nano technology in civil engineering

2. • “Nano technology Is an technology that allows us to develop
material with improve or totally new properties”.
• Nanotechnology is the use of very small particle of material.
A nanometre is a billionth of a metre.
• The size of the particles is very important because at the length
scale of the nanometre , 10-9m, the properties of the material
actually become affected.
• Recently, India has overtaken Germany in fourth place,
behind the China, United States, and South Korea.

14. • In most of the construction work glass is used on
the exterior surface of building.
• Nano technology solutions to the different
problems like its cleaning & heat coming
through windows.

16. Coatings - Inorganic
Self-cleaning glass
Nano-TiO2 coated
glass
transparent TiO2
conventional
glass
self-cleaning
glass

18. • Fire protection glass is another application of nanotechnology.
• This is achieved by using a clear intumescent layer sandwiched
between glass panels (an interlayer ) formed of fumed silica (Sio2)
nanoparticle which turns into a rigid and opaque fire shied when
heated .
• For heat protection thin film coating are being developed which
are spectrally sensitive surface application for window glass and
filter out unwanted infrared frequencies of light (which heat up a
room )and reduce the heat gain in building. However ,these are
effectively a passive solution

19. • Compressive strength and Flexural strength of
Concrete can increased by +25 N/mm2 and +8
N/mm2 respectively.
• Limits the stress risers in steel by using copper
nanoparticle.
• Self cleaning property can be achieved in glass.
• Glass can be made Fire resistant and heat insulated .