Self-monitoring Application of Asphalt Concrete Containing Graphite and Carbon Fibers
The self-monitoring application of asphalt concrete containing graphite and carbon fibers using indirect tensile test and wheel rolling test were introduced. The experiment results indicate that this kind of pitch-based composite is effective for strain/stress self-monitoring. In the indirect tensil...
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Published in | Journal of Wuhan University of Technology. Materials science edition Vol. 23; no. 2; pp. 268 - 271 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Heidelberg
Wuhan University of Technology
01.04.2008
Springer Nature B.V School of Civil Engineering and Architecture, Central South University, Changsha 410075, China%Key Laboratory of Silicate Materials Science and Engineering of Ministry of Education, Wuhan University of Technology, Wuhan 430070, China |
Subjects | |
Online Access | Get full text |
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Summary: | The self-monitoring application of asphalt concrete containing graphite and carbon fibers using indirect tensile test and wheel rolling test were introduced. The experiment results indicate that this kind of pitch-based composite is effective for strain/stress self-monitoring. In the indirect tensile test, for a completely conductive asphalt concrete specimen, the piezoresistivity was very weak and slightly positive, which meant the resistivity increase with the increment of tensile strain at all stress/strain amplitudes, with the gage factor as high as 6. The strain self-sensing ability was superior in the case of higher graphite content. However, when the conductive concrete was embedded into common asphalt concrete specimen as a partial structure function, the piezoresistivity was positive at all stress/strain amplitudes and with the gage factor of 13, which was much higher than that of completely conductive specimen. Thus, the strain self-sensing ability was superior when conductive asphalt concrete was taken in as a partial structure function. In the wheel-rolling test, the piezoresistivity was highly positive. At any stress amplitude, the piezoresistivity was strong, with the gage factor as high as 100, which was higher for a stress amplitude of 0.7 MPa than that of 0.5 MPa. |
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Bibliography: | asphalt concrete; graphite; carbon fibers; self-monitoring; piezoresistivity 42-1680/TB carbon fibers piezoresistivity asphalt concrete graphite TU528 self-monitoring ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 1000-2413 1993-0437 |
DOI: | 10.1007/s11595-006-2268-2 |