977 Figure 7 – CPB lab mixes pumpability measurements At the same time, proposed CPB mixes including admixture proved to achieve consistently higher UCS than base mix without admixture (Figure 8). Figure 8 – CPB lab mixes UCS These favorable, although preliminary, results allowed for full-scale testing at the paste fill production plant, where the same positive trend observed in the laboratory tests was expected. 4.2 CPB pumpability and strength development, full-scale test results In full-scale test, the CPB mix required the same pumpability compared to the lab test mix, the chosen stope pouring for CPB sampling was TJ 1021 Nv 1880 OB13. Tailings cake feeding rate for CPB production was a mean of 200 ton/hr. Cement feeding rate for CPB production was set as a percentage of
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