Experimental Evaluation of Untreated and Pretreated Crumb Rubber Used in Concrete

The present research aims at evaluating the mechanical performance of untreated and treated crumb rubber concrete (CRC). study was also conducted to reduce loss in properties CRC. In this study, sand replaced with (CR) 0%, 5%, 10%, 15%, 20% by volume. CR NaOH, lime, common detergent for 24 h. Furthermore, water treatment carried out. All these treatments were done enhance that are affected adding CR. evaluated compressive strength, indirect tensile unit weight, ultrasonic pulse velocity, absorption. Compressive strength assessed after 7 28 days curing. decreased increasing percentage improved Lime found be best all four followed NaOH treatment. Detergent worse methods Despite it contributed loss.