TY - GEN
T1 - Mechanical properties of shotcrete with calcium carbonate admixture
AU - Tiryaki, S.
AU - Tunçdemir, H.
AU - Güçlü, E.
AU - Bayram, O.
PY - 2013
Y1 - 2013
N2 - Underground mining facilities have been started after exceeding the optimum open pit limit in a Turkish gold mine. Main haulage roadways are entirely excavated in non-valuable rock formation to reach a particular level which is an access to the ore body. Production galleries connected to the main haulage roadways, are excavated for extracting ore body. Shotcrete is used for reinforcing and supporting these production galleries. Production galleries have been filled just after the excavation is finished and the excavation of upper level production galleries are initiated. As shown in the working cycle, the life time of these galleries are not so long. Cement is a very expensive component of shotcrete. Cost optimization can be possible with conserving the safety factor of shotcrete by using admixtures instead of cement. The subject of this study is the mechanical analysis of the shotcrete by using calcium carbonate admixture which is cheaper relatively, instead of cement to optimize the cost of the shotcrete expense. Calcium carbonate admixture with 18%, 21%, 25%, and 30% is used instead of cement rate in total prescription. When results are analyzed, the current study indicates that shotcrete by using admixture of calcium carbonate may be used without risking the safety factor in the circumferences of production galleries.
AB - Underground mining facilities have been started after exceeding the optimum open pit limit in a Turkish gold mine. Main haulage roadways are entirely excavated in non-valuable rock formation to reach a particular level which is an access to the ore body. Production galleries connected to the main haulage roadways, are excavated for extracting ore body. Shotcrete is used for reinforcing and supporting these production galleries. Production galleries have been filled just after the excavation is finished and the excavation of upper level production galleries are initiated. As shown in the working cycle, the life time of these galleries are not so long. Cement is a very expensive component of shotcrete. Cost optimization can be possible with conserving the safety factor of shotcrete by using admixtures instead of cement. The subject of this study is the mechanical analysis of the shotcrete by using calcium carbonate admixture which is cheaper relatively, instead of cement to optimize the cost of the shotcrete expense. Calcium carbonate admixture with 18%, 21%, 25%, and 30% is used instead of cement rate in total prescription. When results are analyzed, the current study indicates that shotcrete by using admixture of calcium carbonate may be used without risking the safety factor in the circumferences of production galleries.
KW - Calcium carbonate
KW - Production galleries
KW - Shotcrete
KW - Underground gold mine
UR - http://www.scopus.com/inward/record.url?scp=84901925275&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84901925275
SN - 9781632662989
T3 - 23rd International Mining Congress and Exhibition of Turkey, IMCET 2013
SP - 771
EP - 779
BT - 23rd International Mining Congress and Exhibition of Turkey, IMCET 2013
PB - Chamber of Mining Engineers of Turkey
T2 - 23rd International Mining Congress and Exhibition of Turkey, IMCET 2013
Y2 - 16 April 2013 through 19 April 2013
ER -