Research on the development and regeneration performance of asphalt rejuvenator based on the mixed waste engine oil and waste cooking oil

In order to realize the comprehensive utilization of waste oils and improve performance of aged asphalt, a new type of asphalt rejuvenator was developed using waste engine oil (WEO) and waste cooking oil (WCO) as the basis and the other two additives as auxiliary materials. Then an orthogonal test was designed with four factors and three levels to determine the optimum amount of each component of the new rejuvenator. After the process conditions were proposed, the reasonable ratio of different materials of the rejuvenator was determined by the indoor tests, i.e. softening point, penetration and Brookfield viscosity of recycled asphalt. Afterwards, the regenerative effect was studied and analyzed to verify its feasibility compared with the aged asphalt and virgin asphalt. At the same time, the temperature sensitivity of the asphalt sample was evaluated by the dynamic shear rheometer (DSR) tests. The results showed that the aged asphalt could be rejuvenated by the new regeneration agent. Workability was improved as a result of lower viscosity experienced in the asphalt. The properties of aged asphalt could be significantly improved with the rejuvenator content of 3%–4%. The new asphalt rejuvenator with mixed WEO and WCO had good potential applications in recycled asphalt pavement field, which provided waste oils a wider range of application.

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  • English

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  • Accession Number: 01713755
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 2 2019 3:17PM