A new approach for evaluating rejuvenator diffusing into aged bitumen

Dongliang Kuang; Zhengang Feng; Jianying Yu; Xing Chen; Bo Zhou

doi:10.1007/s11595-011-0164-x

Journal of Wuhan University of Technology Materials Science Edition ›› 2011, Vol. 26 ›› Issue (1) : 43 -46. DOI: 10.1007/s11595-011-0164-x

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A new approach for evaluating rejuvenator diffusing into aged bitumen

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Abstract

Rejuvenator diffusing into aged bitumen was evaluated by determining penetration and chemical components of aged bitumen with rejuvenator coat before and after diffusing experiment. Effects of temperature, time and viscosity of rejuvenator on the diffusing ability of rejuvenator into aged bitumen were investigated. Results indicated that the diffusing ability of rejuvenator into aged bitumen could be enhanced with the increasing of temperature and time, however, the diffusing of rejuvenator into aged bitumen would be restricted due to the volatilization of light component and aging of rejuvenator under high temperature (over 170 °C). Rejuvenator with low viscosity diffused into aged bitumen more easily.

Keywords

bitumen / aging / rejuvenator / diffusing

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Dongliang Kuang, Zhengang Feng, Jianying Yu, Xing Chen, Bo Zhou. A new approach for evaluating rejuvenator diffusing into aged bitumen. Journal of Wuhan University of Technology Materials Science Edition, 2011, 26(1): 43-46 DOI:10.1007/s11595-011-0164-x

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References

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