Effect of Bio-Oils and Wastewater Sludge on the Performance of Binders and Hot Mix Asphalt with High Reclaimed Asphalt Pavement Content-Reference-Cited by-同舟云学术

Effect of Bio-Oils and Wastewater Sludge on the Performance of Binders and Hot Mix Asphalt with High Reclaimed Asphalt Pavement Content

Published:2024-08-29 Issue:17 Volume:17 Page:4276
ISSN:1996-1944
Container-title:Materials
language:en
Short-container-title:Materials

Author:

Melaku Robeam S.¹,Liu Jun²,Gedafa Daba S.²^ORCID

Affiliation:

1. Addis Ababa Institute of Technology, Department of Civil Engineering, Addis Ababa 365, Ethiopia

2. Department of Civil Engineering, University of North Dakota, Grand Forks, ND 58202, USA

Abstract

Waste Cooking Oil (WCO), Soy Oil (SO), and Wastewater Sludge (WWS) have great potential to increase reclaimed asphalt pavement (RAP) content for economic and environmental benefits. This study explored the effects of SO and WCO on rutting, fatigue cracking, and low-temperature cracking performance of binders and Hot Mix Asphalt (HMA) with high RAP content. The potential effect of WWS on the performance and compaction efforts of high RAP content mixes at a 10 °C (50 °F) lower compaction temperature than the control compaction temperature was also investigated. The results indicated that 85% of the RAP binders can be incorporated while maintaining similar performance compared to the control by using 15% SO or 12.5% WCO as a rejuvenator with 2.5% virgin binder. Adding 1% WWS by weight of the total binder improved the binder’s rheological properties, the mix’s cracking performance, and the mix’s density at lower compaction temperatures.

Publisher

MDPI AG

Link

https://www.mdpi.com/1996-1944/17/17/4276/pdf

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