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A platform for research: civil engineering, architecture and urbanism
Piezoresistive performance of self-sensing cement-based composites filled with multi-layer graphene
Development of self-sensing cementitious composites is promising for structural health monitoring. This study aims at the piezoresistive performance of Multi-layer Graphene filled cement-based composites (GCBC). Experiments were conducted to evaluate the sensitivity, repeatability, linearity and hysteresis of GCBC working as a sensor under different loading systems. Percolation characteristic of GCBC, with one order of magnitude decrease in resistivity in line with the MLGs content increased from 2 vol.% to 6 vol.%, was obtained. The piezoresistive ability of GCBC containing 5 vol.% MLGs showed high sensitivity and fidelity under both cyclic and monotonic loading, with the stress sensitivity of 1.89%/MPa and gauge factor of 266.4. Meanwhile, the resistivity response of GCBC demonstrated four distinct behaviours under the monotonic loading. The piezoresistive model for GCBC dominated by tunnelling effect was proposed and compared with the experimental results. The comparative result showed good agreement between predictions with the experimental curves.
Piezoresistive performance of self-sensing cement-based composites filled with multi-layer graphene
Development of self-sensing cementitious composites is promising for structural health monitoring. This study aims at the piezoresistive performance of Multi-layer Graphene filled cement-based composites (GCBC). Experiments were conducted to evaluate the sensitivity, repeatability, linearity and hysteresis of GCBC working as a sensor under different loading systems. Percolation characteristic of GCBC, with one order of magnitude decrease in resistivity in line with the MLGs content increased from 2 vol.% to 6 vol.%, was obtained. The piezoresistive ability of GCBC containing 5 vol.% MLGs showed high sensitivity and fidelity under both cyclic and monotonic loading, with the stress sensitivity of 1.89%/MPa and gauge factor of 266.4. Meanwhile, the resistivity response of GCBC demonstrated four distinct behaviours under the monotonic loading. The piezoresistive model for GCBC dominated by tunnelling effect was proposed and compared with the experimental results. The comparative result showed good agreement between predictions with the experimental curves.
Piezoresistive performance of self-sensing cement-based composites filled with multi-layer graphene
Wu, Tao (author) / Sun, Lixin (author) / Liu, Xi (author) / Liu, Yang (author) / Yu, Xiaohu (author)
Journal of Sustainable Cement-Based Materials ; 13 ; 815-828
2024-06-02
14 pages
Article (Journal)
Electronic Resource
English
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