AN EXPERIMENTAL STUDY ON PROPERTIES OF RUBBERIZED CONCRETE

Present study aims to explore the potential utilization of waste crumb tires in various concrete mixes for the production of light weight and non-structural concrete to study the structural behavior of concrete, and to help partially solving environmental problem produced from disposing waste tires. As known that the strength of concrete mainly depends on properties of materials mainly coarse and fine aggregate used in mix, and depends on the adhesion between these materials and cement paste, so this thesis aims to investigate many methodologies to improve the bonding force between crumb rubber and cement baste, by making pre- treatment for rubber surface. The necessary laboratory tests will be done on fine aggregate (sand), coarse aggregate and cement, and many methods of pre-treatment were investigated such as Na OH pre- treatment, mortar pre-treatment and pre-treatment with bonding agent to increase the bonding force between crumb rubber and cement baste, several tests were made on fresh and hardened concrete