Investigating the Practical Application of an Asphalt Mixture Using Lignin to Replace a Portion of the Asphalt Binder
Publication: International Conference on Road and Airfield Pavement Technology 2023
ABSTRACT
In order to achieve carbon-neutral pavements, this study investigated the practical application of the bio-asphalt mixture using kraft lignin derivatives to replace a portion of the asphalt binder. The lignin used in this study is a by-product of the paper-making process. When the lignin-based asphalt with 35% volume replacement of the binder with lignin is applied, the CO2 emissions from the manufacturing of bio-asphalt mixture may be theoretically reduced by 96.6% compared to that of the conventional asphalt mixture. Currently, the laboratory experiments demonstrated the bio-asphalt mixture using 10% volume replacement of the binder with lignin had properties which were equivalent to conventional asphalts. In particular, replacing 10% volume of the binder with lignin may improve the rutting resistance and the fatigue resistance of the mixture. Furthermore, the field verification of the bio-asphalt mixture was conducted on a road with heavy vehicles, and the mixture showed excellent performance in serviceability.
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Information & Authors
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Published In
International Conference on Road and Airfield Pavement Technology 2023
Pages: 524 - 533
History
Published online: Feb 6, 2024
ASCE Technical Topics:
- [Inorganic compounds]
- Air pollution
- Asphalt pavements
- Binders (material)
- Business management
- Carbon compounds
- Carbon dioxide
- Chemicals
- Chemistry
- Design (by type)
- Emissions
- Engineering fundamentals
- Engineering materials (by type)
- Environmental engineering
- Infrastructure
- Load and resistance factor design
- Load factors
- Materials characterization
- Materials engineering
- Mixtures
- Organic compounds
- Pavements
- Pollution
- Practice and Profession
- Recycling
- Structural design
- Sustainable development
- Transportation engineering
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