Comparative Analysis of Conventional and Waste Tyre Rubber Modified Bitumen for Flexible Pavement Applications

These instructions give you basic guidelines for preparing your journal quality paper for the Conference Proceedings. Rapid industrialization and large-scale infrastructure development have led to increasing scarcity of construction materials and serious environmental concerns related to waste disposal. This study investigates the feasibility of utilizing waste tyre crumb rubber as a modifier in VG-30 grade bitumen for flexible pavement construction. Crumb rubber obtained from waste tyres was blended with bitumen at 10% by weight, and the modified binder was evaluated through four standard tests: penetration, softening point, ductility, and viscosity, per relevant IS standards. Results indicate that Crumb Rubber Modified Bitumen (CRMB) reduces penetration from 61.8 to 56.3 (0.1 mm), increases softening point from 58.75°C to 62.25°C, decreases ductility from 82 to 61 cm, and substantially increases viscosity from 55.27 to 141.0 seconds. These findings confirm that CRMB offers improved stiffness, better high-temperature resistance, and superior rutting resistance, making it a promising, sustainable, and cost-effective material for road construction in India.