THIS IS MY FIRST THESIS AND ANALYTICAL RESULT ON Nanotechnology in CIVIL ENGINEERING AND CONSTRUCTION

1. NANOTECHNOLOGY
IN
CIVIL ENGINEERING
AND
CONSTRUCTION

2. INTRODUCTION
Nanotechnology is not a new science and it is not a
new technology.
Nanotechnology is the use of very small particles of
material either by themselves or by their
manipulation to create new large scale materials.
It is rather an extension of the sciences and
technologies. .

3. What Is Nanotechnology
 Nanotechnology is the science of engineering that
deals with particle which are less than 100 nm in
size.
 It is the study of manipulating matter on molecular
and atomic scale.
 Nanotechnology is an enabling technology that
allows us to develop materials with improved or
totally new properties

4. Introduction to Nano-materials
2.Nano-composites1.Nano-particles
3.Carbon Nano-
tubes
4.Titanium Dioxide
(TiO2)

5. Introduction to Nano-materials
 Nano-particles
It is defined as a particle with at least one
dimension less than 200nm. Nano-particles are
made of semiconducting material and so on.
Fly ashNano-silica

6. Introduction to Nano-materials
It is produced by adding Nanoparticle to bulk
material in order to improve its bulk properties
 Nano-composites

7. Introduction to Nano-materials
 Carbon Nano-tubes
They are cylindrical with nanometer diameter. They
can be several millimeters in length. They have 5
times the Young’s modulus and8times the strength of
steel whilst being 1/6 density. Thermal conductivity
is also very high along the tube axis

8. Introduction to Nano-materials
 Titanium Dioxide (TiO2)
Titanium Dioxide is a white pigment & can be used
as an excellent reflective coating, hydrophilic and
therefore gives self cleaning properties to surfaces
to which it is applied from concrete to glass. anti-
fogging coatings or self-cleaning windows.

9. !!!

10. NANOTECHNOLOGY IN CONCRETE
Concrete is a mixture of cement, sand(fine
aggregate), coarse aggregate and water. As concrete
is most usable material in construction industry it’s
been require to improve it’s quality.
Nanotechnology can modify the molecular
structure of concrete material to improve the
material properties.

11.  IN CONCRETE, NANO PARTICLES MAINLY USED
ARE:--
1.NANO SILICA
2.TITANIUM DIOXIDE
3.CARBON-NANOTUBE
4. FLY ASH
NANOTECHNOLOGY IN CONCRETE

12. NANOTECHNOLOGY IN CONCRETE
The addition of NANO-SILICA (sio2) to concrete:
1. Reduces the calcium leaching rate of concrete ;
2. Improves durability ;
3. Increases the cohesiveness of concrete ;
4. Reduces the segregation tendency ;
5. Reduces the water permeability of hardened
concrete ;
6. Shows higher compressive and flexural strengths.

13. The addition of TITANIUM DIOXIDE to concrete:
1. TiO2 is a white pigment and can be used as an
excellent reflective coating ;
2. TiO2 breaks down organic pollutants ,volatile
organic compounds ,bacterial membrane’s through
powerful catalytic reactions ;
3. Additionally it is hydrophilic and therefore gives
self cleaning properties to surface to which it is a
plane.
NANOTECHNOLOGY IN CONCRETE

14. The addition of CARBON-NANOTUBE to concrete:
1. It produces very high compressive strength ;
2. It increases tensile strength of cement from
8 N/mm2 to 75 N/mm2 ;
3. It makes concrete fire resistant ;
4. Carbon Nanotubes can take the place of steel and
iron for giving the tensile strength.
NANOTECHNOLOGY IN CONCRETE

15. The addition of FLY ASH to concrete:
1. Improves concrete durability ;
2. Improves strength & importantly
for sustainability and replacing cement ;
3. The curing process of concrete is
slowed by addition of fly ash, at early stage
strength is also low in comparison to normal
concrete .
NANOTECHNOLOGY IN CONCRETE

