Authors : G.L. Oyekan and O.A. Oyelade
Abstract: This study investigates the possible use of crushed waste glass as a partial replacement of cement in normal concrete with sugar added as an admixture. The variable in this research is crushed waste glass while the sugar content is held constant at 0.05% by weight of cement in the concrete mix. The crushed waste glass content was varied from 5-25% in steps of 5% by volume of cement. Tests were carried out on 140 concrete cube specimens of size 150x150x150 mm. The specimens were prepared using a concrete mix proportion of 1:2:4 (cement:fine aggregate:granite), water/cement ratio of 0.65. It was observed that the 28th day compressive strength of the concrete cubes for 5% replacement of cement with CWG was 27.11 N mm-2 which is 12% above that for the concrete cube control specimen (without replacement of cement with CWG and without sugar). For cube specimen where sugar is added as an admixture (without CWG), the 28th day compressive strength of the cube is 28.15 N mm-2. It was also observed that the compressive strength of the specimens decreased as the percentage of crushed waste glass in the mix increased. Concrete cube made with 20% CWG content is suitable for low-cost housing development.
G.L. Oyekan and O.A. Oyelade, 2011. Crushed Waste Glass as a Partial Replacement of Cement in Normal Concrete Production with Sugar Added as an Admixture. Journal of Engineering and Applied Sciences, 6: 369-372.