Study on Volume Performance of Conductive Asphalt Concrete Based on Freeze-Thaw Cycle

Abstract:

Conductive asphalt concrete, a kind of intelligent materials, can serve as asphalt solar collector, asphalt heater and self monitor. And moisture damage is one of the most common performance degradation of asphalt concrete. This paper investigates the volume properties of conductive asphalt concrete based on Freeze-thaw cycles. Marshall specimen was frozen and thawed repeatedly and a cycle consists 16h at -18oC and 8h at 60oC. The change of air void and weight loss ratio were chosen to evaluate the moisture resistance of conductive asphalt concrete. Three types of asphalt mixture (control, CAC 1 and CAC 2) were used to study the effect of initial void and material composition on moisture resistance. The results show that both the framework structures and the material composition have a great effect on antifreeze-thaw property of asphalt concrete, which provides an efficient guidance for application of this technology in pavement.

• Periodical: Applied Mechanics and Materials (Volumes 303-306)
• Pages: 2501-2504
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.303-306.2501
• Online since: February 2013
• Authors: Pan Pan, Chang Jun Sun, Ning Tang, Ming Yu Chen, Shao Peng Wu
• Keywords: Conductive Asphalt Concrete, Freeze-Thaw Cycle, Moisture Resistance, Volume Performance

References

[1] A. Rehab, N. Salahuddin: Nanocomposite materials based on polyurethane intercalated into and montmorillonite clay, Materials science and engineering, Vol. 399(2000), pp.368-376.

DOI: 10.1016/j.msea.2005.04.019

[2] J.Y. Yu, X. Zeng, S.P. Wu: Preparation and properties of montmorillonite modified asphalts, Material Science and Engineering, Vol. 2(2007), pp.233-238.

[3] D. Derwin, P. Booth, P. Zaleski, W. Marsey, W. Flood: SNOWFREE® Heated Pavement System to Eliminate Icy Runways, SAE International, No. 2003-01-2145 (2003).

DOI: 10.4271/2003-01-2145

[4] S.P. Wu, X.M. Liu, Q.S. Ye, N. Li: Self-monitoring electrically conductive asphalt-based composite containing carbon fillers, Transactions of Nonferrous Metals Society of China, Vol. 16(2006), pp.512-516.

DOI: 10.1016/s1003-6326(06)60246-x

[5] S.P. Wu, M.Y. Chen, J.Z. Zhang: Laboratory Investigation into Thermal Response of Asphalt Pavements as Solar Collector by Application of Small-scale Slabs, Applied Thermal Engineering, Vol. 31(2011), pp.1582-1587.

DOI: 10.1016/j.applthermaleng.2011.01.028

[6] Parker, F. A field study of stripping potential of asphalt concrete mixtures. Final Report, Alabama Highway Department Project No. ST 2019-6 (1989).