Abstract
Conductive asphalt concrete can satisfy different and multifunctional applications such as heating roads to get rid of snow and ice and assure auto-detection, auto-cure, and energy recovery. This research aims to evaluate the performance of asphalt concrete with additives like steel fibers and graphite powder. This work is based on destructive tests (direct tensile test FENIX) and non-destructive tests (electrical resistivity measures). The obtained results indicate that the tensile resistance, dissipated energy, and ductility module of asphalt concrete increased with the increasing steel fiber percentage. Direct tensile strength, cracking resistance, and dissipated energy increased as graphite percentage increased, while the ductility module decreased. Electrical resistivity decreased when it added steel fibers and graphite. Therefore, it found that tensile strength increased reversibly with electrical resistance. When adding steel fibers or graphite powder, the dissipated energy of asphalt concrete is increased while electrical resistivity is decreased. The dissipated energy of conductive asphalt concrete with steel fibers is higher than that with graphite powder. Electrical resistivity decreased significantly with increasing steel fibers, compared to electrical resistivity with graphite. The obtained results indicate that asphalt concrete cracking resistance is higher with the optimal percentage of steel fibers added at 1% and better mechanical performance. Doi: 10.28991/CEJ-2022-08-02-012 Full Text: PDF
Highlights
Asphalt concrete is a composite material that consists essentially of asphalt as a binder along with aggregates
Direct tensile strength, dissipated energy and ductility module are obtained from Fénix tensile test at the temperature of 24o C
These results indicate that asphalt concrete's direct tensile force, dissipated energy, and ductility module are increased with the increase of steel fiber percentages because the fiber tensile stress itself is higher
Summary
Asphalt concrete is a composite material that consists essentially of asphalt as a binder along with aggregates. It is generally used as a road building material thanks to its good adhesion between the binder and aggregates [1, 2]. Due to asphalt concrete's intensive usage for non-rigid roads and rolling motion comfort, this material has become essential for research studies [3, 4]. Conducting asphalt concrete gives us a design methodology for asphalt concrete that guarantees good electrical and mechanical properties [5]. Asphalt concrete performance has been evaluated using mechanical and electrical tests such as the FENIX direct tensile test and the electrical resistivity test
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
