Treatment of hazardous waste engine oil as bitumen modifier for sustainable hot mix asphalt pavement

Abstract

Engine oil is compulsory for vehicle operations and should be replaced with new one in specific periods of time or travel distance. Therefore, lots of waste engine oil (WEO) which are very hazardous to the environment is produced every year. Treatment of this waste is very difficult because of the heavy metals in it. In this paper, the usability of WEO in the hot mix asphalt for colder regions is investigated. Softening point and penetration tests have been conducted to WEO modified bitumen to see the change in rheological properties. In addition, Marshall Stability and indirect tensile strength tests have been performed on hot mix asphalt produced with WEO modified bitumen. WEO increases the penetration value while decreasing softening point of the bitumen. Stability results are all above the specification limit, and only specimens compacted with 3% WEO modified bitumen rate ensures the flow and TSR values. Because of the paper, WEO could be used in hot mix asphalt for colder regions and the damages giving to the environment could be decreased.

Keywords

• hazardous
• waste engine oil
• self-healing
• bitumen
• modification

References

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