nano technology expert | lecturer at...
TRANSCRIPT
Nano Technology Expert | Lecturer at Al-Imam
Mohammed Bin Saud University, Riyadh
Lecturer at Al-Imam Mohammad Bin Saud University,
Riyadh , KSA
Bachelor in Chemistry, KSA
Diploma in English, Canada
Master's in Nanotechnology, Australia
Personal Development Coach
1. What/Why Nanotechnology?
2. Identification of different applications of
nanotechnology in constructions
3. Various nanomaterials in constructions
4. Real life examples
DEFINITION OF NANOTECHNOLOGY
WHAT IS NANO SCALE?
One nanometer (1 nm) is about 3 atoms long.
1 nm is equal to a billionth of a meter (10 -9 m).
Nanotechnology is defined as a material,
device, or system, which can be precisely
controlled in shape and size at a nanoscale.
This can be fabricated in particular designs,
productions, characterizations and used in
various applications.
“Bottom-Up Approach”
Creating Nano-scale
materials by physically or
chemically breaking down
large materials.
Assembling Nano materials
atom-by-atom or molecule-by-
molecule (self assembling).
what makes it important?
Applications of Nanotechnology in
Construction & Buildings
Nanotechnology is widely used in
construction material such as:
In Concrete
In Steel
In coating
In Glass & Ceramic
In Wood
Nanotechnology can modify the structure
of concrete material and finally improves
in properties of materials as:
1. Bulk density
3. Volume stability
4. Durability
2. Mechanical performance
5. Sustainability of concrete
Types of Nanomaterial used in concrete:
- (1%) Carbon nanotubes/nanofibers (CNTs/ CNFs)
- Nano silica (𝑛𝑎𝑛𝑜 𝑆𝑖𝑂2)
- Titanium dioxide (𝑛𝑎𝑛𝑜 𝑇𝑖𝑂2)
- Nanoclay particles
- Nano-iron (𝑛𝑎𝑛𝑜 𝐹𝑒2𝑂3)
Disadvantages:
Fatigue (stress rises)
small resistance against fire (>750 F)
Brittle' Under certain conditions steel
may lose its ductility (HAZ)
Need of Nanomaterials in Steel:
Vanadium (V) and molybdenum (Mo) NPs >>>
improve the delayed fracture problems associated
with high strength bolts
Magnesium (Mg) and calcium (Ca) NPs makes
the (HAZ) grains finer in plate steel >>> increase
in weld toughness
Copper NPs >>> reduces the surface roughness/
unevenness of steel & increases safety
Two international products of nanostructured steel
alloys in market:
Sandvik Nanoflex: (high qualities of a high
Young’s Modulus, high strength and
resistant to corrosion)
MMFX2 steel: Improved mechanical
properties compered to conventional steel
Fire protection (𝑛𝑎𝑛𝑜 𝑆𝑖𝑂2)
Self- cleaning & anti-dirt/fouling
surfaces (𝑛𝑎𝑛𝑜 𝑇𝑖𝑂2)
https://www.youtube.com/watch?v=hmHVeHsF8KA
𝒏𝒂𝒏𝒐 𝑇𝑖𝑂2 coatings on roads
for pollution reduction
Nano house , Australia
• Addition of Nanoparticles have shown significant
improvements than conventional construction
materials
• It is infinitely big and will make a lot of inventions
come true in construction and buildings
• http://www.nano.utexas.edu/resources
• https://www.slideshare.net/makadelhi/nanotechnology-11514618
• https://www.asme.org/engineering topics/articles /bioengineering / nanotechnology-connects-dots-disease-detection
• https://www.iupac.org/publications/ci/2009/31
• https://www.slideshare.net/subashjohn1/nano-solar-cells01/4 coulsey.html
• http://www.nanocare-ag.com/glas_keramik/
• http://www.seminarsonly.com/Civil_Engineering/nano-concrete-seminar-ppt.php
• https://www.slideshare.net/abiramprince/nanotechnology-for-security
• https://www.hessen-nanotech.de/mm/NanoEnergy_web.pdf
• http://www.nanowerk.com/what_is_graphene.php
• https://www.youtube.com/watch?v=qSYnGxzHA00
• http://www.understandingnano.com/nanotechnology-energy.html
• http://www.nanowerk.com/nanotechnology-in-energy.php