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Chen Zheng

on 27 April 2010

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Transcript of Science

Plastic Roads Offer Greener Way to Travel in India
November 14, 2009 The New York Times By Mridu Khullar Summary

Two biggest problem in India:
1) battered roads 2) Overflowing landfills

- KK Plastic Waste Management – Bangalore, India

- Streets made with recycled plastic

- Built more than 1,200 kilometers, or 745 miles of roads using 3,500 tons of plastic waste
How it works How it works? flakes asphalt - Combined at a ratio of 8 tons of plastic/100 tons of asphalt
- For every kilometer of single-lane road, 2 tons of plastic is needed
Polymerized Bitumen

- 35 tons of plastic waste generated by Bangalore each day – 3-5 tons are used daily on the roads

- Jobs created – garbage collectors

- Typically, bitumen is mixed with new plastic – no environmental benefits
In India – use waste plastic including bottles and food packaging

- Increase the usage of roads by at least another year or two

- Increase the ability of bitumen to hold together at higher temperatures

- Plastic is water resistant – no potholes and need less repairs

- Short run: 3 % more than constructing a conventional road

- Long run: repair and repaving expenses are lower
Disadvantages - Stealing businesses from regular maintenance of roads
- Encouragement to use more plastic
- "The focus really has to be on reduction of plastics rather than finding ways to get rid of it"
- Initial cost

- Optimistic Idea: reduce their usage of plastic
- India was not a big user of plastic until 1980s
- Help industries become globally competitive
- Not prepared to handle the increase in plastic waste

- Americans use 2,500,000 plastic bottles every hour! Most of them are thrown away!
- Plastic bags and other plastic garbage thrown into the ocean kill as many as 1,000,000 sea creatures every year!

People Planet India:
- In 2005, after a rain flooded Mumbai, plastic bags clogged the underground drainage system
- Tourists areas has bottled water on beaches endangering the marine life
- 3,000 cows died in 2000 - found plastic bags in their stomach

The U.S.
- In 2008, the United States generated about 13 million tons of plastics - nondegradable
- The amount of plastics generation in MSW has increased from less than 1 percent in 1960 to 12.0 percent in 2008. Profit Mass Pike: Pre-Cap

- Summary
- How it works
- Advantages
- Disadvantages
- People, Planet, Profit Re-Cap

- Streets made with recycled plastic
- Plastic Waste + Asphalt = Polymerized Bitumen
- Advantages & Disadvantages
- People, Planet
- Profit Work Cited

Khullar, Mridu. (2009, November 14). Plastic Roads Offer Greener Way to Travel in India. The New York Times. Retrieved from http://www.nytimes.com/2009/11/14/business/global/14plastic.html
A Recycling Revolution. (2005-2010). The National Recycling Coalition. Retrieved from http://www.recycling-revolution.com/recycling-facts.html
US Department of Transportation. (2009). Construction. Retrieved from http://www.fhwa.dot.gov/programadmin/contracts/price.cfm
US Environmental Protection Agency. (2009, November). Plastics. Retrieved from http://www.epa.gov/wastes/conserve/materials/plastics.htm
NY State Thruway Authority. Retrieved from http://www.nysthruway.gov/index.shtml
Massachusetts Turnpike. Eastern Roads. Retrieved from http://www.bostonroads.com/roads/mass-pike/

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