Micromechanics modeling of the uniaxial strain-sensing property of carbon nanotube cement-matrix composites for SHM applications

2017 ◽  
Vol 163 ◽  
pp. 195-215 ◽  
Author(s):  
Enrique García-Macías ◽  
Antonella D'Alessandro ◽  
Rafael Castro-Triguero ◽  
Domingo Pérez-Mira ◽  
Filippo Ubertini
Keyword(s):  
Carbon Nanotube ◽  
Uniaxial Strain ◽  
Cement Matrix ◽  
Matrix Composites ◽  
Strain Sensing ◽  
Micromechanics Modeling

Micromechanics modeling of the electrical conductivity of carbon nanotube cement-matrix composites

2017 ◽  
Vol 108 ◽  
pp. 451-469 ◽  
Author(s):  
Enrique García-Macías ◽  
Antonella D'Alessandro ◽  
Rafael Castro-Triguero ◽  
Domingo Pérez-Mira ◽  
Filippo Ubertini
Keyword(s):  
Electrical Conductivity ◽  
Carbon Nanotube ◽  
Cement Matrix ◽  
Matrix Composites ◽  
Micromechanics Modeling

Mechanical and Strain-Sensing Properties of Cement-Matrix Composite Containing Nano-Sized Carbon Black

2019 ◽  
Vol 815 ◽  
pp. 203-209
Author(s):  
Yan Feng Wang ◽  
Yi Zhao ◽  
Xiao Hua Zhao ◽  
Ran Hai
Keyword(s):  
Carbon Black ◽  
Compressive Loading ◽  
Cement Matrix ◽  
Structural Function ◽  
Matrix Composites ◽  
Strain Sensing ◽  
Reinforced Composite ◽  
Carbon Fiber Reinforced Composites ◽  
Reinforced Cement ◽  
Experimental Researches

An experimental researches was performed for carbon black-reinforced cement-matrix composites. The carbon black used was in the form of particles with a nano-size. Results show that when content of the carbon black is between 0.25% and 0.75% by weight of cement, both flexural and compressive strengths of the composite can be enhanced. Flexural strength increases up to 9.69%, and compressive strength increases up to 6.92%, respectively. Moreover, the carbon black-reinforced composite is of high strain-sensing ability. The fractional change in resistance () increases monotonically upon compressive loading, and decreases monotonically upon unloading. These properties indicate that the carbon black-reinforced composite can be used for structural function, while at the same time act as a strain sensor itself. Compared with carbon fiber-reinforced composites, the carbon black-reinforced composite has a low price and is easy for mixing.

Effects of dispersants and defoamers on the enhanced electrical performance by carbon nanotube networks embedded in cement-matrix composites

2020 ◽  
Vol 243 ◽  
pp. 112193 ◽  
Author(s):  
Kyungwho Choi ◽  
Yun Kyung Min ◽  
Wonseok Chung ◽  
Sang-Eui Lee ◽  
Seok-Won Kang
Keyword(s):  
Carbon Nanotube ◽  
Electrical Performance ◽  
Cement Matrix ◽  
Matrix Composites ◽  
Carbon Nanotube Networks

Investigations on scalable fabrication procedures for self-sensing carbon nanotube cement-matrix composites for SHM applications

2016 ◽  
Vol 65 ◽  
pp. 200-213 ◽  
Author(s):  
Antonella D'Alessandro ◽  
Marco Rallini ◽  
Filippo Ubertini ◽  
Annibale Luigi Materazzi ◽  
Josè Maria Kenny
Keyword(s):  
Carbon Nanotube ◽  
Cement Matrix ◽  
Matrix Composites

scholarly journals A Review: Carbon Nanotube-Based Piezoresistive Strain Sensors

2012 ◽  
Vol 2012 ◽  
pp. 1-15 ◽  
Author(s):  
Waris Obitayo ◽  
Tao Liu
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Composite Films ◽  
Strain Sensors ◽  
Voltage Response ◽  
Strain Sensing ◽  
Multiwalled Carbon ◽  
Sensing Applications ◽  
Mechanical Deformations ◽  
Electrical Resistivities

The use of carbon nanotubes for piezoresistive strain sensors has acquired significant attention due to its unique electromechanical properties. In this comprehensive review paper, we discussed some important aspects of carbon nanotubes for strain sensing at both the nanoscale and macroscale. Carbon nanotubes undergo changes in their band structures when subjected to mechanical deformations. This phenomenon makes them applicable for strain sensing applications. This paper signifies the type of carbon nanotubes best suitable for piezoresistive strain sensors. The electrical resistivities of carbon nanotube thin film increase linearly with strain, making it an ideal material for a piezoresistive strain sensor. Carbon nanotube composite films, which are usually fabricated by mixing small amounts of single-walled or multiwalled carbon nanotubes with selected polymers, have shown promising characteristics of piezoresistive strain sensors. Studies also show that carbon nanotubes display a stable and predictable voltage response as a function of temperature.

scholarly journals Carbon Fiber Cement-Matrix Composites

TANSO ◽  
1999 ◽  
Vol 1999 (190) ◽  
pp. 300-312 ◽  
Author(s):  
D. D. L. Chung
Keyword(s):  
Carbon Fiber ◽  
Cement Matrix ◽  
Matrix Composites
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