Hybrid Effect of Carbon Fiber on Piezoresistivity of Carbon Nanotube Cement-Based Composite

Abstract:

Cement-based nanocomposite filled with only 0.1 wt.% multi-wall carbon nanotube (MWNT) (MNFRC), or hybrid with 0.1 wt.% MWNT and 0.5 wt.% microsized short carbon fiber (SCF) (SF/MNFRC), were prepared employing surfactant ultrasonic dispersion and high-speed mixing process. The electrical resistivities (ρ), compressive stresses (σ), and longitudinal strains (εl) of these cured nanocomposites under cyclic uploading/unloading were simultaneously collected, to characterize their stress/strain-sensitive properties. There exists good piezoresisitivity and high strain sensitivity for MNFRC. The fractional change in ρ (Δρ) regularly descends or ascends following the σ, or the εl of MNFRC (the Δρ/εl sensitivity near 68). Hybrid of SCF is found to be more effective to improve the self-sensing repeatability and variation stability of the SF/MNFRC rather than the self-sensing sensitivity (the Δρ/εl sensitivity only about 64).

• Periodical: Advanced Materials Research (Volumes 143-144)
• Pages: 639-643
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.143-144.639
• Online since: October 2010
• Authors: Jian Lin Luo, Zhong Dong Duan, Tie Jun Zhao, Qiu Yi Li
• Keywords: Carbon Nanotube (CN), Hybrid Fiber Effect, Piezoresistivity Property, Smart Cement Material

References

[1] D.D.L. Chung: Composites: part B Vol. 31 (2000), p.511.

[2] B. G. Han and J. P. Ou: Sens. Actuators A Vol. 138 (2007), p.294.

[3] S. Iijima: Nature Vol. 354 (1991), p.56.

[4] J.M. Makar and J.J. Beaudoin: Proceedings 1st International symposium on nanotechnology in construction, ed. s P.J.M. Bartos, et al, Royal Society of Chemistry, London (2004), p.331.

[5] G.Y. Li, P. M. Wang, and X.H. Zhao: Carbon Vol. 48 (2005), p.1239.

[6] Y.S. Ibarra, J.J. Gaitero, E. Erkizia, and I. Campillo I: Phys Stat Sol A Vol. 203 (2006), p.1076.

[7] S. Wansom, N.J. Kidner, L.Y. Woo, and T.O. Mason: Cem. Concr. Compos. Vol. 26 (2006), p.509.

[8] Z. D. Duan and J.L. Luo, in: 1 st International conference on Smart Materials and Nanotechnology, edited by S. Y. Du, et al, SPIE Digital Library, Bellingham (2007), p.64230.

[9] J.M. Makar and J.J. Beaudoin: J. Am. Ceram. Soc. Vol. 92(2009), p.1303.

[10] G.Y. Li, P. M. Wang, and X.H. Zhao: Cem. Concr. Compos. Vol. 29 (2007), p.377.

[11] J.L. Luo and Z. D. Duan, in: 1st International Conference of the Chinese Society of Micro/Nano Technology, TTP publisher, Switzerland, Adv. Mater. Res. Vols. 60-61 (2009), p.475.

[12] X. Yu and E. Kwon: Smart Mater. Struct. Vol. 18 (2009), p.55.

[13] J.L. Luo, Z. D. Duan, and H. Li: Phys. Stat. Sol. A Vol. 206 (2009), p.2738.