About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Nanocomposite Materials: Innovations in Design, Fabrication, and Applications
|
| Presentation Title |
Influence of Carbon Black Nanoparticle and Carbon Nanotube Contents on the Mechanical and Piezoresistive Performance of Self-Sensing Cementitious Composites |
| Author(s) |
Diogo Cesar Pereira, Gustavo Henrique Nalon, Caio Cimino, Thaís Oliveira |
| On-Site Speaker (Planned) |
Caio Cimino |
| Abstract Scope |
The development of smarter and more durable infrastructure has driven research on self-sensing cementitious composites capable of integrating structural and structural health monitoring functions. This study investigated the mechanical and electromechanical behavior of self-sensing cementitious composites incorporating carbon black nanoparticles (CBN) and carbon nanotubes (CNT). Composites containing 2.75 wt.% conductive fillers, relative to binder mass, were produced by varying the CBN/CNT ratio. The investigated properties included compressive strength, electrical resistivity, and piezoresistive response under cyclic loading. The results showed that the CBN/CNT ratio significantly affected the formation of the conductive network, influencing both the mechanical properties and the electromechanical response of the composites. In particular, replacing 10% of CBN with CNT increased electrical conductivity while reducing the gauge factor. This behavior suggests a transition from a tunneling-dominated percolation regime to a contact conduction regime, resulting in lower piezoresistive sensitivity. |
| Proceedings Inclusion? |
Planned: |