A parametric study of the factors affecting the application of post-consumer waste glass as an alternative cementing agent in paste backfill.

摘要

Test series 1. The purpose of this test series was to investigate the role of cement content on the relative strength performance of a candidate pastefill consolidated with varying ratios of NPC and ground post-consumer waste glass with a control candidate pastefill consolidated with NPC only.;Test series 2. The purpose of this test series was to investigate if differences in glass type affected the performance of candidate NPC/glass consolidated pastefills. A suite of four different glass blends were tested including plate glass, container glass, automotive windshield glass and a 1:1:1 mix of the former three glasses.;Test series 3. The purpose of this test series was to investigate if changes in glass specific surface area over a range of 3600cm 2/g to 9900cm2/g affected the strength benefaction of candidate NPC/glass consolidated pastefills.;Test series 4. The purpose of test series 4 was to investigate if substitutions of Ca(OH)2 for NPC in NPC/glass consolidated pastefill could be used as a means of increasing strength.;Test series 5. The purpose of test series 5 was to investigate whether the strength deterioration experienced in NPC consolidated pastefills incorporating sulphides could be arrested by the application of NPC/glass cements consolidated pastefills by arresting the sulphide oxidation attack. (Abstract shortened by UMI.)