Electrical, Thermal and Induction Heating Properties of Dense Asphalt Concrete

Abstract:

Induction heating consists in adding electrically conductive fibers to the asphalt mixture and heating them with an induction heating device. But still, the factors that affect the increase of temperature are not well-known. With this purpose, 25 different mixtures, with the same aggregates distribution and amount of bitumen, but with 2 different lengths, 4 different quantities, and 4 different diameters of steel wool fibers have been considered. The influence of fibers on the air void content, electrical and thermal conductivity and on the induction heating of dense asphalt concrete has been studied. It was found that steel wool fibers increase slightly the electrical and thermal conductivities of dense asphalt concrete. Finally, it has been observed that the temperature reached due to the induction heating, increases with the number of fibers in the mixture and with their diameter.

• Periodical: Advanced Materials Research (Volume 723)
• Pages: 303-311
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.723.303
• Online since: August 2013
• Authors: Alvaro Garcia, Jose Norambuena-Contreras, Manfred N. Partl
• Keywords: Asphalt Concrete, Electrical Resistivity, Induction Heating (IH), Thermal Conductivity (TC)

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