Crumb rubber, resulting from recycled tyres, is used as an innovative material for rigid pavement application. By replacing fine aggregates in concrete mixes with crumb rubber, several benefits can be achieved, including improved performance, sustainability and potential cost savings while also addressing environmental concerns related to tire waste. This study explores the efficiency of two treatment techniques, water soaking and cement coating on crumb rubber utilized as a replacement for fine aggregate in concrete. Through a series of laboratory tests, including slump test and compressive strength test, the treated crumb rubber samples were evaluated and compared. The results indicate significant differences in the performance of crumb rubber based on the treatment method applied. The conventional concrete mix had a maximum slump of 47 mm. Adding water-soaked crumb rubber increased this to 68 mm for the WS-CR35 mix and 32 mm for the CT-CR35 mix, indicating improved workability. In contrast, the cement-coated rubber reduced slump value by 31.92%, decreasing workability. The compressive strength of conventional concrete was 19.68 N/mm2 at 7 days and 30.06 N/mm2 at 28 days. Water-soaked rubber decreased strength by 22% at 7 days and 20.52% at 28 days, while cement-coated rubber increased it by 13.10% at 7 days and 15.70% at 28 days. These findings suggest that water-soaked rubber improves workability but reduces strength, while cement-coated rubber enhances strength but reduces workability. The choice of treatment method should be based on the specific requirements for workability and strength.