TY - GEN
T1 - Hybrid effect of carbon fiber on piezoresistivity of carbon nanotube cement-based composite
AU - Luo, Jianlin
AU - Duan, Zhongdong
AU - Zhao, Tiejun
AU - Li, Qiuyi
PY - 2011
Y1 - 2011
N2 - 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 (ε1) 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 el of MNFRC (the Δρ/ε1 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/ε1 sensitivity only about 64).
AB - 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 (ε1) 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 el of MNFRC (the Δρ/ε1 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/ε1 sensitivity only about 64).
KW - Carbon nanotube
KW - Hybrid fiber effect
KW - Piezoresistivity property
KW - Smart cement material
UR - https://www.scopus.com/pages/publications/78650743371
U2 - 10.4028/www.scientific.net/AMR.143-144.639
DO - 10.4028/www.scientific.net/AMR.143-144.639
M3 - 会议稿件
AN - SCOPUS:78650743371
SN - 9780878492237
T3 - Advanced Materials Research
SP - 639
EP - 643
BT - Smart Materials and Intelligent Systems
T2 - International Conference on Smart Materials and Intelligent Systems 2010, SMIS 2010
Y2 - 17 December 2010 through 20 December 2010
ER -