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Company 
LOGO 
Smart Concrete 
KIRTAN ADHIKARI EDC 2010050 
1
CONTENT 
1. INTRODUCTION 
2. INVENTOR AND INVENTION 
3. SELF SENSING CONCRETE 
4. LABORATORY EXPERIMENT 
5. RESULT AND DIS...
INTRODUCTION 
Concrete that is itself a sensor of strain or stress. 
The sensing ability is not due to the embedment or ...
INTRODUCTION 
The sensing ability of smart concrete are based on the change of electrical resistance. 
4
INVENTOR AND INVENTION 
Invented by Professor Deborah Chung in University at Buffalo, State University of New York. (1993...
Self Sensing Concrete 
1.Smart Concrete Produced From Short Carbon Fibres 
2.Smart Concrete Produced from CNTs 
6
Self Sensing Concrete 
1.Smart Concrete Produced From Short Carbon Fibres 
 Contain short carbon fibres, typically 5 mm i...
Self sensing concrete 
8
Self sensing concrete 
2. Smart Concrete Produced from CNTs 
Carbon nanotubes (CNTs) are seamless tubular structures. 
T...
Self sensing concrete 
10
 The mix was prepared with: 
 Fibre content is 0.2 vol. % of cement 
 Silica fume content is 15% by weight 
of cement 
...
EXPERIMENT 
12
EXPERIMENT 
13
RESULT AND DISCUSSION 
14
CONCLUSION 
•The piezoresitive property of carbon nanotubes/CFs enables the composite to detect the stress/stain inside th...
RFERENCES 
REFERENCES 
[1] B. Demirel, S. Yaziciog˘lu and N. Orhan. (December 2006). Electrical behaviour of carbon fibre-...
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Smart concrete

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Smart concrete: Concrete that can sense stresses

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Smart concrete

  1. 1. Company LOGO Smart Concrete KIRTAN ADHIKARI EDC 2010050 1
  2. 2. CONTENT 1. INTRODUCTION 2. INVENTOR AND INVENTION 3. SELF SENSING CONCRETE 4. LABORATORY EXPERIMENT 5. RESULT AND DISCUSSION 2
  3. 3. INTRODUCTION Concrete that is itself a sensor of strain or stress. The sensing ability is not due to the embedment or attachment of sensors.  The concrete has been modified through the use of admixtures so that it becomes a sensor 3
  4. 4. INTRODUCTION The sensing ability of smart concrete are based on the change of electrical resistance. 4
  5. 5. INVENTOR AND INVENTION Invented by Professor Deborah Chung in University at Buffalo, State University of New York. (1993) 5
  6. 6. Self Sensing Concrete 1.Smart Concrete Produced From Short Carbon Fibres 2.Smart Concrete Produced from CNTs 6
  7. 7. Self Sensing Concrete 1.Smart Concrete Produced From Short Carbon Fibres  Contain short carbon fibres, typically 5 mm in length Fibre content is 0.2 vol. % of cement Silica fume content is 15% by weight of cement Methylcellulose content is 0.4% by weight of cement 7
  8. 8. Self sensing concrete 8
  9. 9. Self sensing concrete 2. Smart Concrete Produced from CNTs Carbon nanotubes (CNTs) are seamless tubular structures. The diameters of CNTs are in the range of 1~20 nm  The lengths are in the range of 0.2~5 μm. 9
  10. 10. Self sensing concrete 10
  11. 11.  The mix was prepared with:  Fibre content is 0.2 vol. % of cement  Silica fume content is 15% by weight of cement  Methylcellulose content is 0.4% by weight of cement 1. The mix was molded into square shape with 2 embedded electrode, 1 cm apart. 2. The specimen were cured at standard temperature of 20 degrees centigrade and 100 % humidity. 3. Specimens were dried at temperature of 50 degrees centigrade for 5 days. EXPERIMENT 11
  12. 12. EXPERIMENT 12
  13. 13. EXPERIMENT 13
  14. 14. RESULT AND DISCUSSION 14
  15. 15. CONCLUSION •The piezoresitive property of carbon nanotubes/CFs enables the composite to detect the stress/stain inside the pavement. •Experimental results demonstrated that the CNT/cement composite function as excellent stress/strain sensors 15
  16. 16. RFERENCES REFERENCES [1] B. Demirel, S. Yaziciog˘lu and N. Orhan. (December 2006). Electrical behaviour of carbon fibre-reinforced. Magazine of Concrete Research, 7. [2] Chung, D. D. (2006). The Road to Scientific Success. Singapore: World Scientific Pubilishing Co.Pte.Ltd. [3] Chung, D. D. (1994). Carbon Fiber Composite. Washington: Butterworth-Heinemann. [4] Chung, D. D. (13 October 1994). Strain sensor based on resistance change accompanying the reversible pull-out of conducting short fibers in a less conducting matrix. Smart Mater. Strum. [5] Dr. Xun Yu, Dr. Eil Kwon. (April 2012). Carbon Nanotube Based Self-sensing Concrete for Pavement. Washington: University of Minnesota Duluth. 16 [1]

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