GROUND WASTE GLASS AS A POZZOLANIC CONSOLIDATION AGENT FOR MINE BACKFILL

The potential use of industrial and municipal waste glass as a partial pozzolanic replacement Sor Normal Portland cement in mine backfill ha s been investigated Considerable quantities of glass are currently dis carded into landfill sites at high cost to municipal and industrial us ers with no foreseeable environmental benefits being gained by such di sposal. This research study was undertaken to assess the viability of using ground waste glass materials as partial binder replacement of Po rtland cement fractions within consolidated mine backfill materials. T he program was implemented to review various factors that could influe nce successful incorporation of glass waste replacement of cement, the se factors being the Sensibility of glass waste procurement, determina tion of process economics and the physical and chemical suitability of ground waste glass materials to generate adequate backfill strength w hen replacing Normal Portland cement fractions. A series of laboratory assessment trials were established to evaluate backfill component cha racteristics and mixture strength properties for both standard Portlan d cement-consolidated and blended Portland cement/ground waste glass-c onsolidated backfill materials. Side-by-side review of the strength be haviour of various component backfill/cement mixtures was designed to permit comparative evaluation of the capabilities of ground waste glas s and Portland cement products as backfill consolidating agents.