Open Access

ARTICLE

Preparation and Analysis of Carbon Fiber-Silicon Carbide Thermally Conductive Asphalt Concrete

Zhiyong Yang, Enjie Hu, Lei Xi, Zhi Chen^*, Feng Xiong, Chuanhai Zhan

School of Civil Engineering and Environment, Hubei University of Technology, Wuhan, 430068, China

* Corresponding Author: Zhi Chen. Email:

(This article belongs to the Special Issue: Advances in Solid Waste Processing and Recycling Technologies for Civil Engineering Materials)

Fluid Dynamics & Materials Processing 2024, 20(4), 705-723. https://doi.org/10.32604/fdmp.2023.044030

Received 19 July 2023; Accepted 02 November 2023; Issue published 28 March 2024

Abstract

An experimental investigation into the thermal conductivity of CF-SiC two-phase composite asphalt concrete is presented. The main objective of this study was to verify the possibility of using SiC powder instead of mineral powder as the thermal conductive filler to prepare a new type of asphalt concrete and improve the efficiency of electrothermal snow and ice melting systems accordingly. The thermal conductivity of asphalt concrete prepared with different thermally conductive fillers was tested by a transient plane source method, and the related performances were measured. Then the temperature rise rate and surface temperature were studied through field heating tests. Finally, the actual ice melting efficiency of the thermally conductive asphalt concrete was evaluated using an effective electrothermal system. As shown by the experimental results, the composite made of SiC powder and carbon fiber has a high thermal conductivity. When SiC replaces mineral powder, the thermal conductivity of the asphalt mixture increases first and then decreases with the increase of carbon fiber content. In the present study, in particular, the thermal conductivity attained a peak when the carbon fiber content was 0.2% of the aggregate mass.

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