A carbon nanotube/cement composite with piezoresistive properties

This paper studies the piezoresistive property of the CNT/cement composite to explore its feasibility as an embedded stress sensor for civil structures such as roadways, levees and bridges. The experimental results show that the electrical resistance of the CNT/cement composite changes with the compressive stress level, indicating the potential of using the CNT/cement composite as a stress sensor for civil structures. The piezoresistive responses of the composite with different fabrication methods and CNT doping levels were also studied. It is found that dispersion-assistant surfactants could block the contacts among carbon nanotubes, thus impairing the piezoresistive response of the composite, while a higher CNT doping level could improve the sensitivity of the composite stress response.

[1]  J. Luh,et al.  CARBON NANOTUBE/CEMENT COMPOSITES - EARLY RESULTS AND POTENTIAL APPLICATIONS , 2005 .

[2]  Xiaohua Zhao,et al.  Mechanical behavior and microstructure of cement composites incorporating surface-treated multi-walled carbon nanotubes , 2005 .

[3]  W Zhang,et al.  Carbon nanotube/polycarbonate composites as multifunctional strain sensors. , 2006, Journal of nanoscience and nanotechnology.

[4]  Mark J. Schulz,et al.  A carbon nanotube strain sensor for structural health monitoring , 2006 .

[5]  Jinping Ou,et al.  Piezoresistive Cement-based Strain Sensors and Self-sensing Concrete Components , 2009 .

[6]  Sihai Wen,et al.  A comparative study of steel- and carbon-fibre cement as piezoresistive strain sensors , 2003 .

[7]  K A Stelson,et al.  Carbon nanotube based transparent conductive thin films. , 2006, Journal of nanoscience and nanotechnology.

[8]  Sihai Wen,et al.  Piezoresistivity in continuous carbon fiber cement-matrix composite , 1999 .

[9]  Meijie Tang,et al.  Reversible electromechanical characteristics of carbon nanotubes underlocal-probe manipulation , 2000, Nature.

[10]  Zhuoqiu Li,et al.  A study of piezoelectric properties of carbon fiber reinforced concrete and plain cement paste during dynamic loading , 2000 .

[11]  C. Hierold,et al.  Fabrication of single-walled carbon-nanotube-based pressure sensors. , 2006, Nano letters.

[12]  D.D.L. Chung,et al.  Piezoresistivity in continuous carbon fiber polymer-matrix and cement-matrix composites , 2000 .

[13]  Terry M. Tritt,et al.  Mechanical properties of vapor-grown carbon fiber , 1995 .

[14]  Bin Liu,et al.  A molecular mechanics approach for analyzing tensile nonlinear deformation behavior of single-walled carbon nanotubes , 2007 .

[15]  Meyya Meyyappan,et al.  Carbon Nanotubes: Science and Applications , 2007 .

[16]  Bingqing Wei,et al.  Production of short multi-walled carbon nanotubes , 1999 .

[17]  Ho Gyu Yoon,et al.  Electrical conductivity of chemically modified multiwalled carbon nanotube/epoxy composites , 2005 .

[18]  Graciela B. Blanchet,et al.  Self-assembled three-dimensional conducting network of single-wall carbon nanotubes , 2004 .

[19]  J. Bahr,et al.  Water‐Based Single‐Walled‐Nanotube‐Filled Polymer Composite with an Exceptionally Low Percolation Threshold , 2004 .

[20]  D. Chung,et al.  Piezoresistive Cement-Based Materials for Strain Sensing , 2002 .

[21]  H. Dai,et al.  Electromechanical properties of metallic, quasimetallic, and semiconducting carbon nanotubes under stretching. , 2003, Physical review letters.

[22]  T. Chou,et al.  Carbon Nanotube Networks: Sensing of Distributed Strain and Damage for Life Prediction and Self Healing , 2006 .

[23]  Qian Wang,et al.  Piezoresistance of carbon nanotubes on deformable thin-film membranes , 2005 .

[24]  S. Iijima.  Helical microtubules of graphitic carbon , 1991, Nature.

[25]  Satish Nagarajaiah,et al.  Nanotube film based on single-wall carbon nanotubes for strain sensing , 2004 .

[26]  Rajesh Rajamani,et al.  Carbon nanotube-based transparent thin film acoustic actuators and sensors , 2006 .