Use of Nanotechnology in Civil Engineering
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Nano-technology has many applications in the construction sector including stronger and lighter building materials. Carbon nano-tubes added to cement increase compressive and flexural strength while reducing cracking. Nano coatings on glass, wood, and other materials provide benefits such as self-cleaning, moisture resistance, and increased thermal insulation. Nano-technology also has uses in photovoltaic cells, water treatment, fire retardants, and insulation. Overall, nano-technology offers potential for safer and more sustainable construction with cost and size reductions.
Use of Nanotechnology in Civil Engineering
- 1. APPLICATION OF NANO- TECHNOLOGY IN CONSTRUCTION SECTOR Akshay Kaushal Deptt. Of Civil Engg.
- 2. Green Nano-technology in Construction Akshay Kaushal Deptt. Of Civil Engg.
- 3. 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.
- 4. 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.
- 5. FIELDS OF APPLICATION Medical Sciences Agriculture Automobile Sector Energy Sector Aeronautics Computer & Electronics Sector Construction Sector
- 6. ADVANTAGES OF NANO TECHNOLOGY Increased durability & Functionality Increased precision Increased productivity Weight reduction Cost & Size reduction
- 7. Safe Design of materials. Sustainable Development in Building Construction. Lighter & stronger structural composites. Better cementitious properties. Better thermal properties. Some More Advantages Are . . .
- 8. NANO TECHNOLOGICAL ENHANCED MATERIALS Cement Steel Glasses Timber Coatings Water treatment Photovoltaic solar cell Nano sand Ceramics Metals Acoustic absorber Pipes
- 9. CARBON NANO TUBES Carbon nano-tube is a form of carbon in cylindrical shape, their name comes from their nano meter diameter.
- 10. 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.
- 11. 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
- 12. 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.
- 13. NANO TECHNOLOGY IN STEEL Nano technology produces high strength steel cables and bars. Increased Safety. less need for monitoring. more efficient materials.
- 14. 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.
- 15. NANO COATED GLASS Tracks sun, wind and rain in order to control the building environment and contribute to sustainability.
- 16. ADVANTAGES OF NANO COATED GLASS Reduces energy bills by 30% or more in cold and hot weather. Self Cleaning. Easy installation. Low maintenance.
- 17. 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.
- 18. 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.
- 19. 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.
- 20. SOME NANO COATED STRUCTURES
- 21. COATED STRUCTURES Suvarnabhumi International Airport in Bangkok, Thailand
- 22. The US General Services Administration (GSA), with Nanotech Coated Glass
- 24. MATERIALS BEFORE COATING Stainless steel prone to brown discoloration
- 25. MATERIALS AFTER COATING Shining & Lustres'
- 26. 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.
- 28. NANO TECHNOLOGY IN WATER TREATMENT Bio Fouling Deactivating Pathogens Kill Microorganisms Nano wires and carbon nano tubes have ability to purifying the water.
- 29. WATER TREATMENT PROCESS High-speed water sterilization device
- 30. NANO-ADDITIVE FIRE RETARDANTS • Polymer nanocomposites filled with clay, CNTs, etc., possess improved flammability resistance. • Reduces heat release by formation of surface cover.
- 31. 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.
- 32. 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 nano technology in construction sector . Thus it provides both safety and economy in construction