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Who said that we have to use petroleum? You can pave roads with cement or even old tires (as a base layer and part of the aggregate).
by quotemstr 9y ago
Who said that we have to use petroleum? You can pave roads with cement or even old tires (as a base layer and part of the aggregate).
- maxerickson 9y agoBuilding roads using concrete made with Portland cement is more expensive than asphalt.
- quotemstr 9y agoBut cement roads last longer and can handle heavier loads.
- etcet 9y agoBut asphalt is more easily repaired and can be recycled...
- maxerickson 9y agoBoth are recycled. This is an early search result for concrete recycling: https://www.fhwa.dot.gov/publications/research/infrastructure/structures/97148/rcc2.cfm https://www.fhwa.dot.gov/publications/research/infrastructur...