Akademik Veri Yönetim Sistemi
2019 SME Annual Conference and Expo and CMA 121st National Western Mining Conference, Colorado, Amerika Birleşik Devletleri, 24 - 27 Şubat 2019
Copyright © 2019 by SME.The purpose of this study is improving the strength of the cemented paste backfill. Also the effect of blast furnace slag (BFS) was investigated on short - term mechanical properties of CPB. In this study, CPB samples were prepared by 9% portland cement and also 25%, 50% and 75% of the cement were replaced with BFS. The paste materials prepared according to the value of 180 mm slump were cast into cylinder molds. The uniaxial compressive strength (UCS) and Ultrasonic P-Wave Velocities tests were performed. The maximum values of UCS 0.80, 1.70 and 3.03 MPa respectively at 3, 7 and 14 curing period were obtained from 25 wt% BFS added samples. 25%wt. BFS showed a strength of 1.79 times in the 7 days cure period and 2 times in the 14 day cure period according to the reference cemented samples. On the contrary, substitution of 50 and 75 wt.% BFS were reduced strength of CPB samples. Ultrasonic pulse velocity of cemented paste backfill showed similar trend with UCS. But, substitution of 25, 50 and 75 wt.% BFS were below the values of reference samples. The maximum values of UCS are 25% additive BFS. This situation directly affects the cost of CPB due to reduces the cement ratio.