Effect of Rejuvenators on Performance of Recycled Hot Mix Asphalt Mixtures

Abstract:

Effects of different viscosity rejuvenators on performance of recycled hot mix asphalt (RHMA) mixture were investigated by testing of water stability, fatigue property and rutting resistance. The results indicate that rejuvenator with low viscosity shows more significant influence on the enhancement of fatigue property at high stress ratio and water stability of RHMA mixture than rejuvenator with high viscosity due to its better diffusion ability into aged bitumen. The water stability and fatigue property of RHMA mixture with 15 wt% low viscosity rejuvenator can be close to virgin hot mix asphalt mixture. Compared with rejuvenators of medium and high viscosity, the rutting resistance of RHMA mixture is reduced more obviously by rejuvenator with low viscosity, but still meets the application requirements of RHMA mixture.

• Periodical: Applied Mechanics and Materials (Volumes 71-78)
• Pages: 1068-1072
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.71-78.1068
• Online since: July 2011
• Authors: Dong Liang Kuang, Zhen Gang Feng, Heng Long Zhang, Jian Ying Yu
• Keywords: Fatigue Property, Recycled Hot Mix Asphalt Mixture, Rejuvenator, Rutting Resistance, Water Stability

References

[1] J.A. Shen, S.N. Amirkhanian, J.A. Miller. Effect of rejuvenating agents on Superpave mixtures containing reclaimed asphalt pavements. The International Journal of Pavement Engineering, 19 (2007): 376-384.

DOI: 10.1061/(asce)0899-1561(2007)19:5(376)

[2] L.L. Ding, X.M. Huang. Diffusion mechanism of asphalt rejuvenation agent and research on diffusion simulation test. Transporation Science & Technology, 5 (2009): 75-78.

[3] J.A. Shen, S.N. Amirkhanian, B.M. Tang. Effect of rejuvenator on performanced-based properties of rejuvenated asphalt binder and mixtures. Construction and Building Materials, 21 (2007): 958-964.

DOI: 10.1016/j.conbuildmat.2006.03.006

[4] R.J. Cao, R.S. Chen, Z.L. Xu. Evaluation on performance of asphalt rejuvenator agent. Journal of Highway and Transporation Research and Development, 24 (2007): 43-45.

[5] J.A. Shen, S.N. Amirkhanian, S.J. Lee. The effects of rejuvenator agents on recycled aged CRM binders. The International Journal of Pavement Engineering, 6 (2005): 273-279.

DOI: 10.1080/10298430500439319

[6] D.L. Kuang, J.Y. YU, Z.W. Cai, et al. Effect of rejuvenator agent with different viscosity grades on aged bitumen. Petroleum Asphalt, 24 (2010): 13-17.

[7] P.C. Cui. Analysis of long-time water stability of thermal regeneration asphalt mixture. Shanxi Architecture, 35 (2009): 177-178.