Evaluation of performance properties of 50% recycled asphalt mixtures using three types of rejuvenators

Hassan ZiariAsphalt and Bitumen Research Center (ABRC), School of Civil Engineering, Iran University of Science and Technology (IUST), Narmak, Tehran, Iran; Correspondence[email protected]

Ali MoniriSchool of Civil Engineering, Iran University of Science and Technology (IUST), Narmak, Tehran, Iran

http://orcid.org/0000-0002-7416-1312

Parastoo BahriSchool of Civil Engineering, Iran University of Science and Technology (IUST), Narmak, Tehran, Iran

Yasha SaghafiSchool of Civil Engineering, Iran University of Science and Technology (IUST), Narmak, Tehran, Iran

Abstract

In this study Cyclogen, Rapiol and waste cooking oil was used as rejuvenators to improve properties of aged bitumen. The effects of these rejuvenators on asphalt mixtures containing 50% of reclaimed asphalt pavement specimens was evaluated using dynamic creep, resilient modulus, low temperature fracture energy and moisture susceptibility tests and the results was compared to recycled mixtures without rejuvenator and control HMA mixtures. The results showed that the rejuvenators are effective in alleviating the aging effect of RAP bitumen. Waste cooking oil performed better than other studied rejuvenators followed by Cyclogen and Rapiol. However, moisture resistance was impaired when rejuvenators were used.

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Evaluation of performance properties of 50% recycled asphalt mixtures using three types of rejuvenators

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Evaluation of performance properties of 50% recycled asphalt mixtures using three types of rejuvenators

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