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The increasing use of paste backfill in underground mining makes it necessary to quantify the effect of tailings properties, such as physical and chemical properties, on the performance properties of cemented paste backfill (CPB). The mechanical performance of CPB placed in underground openings (i.e. mine stopes) is often different from the one predicted in laboratory studies even under similar curing conditions of temperature and humidity. This observation is presumably due to the specific consolidation and drain...