Abstract
The cement-based sensors have a great potential for structural health monitoring, especially functional sensors filled with nano-carbon black (NCB) particles. To improve the sensing efficiency of NCB filled cementitious composite, polypropylene (PP) fibres were premixed with NCB during the manufacturing of cement-based sensor. Although the compressive strength is slightly decreased, the electrical conductivity and piezoresistivity of the NCB filled cementitious composite are improved by PP fibres. Microstructural characterization indicated that NCB attached to the surface of PP fibres significantly promotes the generation of conductive paths and contact points in cement-based sensors. The results can provide a new insight into the application of nonconductive fibres to enhance the conductivity and piezoresistivity of spherical conductors filled cement-based sensor.
| Original language | English (US) |
|---|---|
| Article number | 127736 |
| Journal | Materials Letters |
| Volume | 270 |
| DOIs | |
| State | Published - Jul 1 2020 |
Funding
The authors appreciate the supports from Australian Research Council (ARC) (DE150101751) and University of Technology Sydney Research Academic Program at Tech Lab (UTS RAPT).
Keywords
- Cement-based sensor
- Nano-carbon black (NCB)
- Piezoresistivity
- Polypropylene fibre
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering