Assessment of manufacturing process efficiency in the dispersion of carbon fibers in smart concrete by measuring AC impedance
| Autor: | Hamza Allam, François Duplan, Sofiane Amziane, Yves Burtschell |
|---|---|
| Přispěvatelé: | Institut Pascal (IP), SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), Institut universitaire des systèmes thermiques industriels (IUSTI), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA)-Institut national polytechnique Clermont Auvergne (INP Clermont Auvergne), Université Clermont Auvergne (UCA)-Université Clermont Auvergne (UCA) |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Building and Construction
[SPI.MAT]Engineering Sciences [physics]/Materials [PHYS.MECA.MEMA]Physics [physics]/Mechanics [physics]/Mechanics of materials [physics.class-ph] [SPI.GCIV]Engineering Sciences [physics]/Civil Engineering carbon fibers fiber dispersion manufacturing process General Materials Science smart concrete [SPI.GCIV.STRUCT]Engineering Sciences [physics]/Civil Engineering/Structures [SPI.GCIV.MAT]Engineering Sciences [physics]/Civil Engineering/Matériaux composites et construction ComputingMilieux_MISCELLANEOUS electrical impedance [SPI.GCIV.EC]Engineering Sciences [physics]/Civil Engineering/Eco-conception |
| Zdroj: | Cement and Concrete Composites Cement and Concrete Composites, 2022, 127, pp.104394. ⟨10.1016/j.cemconcomp.2021.104394⟩ Cement and Concrete Composites, 2022, 127 (12), pp.104394. ⟨10.1016/j.cemconcomp.2021.104394⟩ |
| ISSN: | 0958-9465 |
| DOI: | 10.1016/j.cemconcomp.2021.104394⟩ |
| Popis: | International audience; Smart concrete is a construction material designed to perform structural and self-sensing roles simultaneously. self-sensing behavior stems from the inclusion of conductive fibers within the cementitious matrix, reducing its electrical impedance and enabling piezoresistive behavior. good dispersion of fibers is essential to ensure good mechanical and sensing properties. this study assesses the efficiency of different mixing sequences and energies in dispersing fibers within the mortar. the efficiency is assessed with 0.1% and 0.5% carbon fiber volume, by measuring the ac impedance: those volume fractions correspond to two fiber percolation states: around the percolation threshold (0.1%), and in the saturation zone (0.5%). the study showed that the mixing sequence has a significant effect on the final impedance of the material, and that increasing mixing energy is relatively ineffective in enhancing the fiber dispersion. differences between different mixing sequences were evident with 0.1% carbon fibers, while, to a certain extent, saturating the system with conductive fibers reduced the gaps between different mixing sequences. |
| Databáze: | OpenAIRE |
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