Projects per year
Abstract
Carbon fibre incorporated smart cement-based composite has great potential for the multifunctional health monitoring of concrete structures. This paper presents the microstructural, electrical, and mechanical properties of smart cement-based composites incorporating chopped carbon fibres from low dosages at 0–0.1% by volume (vol%) with detailed intervals, to high dosages up to 2.4 vol%. In comparison to a plain mortar, smart cement-based composites at all fibre contents had higher flexural strength. A 95% improvement in flexural strength was obtained at a fibre content of 0.3 vol%, whereas compressive strength increased up to a fibre content of 1.0 vol%, with the highest improvement, 105%, at 0.2 vol%. The bulk conductivity of smart cement-based composites underwent a double percolation process where the percolation zone of the fibres was identified at fibre contents of 0–0.1 vol% and the percolation zone of the capillary pores resided at fibre contents of 2.1–2.4 vol% indicating an extremely low durability. This study presents the laboratory characterization on smart cement-based composites where the fundamentals of the transitional behaviours of the mechanical properties and the percolation in electrical property through fibre loading were studied, which is a necessary step prior to the assessment of the self-sensing performance. The impact of this study will enable the physical properties of carbon fibre incorporated smart cement-based composites to be optimized through the design and manufacturing process. This will lead to robust performance and superior in-situ multi-functional health monitoring of concrete structures.
Original language | English |
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Article number | 1055796 |
Journal | Frontiers in Materials |
Volume | 9 |
DOIs | |
Publication status | Published - 22 Nov 2022 |
Keywords
- compressive strength
- double percolation
- electrical conductivity
- fibre content
- flexural strength
- impedance spectroscopy
- porosity
- smart cement-based composite
ASJC Scopus subject areas
- Materials Science (miscellaneous)
Fingerprint
Dive into the research topics of 'Effect of fibre loading on the microstructural, electrical, and mechanical properties of carbon fibre incorporated smart cement-based composites'. Together they form a unique fingerprint.Projects
- 1 Finished
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RM4L - Resilient Materials for Life
Paine, K. (PI), Ball, R. (CoI), Gebhard, S. (CoI), Heath, A. (CoI), Tan, L. (Researcher) & Tzoura, E. (Researcher)
Engineering and Physical Sciences Research Council
3/04/17 → 2/10/22
Project: Research council
Datasets
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Dataset for "Effect of fibre loading on the microstructural, electrical, and mechanical properties of carbon fibre incorporated smart cement-based composites"
Zhang, J. (Creator), Heath, A. (Project Member), Ball, R. (Work Package Leader) & Paine, K. (Project Leader), University of Bath, 22 Nov 2022
DOI: 10.15125/BATH-01202
Dataset
Equipment
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Large chamber variable pressure scanning electron microscope (SEM)
Material and Chemical Characterisation (MC2)Facility/equipment: Equipment