TY - JOUR
T1 - Experimental investigation on biopolymer strengthening of mine tailings
AU - Chen, Rui
AU - Ramey, Dan
AU - Weiland, Erick
AU - Lee, Ilsu
AU - Zhang, Lianyang
N1 - Publisher Copyright:
© 2016 American Society of Civil Engineers.
PY - 2016/12/1
Y1 - 2016/12/1
N2 - The dry surface strength of mine tailings (MT), or mill tailings, is closely related to their dust resistance. To explore biopolymer stabilization of MT to increase their dust resistance, uniaxial and triaxial compression tests are carried out on dry MT specimens treated with biopolymer solutions of different concentrations. The experimental results show that the elastic modulus, unconfined compressive strength (UCS), cohesion, and friction angle of MT all increase after biopolymer treatment, with higher biopolymer concentration leading to a greater increase. This is primarily because biopolymer treatment leads to aggregation of MT particles, creates bonding between biopolymer and MT particles, and forms a cross-linking network binding the detached particles and filling the voids between them, leading to a denser structure. As expected, the elastic modulus also increases with higher confining pressure.
AB - The dry surface strength of mine tailings (MT), or mill tailings, is closely related to their dust resistance. To explore biopolymer stabilization of MT to increase their dust resistance, uniaxial and triaxial compression tests are carried out on dry MT specimens treated with biopolymer solutions of different concentrations. The experimental results show that the elastic modulus, unconfined compressive strength (UCS), cohesion, and friction angle of MT all increase after biopolymer treatment, with higher biopolymer concentration leading to a greater increase. This is primarily because biopolymer treatment leads to aggregation of MT particles, creates bonding between biopolymer and MT particles, and forms a cross-linking network binding the detached particles and filling the voids between them, leading to a denser structure. As expected, the elastic modulus also increases with higher confining pressure.
KW - Biopolymer
KW - Dust control
KW - Mine tailings
KW - Scanning electron microscopy (SEM) imaging
KW - Uniaxial and triaxial compression tests
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U2 - 10.1061/(ASCE)GT.1943-5606.0001568
DO - 10.1061/(ASCE)GT.1943-5606.0001568
M3 - Article
AN - SCOPUS:84997236610
SN - 1090-0241
VL - 142
JO - Journal of Geotechnical and Geoenvironmental Engineering
JF - Journal of Geotechnical and Geoenvironmental Engineering
IS - 12
M1 - 06016017
ER -