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Effect on Marshall Stability Values for Various Bitumen/Crumb-Rubber Combinations

Author(s):

Anisha , OITM Hisar; Sumesh Jain, OITM Hisar

Keywords:

Marshall Stability; Crumb Rubber; Bitumen; Flexible Pavements; Flow Values

Abstract

The Marshall Stability values of mixtures and the physical qualities of bitumen can be enhanced with the addition of crumb rubber. In addition to reducing the environmental load of discarded tyres, crumb rubber may be utilised to enhance the characteristics of bitumen, making flexible pavements last longer. Incorporating crumb rubber into VG 30 bitumen considerably lowers the penetration values. It was observed that the penetration value decreased as the concentration of the modifier was raised. The plain bitumen penetration value lowers from 67.4 to 61, 58, and 49 when amended with 5, 10, and 15CR, respectively. Marshall Bitumen mixed with crumb rubber has more stability than untreated bitumen. As the number of modifiers rises, so do the stability values. This is so because an increased amount of modifiers leads to a more stable combination, as seen by the increased stiffness of the binder. When the percentage of crumb rubber was raised from 5 to 15%, performance improved by 10-25%.

Other Details

Paper ID: IJSRDV11I40123
Published in: Volume : 11, Issue : 4
Publication Date: 01/07/2023
Page(s): 86-89

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