APPLICATION OF NANO-TECHNOLOGY

IN CONSTRUCTION SECTOR

Akshay Kaushal

Deptt. Of Civil Engg.

Green Nano-technology in Construction

Akshay Kaushal

Deptt. Of Civil Engg.

NANO TECHNOLOGY- CHANGING THE FUTURE

“Nano Technology is the ability to measure, see, predict, and make things on the scale of Nano.”

Nano signifies 10-9 i.e. one billon of something.

FEATURES OF NANO-STRUCTURED MATERIALS

Gaining control of materials at the nanoscale brings different laws of physics into play.

Traditional materials show radically enhanced properties when engineered at the nanoscale.

FIELDS OF APPLICATION

Medical Sciences

Agriculture

Automobile Sector

Energy Sector

Aeronautics

Computer & Electronics Sector

Construction Sector

ADVANTAGES OF NANO TECHNOLOGY

Increased durability & Functionality

Increased precision

Increased productivity

Weight reduction

Cost & Size reduction

Safe Design of materials.

Sustainable Development in Building Construction.

Lighter & stronger structural composites.

Better cementitious properties.

Better thermal properties.

Some More Advantages Are . . .

NANO TECHNOLOGICAL ENHANCED MATERIALS

Cement

Steel

Glasses

Timber

Coatings

Water treatment

Photovoltaic solar cell

Nano sand

Ceramics

Metals

Acoustic absorber

Pipes

CARBON NANO TUBES

Carbon nano-tube is a form of carbon in cylindrical shape, their name comes from their nano meter

diameter.

ADVANTAGES OF CARBON NANO TUBES . . .

Heat of hydration reduces and strength of cement

increases.

Photovoltaic Solar Cell - increase it’s output.

Strength of steel.

Water Treatment.

NANO TECHNOLOGY IN CEMENT

It is also been reported that adding small Amount of carbon nanotube (1%) by weight ;

Increasing compressive strength

Increasing flexural strength

Reduces cracking

ADVANTAGES OF CARBON NANO TUBES IN CONCRETE

It produces very high

compressive strength than

OPC & PPC.

It increases tensile strength of

cement from 8 N/mm2 to 75

N/mm2 .

It makes concrete fire

resistant.

NANO TECHNOLOGY IN STEEL

Nano technology produces high strength steel cables and bars.

Increased Safety.

less need for monitoring.

more efficient materials.

NANO TECH BASED COATINGS

Reduce energy use

Moisture resistant

Low concentration of VOC.

Nansulate thermal insulation coatings offer you a way to increase thermal resistance in a clear coating which is applied like paint.

NANO COATED GLASS

Tracks sun, wind and rain in order to control the building environment and contribute to sustainability.

ADVANTAGES OF NANO COATED GLASS

Reduces energy bills by 30% or more in cold and hot weather.

Self Cleaning.

Easy installation.

Low maintenance.

NANOTECH COATED WOODS

In wood, nanotechnology has been introduced via nano-particle additives and creation of nano-sized resins and particles through the sol-gel process, which increases efficiency of wood.

ADVANTAGES OF NANOTECH COATINGS ON WOOD

Advanced Nano Coatings are VOC – free.

It gives excellent surface.

Nano pigments reflect and selectively filter UV

radiation.

It gives self cleaning dirt free surface.

CERAMICS (TILES & SANITARY WARE)

• Ease to clean surfaces.

• Antibacterial & Hygienic.

• Scratch resistant & Anti skid in nature.

• Durable & Fire resistant.

• But 20 to 50 percent more expensive.

SOME NANO COATED STRUCTURES

COATED STRUCTURES

Suvarnabhumi International Airport in Bangkok, Thailand

The US General Services Administration (GSA), with Nanotech Coated Glass

Nanotech coated house

MATERIALS BEFORE COATING

Stainless steel prone to brown discoloration

MATERIALS AFTER COATING

Shining & Lustres'

NANO TECHNOLOGY BASED PHOTOVOLTAIC CELLS

• Use of dye-sensitized nano-TiO2 instead of traditional silicon.

• Large surface area increases photovoltaic efficiency.

• Lower material and processing costs.

ELECTRICITY GENERATION PROCESS

NANO TECHNOLOGY IN WATER TREATMENT

Bio Fouling

Deactivating Pathogens

Kill Microorganisms

Nano wires and carbon nano tubes have ability to purifying the water.

WATER TREATMENT PROCESS

High-speed water sterilization device

NANO-ADDITIVE FIRE RETARDANTS

• Polymer nanocomposites filled with clay, CNTs, etc., possess improved flammability resistance.

• Reduces heat release by formation of surface cover.

INSULATION

• 2 – 8 times more effective than traditional insulation materials.

• Light in weight due to 96% of volume being air.

e.g. aerogel and pyrogel.

CONCLUSION

Minimizes the risk

Better efficiency

Cost & Size reduction

Safe Design of materials

Sustainable Development in Construction sector

In construction sector the use of nano technology is limited to 33%,therefore, there is very bright future of nanotechnology in construction sector .

Thus it provides both safety and economy in construction