Self-Sensing Property of Cementitious Nanocomposites Hybrid with Nanophase Carbon Nanotube and Carbon Black

Jian Lin Luo; Zhong Dong Duan; Tie Jun Zhao; Qiu Yi Li

doi:10.4028/www.scientific.net/AMR.143-144.644

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 143-144Self-Sensing Property of Cementitious...

Self-Sensing Property of Cementitious Nanocomposites Hybrid with Nanophase Carbon Nanotube and Carbon Black

Abstract:

Cementitious composite filled with only 0.1 wt% multi-walled carbon nanotube (MWCNT) (MNTCC), or hybrid with 0.1 wt% MWCNT and 0.5 wt% nanophase carbon black (NCB) (NB/MNTCC), were prepared employing surfactant ultrasonic dispersion and subsequently high-speed mixing process. The electrical resistivities (ρ), compressive stresses (σ), and longitudinal strains (εl) of these cured nanocomposites under cyclic loading (10 times) were simultaneously collected, to investigate their piezoresistivty properties. Results revealed that, hybrid of NCB is very effective for enhancement on the stress/strain sensitivity of NB/MNTCC (the strain sensitivity up to 107, much higher than that of MNTCC 67), but there is almost no improvement on the self-sensing repeatability and variation stability of the corresponding nanocomposite.

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Periodical:

Advanced Materials Research (Volumes 143-144)

Pages:

644-647

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.143-144.644

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Online since:

October 2010

Authors:

Jian Lin Luo, Zhong Dong Duan, Tie Jun Zhao, Qiu Yi Li

Keywords:

Carbon Nanotube (CN), Hybrid Effect, Nanophase Carbon Black, Self-Sensing Property, Smart Cement-Based Material

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