16. NANOTECHNOLOGY IN CONCRETE

17.  The addition of nanoparticles of magnesium and calcium
leads to an increase in weld toughness.
 The new steel is developed with higher corrosion-
resistance ability by incorporating copper nanoparticles
 The addition of copper nanoparticles reduces the surface
unevenness of steel which then limits the number of stress
risers.
 Carbon Nanotubes provide Light weight , High thermal &
electrical conductivity,high compressive strength and
Excellent tensile strength compared to conventional
steel.
NANOTECHNOLOGY IN STEEL

18. NANOTECHNOLOGY IN STEEL
Sandvik nano flex MMFX2

19.  The use of TiO2 nanoparticles to glasses leads to
so-called self cleaning technology. Due to the
nanoparticles photocatalytic reactions, the
organic pollutants, volatile organic compounds
and bacterial membranes are decomposed.
 TiO2 being hydrophilic, his attraction to water
forms drops which then wash off the dirt particles
decomposed in the previous process.
 Fireprotective glass is obtained using fumed silica
(SiO2) nanoparticles
NANOTECHNOLOGY IN GLASS

20. NANOTECHNOLOGY IN GLASS

21. NANOTECHNOLOGY IN FIRE PROTECTION

22. NANOTECHNOLOGY IN FIRE PROTECTION
 Nano-cement made of nanosized particles has the
potential to create tough, durable, high
temperature coating by using carbon nanotubes
 Polypropylene fibres are also considered as a
method of increasing fire resistance and this is a
cheaper option than conentional insulation.

23.  TiO2 is used to coat glazing because of its sterilizing
and anti fouling properties.
 The TiO2 will break down and disintegrate organic
dirt through powerful catalytic reaction , allows the
water to spread evenly over the surface and wash
away dirt previously broken down
 Other special coatings also have been developed,
such as thermal control, energy sawing, anti-
reflection coating.
NANOTECHNOLOGY IN COATINGS

24. NANOTECHNOLOGY IN COATINGS

25.  Water purification using nanotechnology exploits
nanoscopic materials such as carbon nanotubes and
alumina fibers for nanofiltration
 The adsorption of chlorine concentration is much
higher by using nanotechnology (GAC, 350 g/m2) as
compared to conventional method of purification (PAC,
220 g/m2)
 Nanosensors, such as those based on titanium oxide
nanowires or palladium nanoparticles are used for
analytical detection of contaminants in water samples.
NANOTECHNOLOGY IN WATER
PURIFICATION

26. NANOTECHNOLOGY IN WATER
PURIFICATION

27. NANOTECHNOLOGY IN WATER
PURIFICATION

28. NANOTECHNOLOGY IN
C I V I L E N G I N E E R I N G
AND
CONSTRUCTION
More spheres:
Nano sensors for fire detecting
Nanotechnology in geotechnical field
Nanotechnologies for Thermal Insulation

29. CONCLUSION
In construction sector the use of nano technology is
limited to 33%,therefore, there is very bright future
of nano technology in construction sector…….
 Minimizes the risk
 Better efficiency
 Cost & Size reduction
 Safe Design of materials
 Sustainable Development in Construction
sector

30. Thus,
Nanotechnology in civil engineering
is definitely the present and the
future of civil engineering and
construction section.

31. REFERENCES
1. Proceedings of Indian Geotechnical Conference December 15-17,
2011, Kochi (Paper No.R-024)
2. International Journal of Basic and Applied Research Special Vol.
04 (146-151)
3. http://www.nanocon.sabrycorp.com/
4. “Nanotechnology and Concrete: background,Opportunities and
Challenges.” Proceedings of the International Conference
,Application of Technology in Concrete Design, Scotland, UK
5. Nanotechnology in Construction Nanotechnology in
Construction ,www.aggregateresearch.com
6. Syed Sabihuddin(2014) “Application Of Nanotechnology In Civil
Infrastructre”, Int. Journal of Engineering Research and
Applications,4(3)92-95