DEVELOPMENT AND PERFORMANCE EVALUATION OF CRUMB RUBBER –BIO-OIL MODIFIED HOT MIX ASPHALT FOR SUSTAINABLE HIGHWAY PAVEMENTS

Modupe, A. E. and Atoyebi, O. D. and Basorun, A. O. and Gana, A. J. and Ramonu, John A. L. and Raphael, O. D. (2019) DEVELOPMENT AND PERFORMANCE EVALUATION OF CRUMB RUBBER –BIO-OIL MODIFIED HOT MIX ASPHALT FOR SUSTAINABLE HIGHWAY PAVEMENTS. International Journal of Mechanical Engineering and Technology (IJMET), 10 (2). pp. 273-287. ISSN 0976-6340; 0976-6359

Text IJMET_10_02_029.pdf - Published Version Download (646kB)

Abstract

The asphalt industry has been perpetually challenged by its hazardous emissions and its contribution to the ongoingclimate change andglobal warming crises. Likewise, the environment has been cumbered by the challenge of improper disposal of non-degradable solid wastes especially crumb rubber in form of scrap tyres resulting in serious environmental degradation. This research investigated the effect of modifying bitumen with bio-oil from cassava peels upgraded with a nondegradable polymer i.e. crumb rubber. Performance tests were carried out on the modified bitumen to evaluate its effect on its rheological properties. The percentage of bio-oil by volume used for modification of bitumen was 5%, 10%, 15% and 20%. Marshall Stability and flow tests were also carried out on the bio-asphalt produced. Experimental results of bitumen modification with cassava peel oil at 5%, 10%, 15% and 20% replacements showed an increment in flash point of 244°C, 250°C, 252°C & 259°C fire point of 259°C, 265°C, 269°C & 274°C and softening point values of 55°C, 55.5°C, 56.5°C & 57.5°C respectively of the base bitumen. Due to the high moisture content associated with bio-oils, properties such as ductility and viscosity were adversely affected. Upgrading with crumb rubber caused an improvement in the engineering properties of the base bitumen with penetration grade at 20% modification showed the resultant blend was 40/50 which is suitable for use on airport pavements. The highest Marshall Stability and Flow values were obtained at 20% modification with bio-oil upgraded with polymer with values of 26.5kN and 13.33mm as against 9kN and 10.5mm obtained on the controlsample. Finally, it was observed that the bio-oil could be utilized in the production of cutback bitumen due to the reduction of viscosity

Item Type:	Article
Subjects:	T Technology > TJ Mechanical engineering and machinery
Depositing User:	Mr DIGITAL CONTENT CREATOR LMU
Date Deposited:	09 May 2019 13:00
Last Modified:	09 May 2019 13:00
URI:	https://eprints.lmu.edu.ng/id/eprint/2152

Actions (login required)

View Item