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E waste ppt

PCB E-waste used in concrete

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E waste ppt

  1. 1. E-Waste USED IN CONCRETE Raffic ahamed .M Naveen .T.R
  2. 2. What Is It? • Rapid growth of technology, up gradation of technical innovations, and electronics industry have led to one of the fastest growing waste streams in the world . Electronic waste such as: • Refrigerator, Washing machines, Computers and Printers, Televisions, Mobiles, Ipods etc.
  3. 3. COMPOSITION OF E-WASTE • Ferrous & Non-ferrous Metals Plastics, Glass, Wood etc. • Iron & Steel - 50% • Plastics - 21% • Non-ferrous metal - 13% • Mercury, Arsenic, Lead etc.
  4. 4. E-WASTE GENERATION IN INDIA • There are 10 states that contribute to 70% of the total E- Waste generated in the country. • 65 cities generate more than 60% of the total E-Waste in India. • Among the top ten cities generating E-Waste, Mumbai ranks first followed by Delhi, Bengaluru, Chennai, Kolkata, Ahmedabad, Hyderabad, Pune, Surat & Nagpur. • Main source of electronic waste in India are the government, public and private (Industrial) sectors - 70% • Contribution of individual house hold - 15% • Rest being contributed by manufacturers.
  5. 5. PROPERTIES OF COARSE AGGREGATE • Ordinary crushed stone with size 20mm was used as coarse aggregate in concrete mixes. • The essential qualities of a good stone showing very high crushing strength, low absorption value and least porosity. • The water may affect concrete setting time, strength, shrinkage or promote corrosion of reinforcement.
  6. 6. REPLACEMENT OF COARSE AGGREGATE • E-waste was collected locally from a PCB cutting unit in the form of long chips. • Copper strips present at the bottom of PCB were removed manually and broken in to 20mm size.
  7. 7. TEST RESULTS • Specific gravity and water absorption were tested for E-waste. PROPERTIES FINE AGGREGATE COARSE AGGREGATE E - WASTE Specific gravity 2.6 2.74 1.9 Water absorption (%) 1.2 0.05 0.2 Color Dark Dark Dark and ivory shape - Angular Angular
  8. 8. PREPARATION OF THE SPECIMEN • Preparation of concrete specimens aggregates, cement and E-waste are added. • After thorough mixing, water was added and the mixing was continued until a uniform mix was obtained.
  9. 9. COMPARATIVE TEST RESULTS S.NO PROPORTION OF E-WASTE ADDED (%) COMPRESSIVE STRENGTH (N/mm²) SPLIT TENSILE STRENGTH (N/mm²) FLEXURAL STRENGTH(N/mm²) 7days 28days 7days 28days 7days 28days 1. 0% 17.88 28.66 2.11 3.67 2.89 3.84 2. 5% 20.80 31.60 2.65 3.63 4.90 5.07 3. 10% 21.67 33.20 3.10 3.95 5.23 6.00 4. 15% 23.67 35.50 2.85 3.82 5.75 6.38 5. 20% 17.35 25.00 2.65 2.98 4.04 5.09
  10. 10. COMPARSION OF ORDINARY AND PCB CONCRETE Ordinary concrete specimen PCB concrete specimen
  11. 11. CONCLUSION • The addition of E-waste shows increase in compressive strength up to 15% replacement. • Increase in split tensile strength is almost insignificant whereas gain in flexural tensile strength have occurred even up to 15 % replacements. E- waste seems to have a more pronounced effect on the flexural strength than the split tensile strength. • The use of E-waste in concrete is possible to improve its mechanical properties and can be one of the economical ways for their disposal in environment friendly manner.

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