Next Article in Journal
The Role of ε-Fe2O3 Nano-Mineral and Domains in Enhancing Magnetic Coercivity: Implications for the Natural Remanent Magnetization
Previous Article in Journal
Fossilization History of Fossil Resin from Jambi Province (Sumatra, Indonesia) Based on Physico-Chemical Studies
Article Menu
Issue 3 (March) cover image

Export Article

Open AccessArticle
Minerals 2018, 8(3), 96; https://doi.org/10.3390/min8030096

Micropore Structure of Cement-Stabilized Gold Mine Tailings

1
Department of Civil Engineering, University of Seoul, Seoul 02504, Korea
2
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
Full-Text   |   PDF [1812 KB, uploaded 2 March 2018]   |  

Abstract

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
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

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

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Minerals EISSN 2075-163X Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top