Mehmet and Erhan (2007) investigated on the strength development and chloride penetration of rubberized concretes. They
pointed out that the unit weight of rubberized concrete decreased with increasing percentage of rubber added. Therewas reduction in unit weight up to 18%. The strength development patterns for plain and rubberized concrete between 3 and 7 days were relatively high, slower rate was noticed between 7 and 28 days, and relatively slower rate was observed between 28 and 90 days.