PCB E-waste used in concrete

1. E-Waste USED IN
CONCRETE
Raffic ahamed .M
Naveen .T.R

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. 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. 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. 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. 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. 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. 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. 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. COMPARSION OF ORDINARY AND PCB
CONCRETE
Ordinary concrete specimen PCB concrete specimen

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.