The Effect of Different Warm Additives on Performance Properties of HMA

Abstract:

The effect of three types of warm additives, including Sasobit, Aspha-min and Evotherm DAT, on the compaction temperature, rutting resistance, low temperature resistance and moisture resistance of hot asphalt mixture (HMA) were evaluated by laboratory test. The test results show that Sasobit, Aspha-min and Evotherm DAT can reduce the compaction temperature of HMA by 27°C, 20°C and 30°C respectively. These warm additives all can improve obviously the rutting resistance of HMA. However, Evotherm DAT can increase low temperature cracking resistance ability of HMA. Aspha-min has obviously negative effect on the low temperature cracking resistance and moisture resistance of HMA. Therefore, it is necessary to investigate performance properties of HMA when selecting warm additives.

• Periodical: Applied Mechanics and Materials (Volumes 178-181)
• Pages: 1369-1372
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.178-181.1369
• Online since: May 2012
• Authors: Shao Wen Du, Shan Shan Li
• Keywords: Aspha-Min, Evotherm DAT, Performance Properties, Sasobit, Warm Additives

References

[1] Kristjansdottir O, Muench S, et al. Journal of transportation research record, 2007 (2040):91-99.

[2] Prowell B, Hurley G, et al. Journal of transportation research record. 2007 (1998):96-102.

[3] Hurley G C, B D Prowell. Evaluation of Sasobit for use in warm mix asphalt. NCAT Report 05-06, National Center for Asphalt Technology, Auburn, Alabama, 2005, 08.

[4] Hurley G C, Prowell B D. Evaluation of Aspha-min zeolite for use in warm mix asphalt. NCAT Report 05-04, National Center for Asphalt Technology , Auburn, Alabama, 2005.

[5] Zhuohui Tao, Wenyuan Huang, et al. Journal of Road Materials and Pavement Design, Volume 10, Supplement 1, 2009, pages 337-347

[6] JTG F40 2004. Technical specifications for construction of highway asphalt pavements. (In Chinese ).