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Advances in Materials Science and Engineering
Volume 2017 (2017), Article ID 4101503, 7 pages
https://doi.org/10.1155/2017/4101503
Research Article

Application of Conductive Materials to Asphalt Pavement

Department of Civil Engineering, Kunsan National University, 558 Daehak-ro, Kunsan, Jeonbuk 573-701, Republic of Korea

Correspondence should be addressed to Dae-Wook Park

Received 19 March 2017; Revised 15 May 2017; Accepted 1 June 2017; Published 5 July 2017

Academic Editor: Hainian Wang

Copyright © 2017 Hai Viet Vo and Dae-Wook Park. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Snow-melting pavement technique is an advanced preservation method, which can prevent the forming of snow or ice on the pavement surface by increasing the temperature using an embedded heating system. The main scope of this study is to evaluate the impact of conductive additives on the heating efficiency. The electrical resistivity and thermal conductivity were considered to investigate effects of conductive additives, graphite, and carbon fibers on the snow-melting ability of asphalt mixtures. Also, the distribution of the conductive additives within the asphalt concrete body was investigated by microstructural imaging. An actual test was applied to simulate realistic heating for an asphalt concrete mixture. Thermal testing indicated that graphite and carbon fibers improve the snow-melting ability of asphalt mixes and their combination is more effective than when used alone. As observed in the microstructural image, carbon fibers show a long-range connecting effect among graphite conductive clusters and gather in bundles when added excessively. According to the actual test, adding the conductive additives helps improve snow-melting efficiency by shortening processing time and raising the surface temperature.