INFLUENCE OF FLY ASH ON MECHANICAL PROPERTIES OF RUBBERIZED CONCRETE (M20 GRADE)

Concrete was a wide range of building materials, as concrete was intended as a constructin material. Researchers have tried to improve its quality and enhance its performance. The present investigation is aimed to study the effect of partial replacement of cement with fly ash in rubberized concrete. The percentage of rubber used in this study was 5 percentages   replaced with coarse aggregate and fly ash varies from 0-20 percentage were replaced with cement in conventional concrete. Size of rubber strips used is about 10 mm. the mix design was targeted for M20 grade of concrete.  The mix proportion of concrete was 1:1.5:3 with water cement ratio of 0.45. The fresh, hardened   properties of rubber concrete are produced at two different exchange ratios of flight pegs compared to conventional concrete that does not have rubber or flight ash. Test results show that the strength, which replaces 5% with rubber content compared to traditional concrete, slightly reduced strength. However, increasing the increase in flight ash from 10% to 20% improved the mechanical properties of rubber concrete. This study examines the effect of rubber particles on some properties of concrete.