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.

Manke N.D., Williams R.C., Sotoodeh-Nia Z., Cochran E.W., Porot L., Chailleux E., et al. (2021). Performance of a sustainable asphalt mix incorporating high RAP content and novel bio-derived binder. ROAD MATERIALS AND PAVEMENT DESIGN, 22(4), 812-834 [10.1080/14680629.2019.1643769].

Performance of a sustainable asphalt mix incorporating high RAP content and novel bio-derived binder

Lo Presti D.
2021-04-03

Abstract

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.
3-apr-2021
Settore ICAR/04 - Strade, Ferrovie Ed Aeroporti
Manke N.D., Williams R.C., Sotoodeh-Nia Z., Cochran E.W., Porot L., Chailleux E., et al. (2021). Performance of a sustainable asphalt mix incorporating high RAP content and novel bio-derived binder. ROAD MATERIALS AND PAVEMENT DESIGN, 22(4), 812-834 [10.1080/14680629.2019.1643769].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/595119
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