The Experimental Research on Durability of Sasobit Modified Asphalt

Abstract:

Sasobit has been applied into asphalt successfully since 1997. From then on, a lot of studies emphasizes on how Sasobit can lower asphalt’s viscosity and reduce poison odor emission. However, the durability of asphalt containing Sasobit is ignored to research. This paper aimed to analyze Sasobit impact on the durability of asphalt. In this study, the Sasobit modified asphalt was blended using different Sasobit contents of 2%, 3%, 4% and 5% by weight of asphalt into the base asphalt (SBS modified asphalt). The Rolling Thin Film Oven test (RTFO) and Pressure Aging Vessel test (PAV) were conducted to simulate the mixing and construction aging and in-service aging of asphalt. The properties and micro-structure of the base asphalt and Sasobit modified asphalt in three different aging states (original state, mixing and construction aging state and in-service aging state) were tested by using the Penetration-Grade system, Performance-Grade system and fluorescence microscope. The aging indexes of the base asphalt and Sasobit modified asphalt were calculated to compare their durability. It was evident that the durability of the Sasobit modified asphalt was mostly affected by the type of base asphalt and Sasobit had a little impaction on the durability of the asphalt.

• Periodical: Advanced Materials Research (Volumes 233-235)
• Pages: 1774-1781
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.233-235.1774
• Online since: May 2011
• Authors: Jie Ji, Xiao Hui Luo, Da Li Liu
• Keywords: Aging Index, Durability, Microstructure, Property Analysis, Sasobit Modified Asphalt

References

[1] Advisory note 17. Warm Mix Asphalt – a-state-of-the-art review. Australian Asphalt Pavement Association (AAPA). http://www.aapa.asn.au/docs/no17.pdf

[2] Jenkins, K.J., J.L.A. de Groot, M.F.C. van de Ven & A.A.A. Molenaar. Half-warm foamed bitumen treatment, a new process. 7th Conference on asphalt pavements for Southern Africa (CAPSA), Victoria Falls, 1999.

[3] Kanitpong, K., Sonthong, S., Nam, K., Martono, W., and Bahia, H. Laboratory Study on Warm Mix Additives. Paper No. 07-1364. Presented at the 86th Annual Meeting of the Transportation Research Board, Washington, DC,2007.

[4] Gandhi, T. Effects of warm asphalt additives on asphalt binder and mixture properties. Ph.D Dissertation of Clemson University, 2008.

[5] Arif Chowdhury and Joe W. Button. A Review of Warm Mix Asphalt. U.S. Department of Transportation Technical Report,Texas Transportation Institute, College Station, Texas, 2008.

[6] Hurley G C, Prowell B D. Evaluation of Sasobit for Use in Warm Mix Asphalt. NCAT Report 05-06, National Center for Asphalt Technology, Auburn University, Auburn, Alabama, 2006.

[7] Butz, T., Rahimian, I., and Hildebrand, G. Modifications of Road Bitumins with the Fischer-Tropsch Paraffin Sasobit®, Journal of Applied Asphalt Binder Technology ,Vol.1(2001), p.70.

[8] Webpage of Sasol Wax. http://www.sasolwax.com/Applications.html.

[9] D'Angelo, J. et al. Warm‐Mix Asphalt: European Practice. Report No. FHWA‐PL‐08‐007 http://international.fhwa.dot.gov/pubs/pl08007/pl08007.pdf ,2008.

[10] Stacey D. Diefenderfer, Kevin K. McGhee, and Bridget M. Donaldson Installation of Warm Mix Asphalt Projects in Virginia Virginia Department of Transportation Technical Report, Virginia Transportation Research Council, Charlottesville, VA,2007.

[11] Corrigan M. Warm Mix Asphalt Technology. Presented at Technical Meeting, AASHTO Standing Committee on Highways, Nashville, Tennessee, 2005.

[12] Xu shifa,Yan Bin, Ji Jie. The Current Technology and Application Trend for Warm Mixture Asphalt. Journal of Highway, Vol.7(2005), p.195.

[13] Huang Wenyuan, Qin yongchun. The Current Application for Warm Mixture Asphalt. Journal of Shanghai Journal of Highway,Vol.3(2008), p.1.

[14] Ran Jin. The Evaluation Research on Materials and Performance of Warm Mixture Asphalt. Master Dissertation of Beijing University of Civil Engineering and Architecture, Beijing, 2008.

[15] JTG F40-2004, Specification for Construction Highway Asphalt Pavements. Beijing: Renmin Communication Press, 2004.

[16] JTG 052-2000, Standard Test Method of Bitumen and Bituminous Mixture for Highway Engineering. Beijing: Renmin Communication Press,2000.

[17] Li Zhongqiu,Ma Jinkun. The Experiment Analysis on Sasobit Impacted on Asphalt. Journal of Highway and Transportation Research and Development, Vol,10(2004), p.141.

[18] Ji Jie, Ran jin. Analysis on Performances of Sasobit Asphalt Mixture. Journal of traffic and transportation engineering, Vol,9(2009), p.6.