This document discusses the potential applications of nanotechnology in civil engineering. It begins by outlining some of the disadvantages currently faced in construction such as structures weakening over time and safety issues. It then explains how nanotechnology could help address these issues by enabling lighter, stronger materials with improved durability and lower maintenance costs. Specific examples discussed include using nano-silica or fly ash to enhance concrete properties, carbon nanotubes to improve mechanical performance, and nano titanium for self-cleaning and protective coatings. Additional applications mentioned are high strength steel cables, fatigue resistance, self-healing materials, insulation, environmental remediation, and energy production. In conclusion, the document states that nanotechnology could have a profound influence on

1. NANOTECHNOLOGY IN
CIVIL ENGINEERING
3 February 2017 1

2. •Concept Of Construction
•Disadvantages faced in the field of construction
Weakened with progress of time
Results in Loss of Life and Capital
•Importance of Nanotechnology
In design and Construction
Lighter Structure
Stronger Structural Composites
3 February 2017 2

3. Low maintenance cost
Better properties of cementitious material
Increasing the reflectivity of glass
NANOTECHNOLOGY
• Engineering of functional system at molecular
level
• Size - 0.1nm – 1.00nm
3 February 2017 3

4. *Nano materials in concrete
Speed up the of C-S-H gel formation
Improve mechanical and durability properties
*Nano particles added are
Nano Silica (SiO2)
Improves particle packing
Augments strength of hardened concrete
3 February 2017 4

5. Repulsion towards water absorption
Prevents calcium leaching
 Fly ash
Reduce the curing time
Improves concrete stability
Increases the strength of concrete
3 February 2017 5

6. Carbon Nanotubes
Improves Mechanical Properties
Increases Compressive Strength and Flexural Strength
Disadvantage - formation of clumps
 Nano Titanium (TiO2)
Self Cleansing
Excellent Reflective Coating
Block UV and Infrared Rays
3 February 2017 6

7. Self Compacting Concrete
Less energy needed to produce concrete structures
Reduced wear and tear on formwork
Improves Mechanical properties
Increases Compressive Strength and Flexural
Strength
Disadvantage - Formation of clumps
3 February 2017 7

8. Fig.1 The bridge across the River
Fulda in Kassel, made of ultra
high performance concrete
Fig.2 Building made by using self-cleaning
concrete (Church ‘‘Dives in
Misericordia”, Rome, Italy)
3 February 2017 8

9. • High Strength Steel Cables
Refinement of cementite phase of steel to a
nano-size are stronger
Reduce materials in suspension bridges and
precast concrete
Reduce costs and period of construction
3 February 2017 9

10. • Fatigue
Progressive and localized structural damage
Occurs under repeated loading and unloading
At stresses lower than the yield stress of structure
Shortening of life period
Adding copper nano particle
 Provide a smooth and even surface
Reduces stress and limit fatigue
3 February 2017 10

11. • Carbon Nanotubes
Light in weight
High strength
High thermal & electrical conductivity
 Can with stand high compressive strength
Excellent in tensile strength compared to conventional
steel
Temperature in steel manufacturing – affect – CNT
properties
3 February 2017 11

12. •Two new products available
Sandvik Nanoflex
high strength and good ductility
Good weld ability
MMFX2
Three times stronger than normal steels
Corrosion resistance and strength
Lower maintenance costs
3 February 2017 12

13. Fig.3 Sandvik Nano Flex Fig.4 MMFX2
3 February 2017 13

14. Composed of nanotubes
namely Lignocelluloses
Provide self-sterilizing
surfaces and internal self repair
High Water Repellency
Resistance to Biological
Agents and Fire
Improve Water-Resistance
Fig.5 Nano Coatings For Floor Finishes
3 February 2017 14

15. * Self cleansing glass
* Nano TiO2 used
 Sterilizing
 Anti fouling properties
* Breaks down organic pollutant, volatile organic
compounds and bacterial compounds
3 February 2017 15

