Effects of Steel Wool Distribution on Properties of Porous Asphalt Concrete

Abstract:

An unravelling porous asphalt concrete was developed by adding steel wool and heating it with induction energy. The purpose of this paper is to examine the effects of the steel wool distribution on the properties of this unravelling porous asphalt concrete. The mixture was mixed for 10 min, 12 min, 15 min or 20 min respectively, and then samples were prepared with a gyratory compactor. The steel wool distribution at different mixing time was compared with CT scanning analysis. The electrical resistance, indirect tensile strength and induction heating speed of samples with different mixing time were also studied. It was found that a better distribution of steel wool in porous asphalt concrete increased its indirect tensile strength, but decreased its electrical conductivity and induction heating speed. 15 min mixing is sufficient to disperse steel wool to a homogenous distribution.

• Periodical: Key Engineering Materials (Volume 599)
• Pages: 150-154
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.599.150
• Online since: February 2014
• Authors: Quan Tao Liu, Shao Peng Wu*
• Keywords: Electrical Resistance, Indirect Tensile Strength, Induction Heating, Porous Asphalt Concrete (PAC), Steel Wool

References

[1] J.H. Swart, Experiences with porous asphalt in the Netherlands. Ministry of Transportation, Public Works and Water Management, Proceedings of the European Conference on Porous Asphalt, Madrid Spain, Avon Books, New York, (1997).

[2] L.T. Mo, Damage development in the adhesive zone and mastic of porous asphalt concrete, PhD thesis, Delft University of Technology, the Netherlands, (2010).

[3] R.S. McDaniel, W. Thornton, Field Evaluation of a Porous Friction Course for Noise Control, TRB 2005 Annual Meeting CD-ROM, Transportation Research Board, National Research Council, Washington DC, (2005).

[4] P.E. Bolzan, J.C. Nicholls, G.A. Huber, Searching for Superior Performing Porous Asphalt Wearing Courses, TRB 2001 Annual Meeting CD-ROM, Transportation Research Board, National Research Council, Washington DC, (2001).

[5] Q. Liu, E. Schlangen, M. van de Ven, A. García, Induction heating of electrically conductive porous asphalt concrete, Constr Build Mater 24(7) (2010) 1207-1213.

DOI: 10.1016/j.conbuildmat.2009.12.019

[6] A. García, E. Schlangen, M. van de Ven, D. van Vliet, Induction heating of mastic containing conductive fibers and fillers, Mater Struct 44 (2011) 499-508.

DOI: 10.1617/s11527-010-9644-2

[7] A. García, E. Schlangen, M. van de Ven, Two ways of closing cracks on asphalt concrete pavements: microcapsules and induction Heating, 8th International Conference on Fracture and Damage Mechanics, Key Eng Mater 417 (2009).

DOI: 10.4028/www.scientific.net/kem.417-418.573

[8] Q. Liu, E. Schlangen, M. van de Ven, A. García , Healing of porous asphalt concrete via Induction Heating, Road Mater Pavement 11 (2010) 527-542.

DOI: 10.1080/14680629.2010.9690345

[9] EN 12697-23 (2004): Bituminous mixtures - Test methods for hot mix asphalt – Part 23: Determination of the indirect tensile strength of bituminous specimens.

DOI: 10.3403/02854710