Print Email Facebook Twitter Electrical and mechanical properties of asphalt concrete containing conductive fibers and fillers Title Electrical and mechanical properties of asphalt concrete containing conductive fibers and fillers Author Wang, H. (TU Delft Engineering Structures) Yang, Jun (Southeast University) Liao, Hui (Southeast University) Chen, Xianhua (Southeast University) Department Engineering Structures Date 2016-09-30 Abstract Electrically conductive asphalt concrete has the potential to satisfy multifunctional applications. Designing such asphalt concrete needs to balance the electrical and mechanical performance of asphalt concrete. The objective of this study is to design electrically conductive asphalt concrete without compromising on the mechanical properties of asphalt concrete. In order to achieve this goal, various tests have been conducted to investigate the effects of electrically conductive additives (steel fiber and graphite) on the laboratory-measured electrical and mechanical properties of asphalt concrete. The results from this study indicate that the critical embedded steel fiber length is 9.6 mm to maximize the fiber's potential to bridge across the crack from single fiber tensile test. Both steel fiber and graphite can produce conductive asphalt concrete with sufficiently low resistivity, but steel fiber is much more effective than graphite to improve the conductivity of asphalt concrete. A combination of steel fiber and graphite can precisely control the resistivity of asphalt concrete over a wider range. Besides, asphalt concrete containing an optimized amount of steel fibers has a significant improvement in Marshall Stability, rutting resistance, indirect tensile strength, and low temperature cracking resistance compared to the plain concrete. The addition of graphite could increase the permanent deformation resistance with compromised stability and low temperature performance. Asphalt concrete containing steel fibers and graphite weakens the steel fiber reinforcing and toughening effect, but still has a significant improvement in mechanical performance compared to the plain concrete. Subject Asphalt concreteElectrical conductivityFiberGraphiteMechanical properties To reference this document use: http://resolver.tudelft.nl/uuid:29b7ab5f-40ec-464b-a8f0-e24284a439f0 DOI https://doi.org/10.1016/j.conbuildmat.2016.06.063 Embargo date 2018-10-01 ISSN 0950-0618 Source Construction and Building Materials, 122, 184-190 Part of collection Institutional Repository Document type journal article Rights © 2016 H. Wang, Jun Yang, Hui Liao, Xianhua Chen Files PDF Electrical_and_Mechanical ... ncrete.pdf 1.32 MB Close viewer /islandora/object/uuid:29b7ab5f-40ec-464b-a8f0-e24284a439f0/datastream/OBJ/view