Author(s): LK Kokate and RM Damgir

Abstract: The incorporation of waste tire rubber into asphalt binders has emerged as a promising method to improve the properties and performance of bituminous road mixes. This study examines the effects of varying crumb rubber contents and blending temperatures on the engineering characteristics of VG 30 grade bitumen. Bitumen was modified with 5%, 10%, 15%, 20%, and 25% crumb rubber using the wet process at temperatures of 175 °C, 200 °C, and 225 °C. Comprehensive testing, including penetration, softening point, ductility, viscosity, and Marshall stability, was conducted to assess the performance of the modified binders. Results indicate that increasing crumb rubber content led to a reduction in penetration and an increase in softening point, reflecting a stiffer binder. Additionally, Marshall stability values improved, suggesting enhanced load-bearing capacity of crumb rubber-modified bituminous mixtures. These findings highlight the potential benefits of using crumb rubber in asphalt binders for road construction applications.

DOI: 10.22271/27078388.2024.v5.i2a.24

Pages: 01-06 | Views: 66 | Downloads: 23

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