6533b7dbfe1ef96bd1271434
RESEARCH PRODUCT
Performance of a sustainable asphalt mix incorporating high RAP content and novel bio-derived binder
Eric W. CochranEmmanuel ChailleuxJean-pascal PlancheR. Christopher WilliamsFrançois OlardAna Jiménez Del Barco CarriónSimon PougetLaurent PorotZahra Sotoodeh-niaDavide Lo PrestiNicholas Mankesubject
050210 logistics & transportationWaste managementAsphalt021105 building & construction0502 economics and business05 social sciencesSustainability0211 other engineering and technologiesEnvironmental scienceSettore ICAR/04 - Strade Ferrovie Ed Aeroporti02 engineering and technologybio-binder RAP rejuvenator sustainable pavementsCivil and Structural Engineeringdescription
The recent drive to find ways to increase sustainability and decrease costs in asphalt paving has led researchers to find innovative ways to incorporate more recycled materials and bio-derived binders into mixes with varying success. A new novel bio-derived binder made from refined pine chemistry stabilised with a polymer can increase the sustainability of asphalt mixes while maintaining pavement performance. Laboratory performance testing was conducted on asphalt mixes containing 50% Reclaimed Asphalt Pavement (RAP) by mix weight and the novel bio-derived binder. Results show that the bio-derived binder outperforms the conventional 50/70 pen grade binder mixes with respect to resistance to thermal cracking and adequately passes all requirements for pavements with 20-year design loadings of less than 30 million ESALs. This research shows that asphalt mixes containing 50% RAP and a bio-derived binder can be designed to pass performance criteria at low, intermediate, and high temperatures without the need of neat bitumen.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-07-25 |