Effects Of Partial Sullstitution Of Fly Ash And Polymeric Waste To Cement And Coarse Aggregate Of Concrete

Concrete is important for the construction industry yet the materials needed in mixing concrete increases the risk of natural resources depletion. This research study used waste rubber tire in replacement of gravel, extracted from bodies of water. Also, the researcher used fly ash instead of cement, Partial substitutions of 5% and 10% were made. Nine treatments, including the control group, with three replicates each were fabricated. 27 concrete cylinders, 6-inches in diameter and 12-inches in height, were fabricated and tested for workability anel compressive strength. The slump test results showed that fly ash replacement results to slump loss while the increase of waste rubber tire increases the slump result. Based on the data gathered on the compressive strength test, other than the control group, there were three treatments, F5R0, F10R0, and F0R5 which passed the 3000 psi requirement, and was found out to have no significant difference (p < 0.05) between the control. The study showed that minimal replacement of 5%, either in coarse aggregate and cernent, revealed mean compressive strengths greater than 3000 psi which is acceptable in construction. Meanwhile, the costs of the concrete mixes were minimized as the partial substitutions increases. This study was able to find out cheaper and eco-friendly concrete mixes which can be good alternative to be used in the construction industry.