Comparison between Neat Bitumen [VG 30] and Modified Bitumen with Varying Compaction Effort and Varying Percentages of Bitumen
Keywords:
CRMB-55, VG-30, Marshal Method of mix design, Stability, Flow, Modified bitumen, Neat bitumenAbstract
Bituminous binders are predominantly used in surfacing the vast network of roads in India. In recent years, traffic loads and tyre pressures have increased, which has created the situation in which modified binders with enhanced performance are needed. However, current specifications and guidelines for the selection and use of Viscosity Grade (VG-30) and modified binders such as Crumb Rubber Modified Bitumen (CRMB-55) are adequate.
An attempt has been made in this thesis to compare the performance of crumb rubber modified bitumen (CRMB-55) with Viscosity Grade (VG-30) for bituminous concrete grade 1 by varying compaction effort and varying percentage of bitumen. Marshall Method of mix design is used to find the Marshall properties like bulk density, stability, air voids, and voids in mineral aggregate, flow value, and voids filled with bitumen.
