HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

Assessment of manufacturing process efficiency in the dispersion of carbon fibers in smart concrete by measuring ac impedance

Abstract : 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.
Complete list of metadata

https://hal.uca.fr/hal-03524393
Contributor : Christophe Tournayre Connect in order to contact the contributor
Submitted on : Thursday, January 13, 2022 - 11:20:07 AM
Last modification on : Thursday, February 10, 2022 - 11:34:04 AM
Long-term archiving on: : Thursday, April 14, 2022 - 6:33:40 PM

Identifiers

Citation

Hamza Allam, François Duplan, Sofiane Amziane, Yves Burtschell. Assessment of manufacturing process efficiency in the dispersion of carbon fibers in smart concrete by measuring ac impedance. Cement and Concrete Composites, Elsevier, 2022, 127 (12), pp.104394. ⟨10.1016/j.cemconcomp.2021.104394⟩. ⟨hal-03524393⟩

Share

Metrics

Record views

18

Files downloads

58