16. *Fire protection glass
 Silica Nano particles sandwiched between glass
panels
*Blocks light and heat coming in through windows
*Electro chromic coatings
Reduces energy use in cooling buildings
3 February 2017 16

17. Fig.6 Nano Coating On Glass Fig.7 Ultra Thin Glass Protective
Coating
3 February 2017 17

18. • Self-healing Capability
• Hydrophobic - Repels Water from Metal Pipe
• Protect Metal from Salt Water Attack
• Provide Better Adhesion and Transparency
• Lotus Spray - 20 times More Water Repellent than
smooth wax coating
• Reflect, Transmit Lights in Different Wavelength
3 February 2017 18

19. • Silica Aero Gel
provide : Aesthetic
Appearance and
Thermal Insulation
• TiO2 - Photo Catalytic
Process
Fig.8 Forth Bridge
3 February 2017 19

20. *Used as a Tough, Durable, High Temperature
Coating
* CNT’s with cementitious material provide Higher
Strength
* Cheaper Option compared to conventional insulation
3 February 2017 20

21.  Stearic Acid (Natural Saturated Vegetable Oil)
- Used In Grinding With Cement
Reduce Energy Use
Avoid Loss Of Strength
 Iron Nano Particles
Transform, Detoxify Chlorinated Hydrocarbons In
Ground Water
 Dendrimers - Enhance Environmental Clean-up
3 February 2017 21

22. * Prevents Formation Of Fog and Mist on windows and mirrors
* Improves Aesthetics and Performance of Exterior Surface
* Provide Thermal Protection and Insulation
Aero Gel Material
Light Transmitters
Eliminate Need Of Curtains
Moisture and Fungus Resistance
3 February 2017 22

23. Nano based wood protective
coating
Prevents water infiltration
Protection against UV rays
Prevents darkening of
surface
Nano covers on glass
Self cleaning
Antireflective coatings
Fig.9 Cleaning Ability Of Roof Tiles With
Hydrophobic Covers
3 February 2017 23

24. Anti-fog coatings
Water absorbent
Nano technology in energy production
Light emitting diodes with high energy
efficiency
Solar cells with transparency and aesthetic
characteristics
3 February 2017 24

25. *Influence Profound and Promising in Civil
Engineering
* Perfect Alternative Material
* Even though it is an extrapolation of current ones to
new scale
* Limitation - High Cost
*Concerns about environment and health
* Wide scope stands intact for this technology
3 February 2017 25

26. 1. Alsaffar, K. A.;(2014) “Review Of The Use Of Nanotechnology In
Construction Industry” International Journal Of Engineering
Research And Development.8(10):67-70
2. Faruk, N. M. A.; Chen, D. H.; Mushota,C.; Muya, M.; and
Walubita, L. F. (2014) “Application Of Nanotechnology In
Pavement Engineering: A Literature Review ” Application Of
Nanotechnology In Pavements, Geological Disasters, And
Foundation Settlement Control Technology GSP 244©ASCE 9-
16
3. Javad F. H. S, Zeynali R, Shahsavari F, Alamouti Z. M;(
2015)“Study of Nanotechnology Application in Construction
Industry.”
3 February 2017 26

27. 4. Mulenga, D.M. and Robery, P.C.(2010), “Can
Nanotechnology Address Today’s Civil Engineering
Challenges”, Structure Congress ©ASCE 609-621
5. Rana1, A. K.Rana, S. B. Kumari, A. and Kiran, V.(2009)
“Significance Of Nanotechnology In Construction
Engineering.”International Journal Of Recent Trends In
Engineering,©ACEEE,1(4)46-48
6. Syed Sabihuddin(2014) “Application Of Nanotechnology In
Civil Infrastructre”, Int. Journal of Engineering Research and
Applications,4(3)92-95
3 February 2017 27

28. 3 February 201728