TY - GEN
T1 - Utilization of mine tailings as road base material
AU - Ahmari, Saeed
AU - Chen, Rui
AU - Zhang, Lianyang
PY - 2012
Y1 - 2012
N2 - In this paper, a preliminary study is performed on utilization of copper mine tailings as road base material through geopolymerization. The mine tailings studied is from a copper mine in Arizona, USA and contains mainly silica, alumina and calcium. Sodium hydroxide (NaOH) solution is used as the alkaline geopolymerization agent. Unconfined compression tests are conducted on compacted mine tailings specimens prepared at different NaOH content and cured for different time at room temperature to measure their unconfined compressive strength (UCS). The results show that when an appropriate amount NaOH is used, the strength of compacted mine tailings can be improved. Based on this preliminary study, it can be concluded that mine tailings are a promising road base material if the geopolymerization technology is utilized.
AB - In this paper, a preliminary study is performed on utilization of copper mine tailings as road base material through geopolymerization. The mine tailings studied is from a copper mine in Arizona, USA and contains mainly silica, alumina and calcium. Sodium hydroxide (NaOH) solution is used as the alkaline geopolymerization agent. Unconfined compression tests are conducted on compacted mine tailings specimens prepared at different NaOH content and cured for different time at room temperature to measure their unconfined compressive strength (UCS). The results show that when an appropriate amount NaOH is used, the strength of compacted mine tailings can be improved. Based on this preliminary study, it can be concluded that mine tailings are a promising road base material if the geopolymerization technology is utilized.
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U2 - 10.1061/9780784412121.374
DO - 10.1061/9780784412121.374
M3 - Conference contribution
AN - SCOPUS:84888348099
SN - 9780784412121
T3 - Geotechnical Special Publication
SP - 3654
EP - 3661
BT - GeoCongress 2012
T2 - GeoCongress 2012: State of the Art and Practice in Geotechnical Engineering
Y2 - 25 March 2012 through 29 March 2012
ER -