IJSRP, Volume 8, Issue 4, April 2018 Edition [ISSN 2250-3153]
Peter Ontieri Manyara, John Mwero, Harrison Mutua
This research work investigated the plastic and hardened mechanical properties of concrete made using crushed glass as part of fine aggregates and blue gum ash dosed in the concrete. The blue gum ash cement was prepared by dosing Ordinary Portland cement (Power plus 42.5N) with blue gum ash at 0%(control), 0.5%, 0.75%, 1.0%, 1.25% and 1.5% by weight of cement and crushed glass used to partially replace river sand at 10% by weight of the fine aggregates for vibrated concrete, design mix of class 25. In order to achieve good workability, the best blue gum ash content was maintained at 1.0% and crushed glass content of 10%. For good compressive strength results of blue gum ash glass concrete, up to 10% crushed glass replacement in fine aggregates with 1.0% blue gum ash proportion in concrete attained the highest strength than the control (glass concrete only) achieving strengths of 27.8N/mm2 and 30.1N/mm2 at 7 days and 28 days respectively.