing and chemical (CaCl2) addition. It was observed that all mixed samples exhibit a mono-modal pore size distribution, indicating that the cement-stabilized tailings are characterized by a single-porosity structure. The results also showed that the higher fraction of tailings and cement leads to a dense and finer pore structure. The total porosity of mixture samples decreases with increasing curing temperature and CaCl2 concentration due to the acceleration of hydration reaction. View Full-Text
Keywords: tailings; cement; microstructure; mercury intrusion porosimetry; activation tailings; cement; microstructure; mercury intrusion porosimetry; activation

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Lee, J.K.; Shang, J.Q. Micropore Structure of Cement-Stabilized Gold Mine Tailings. Minerals 2018, 8, 96.

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