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    Can plastic pavement curb the world's epidemic of plastic waste?

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    MacRebur grinds up hard-to-recycle plastics, and then mixes it with a "secret ingredient" to replace an oil-based component of road pavement - eliminating plastic from landfills while also reducing carbon emissions

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    From CBS News

    Ninety percent of the plastic we use ends up in landfills, or in the world's oceans. Now, a Scottish firm has invented a way to recycle that hard-to-use plastic for a role that requires durability: paving roads and highways.

    The driveway at Christopher Boyle's 17th-century English estate looks like regular asphalt and feels like regular asphalt, but it's not. It's paved with 21st-century plastic trash.

    plastic-roadways-laying-down-road-620.jpg

    "It has all the ecological, environmental benefits, but to your ordinary punter, you don't see any difference at all," Boyle said.

    It used the equivalent of 750,000 plastic bags and bottles ground up along with other hard-to-recycle plastic. The plastic flakes are mixed at a plant in Scotland with what MacRebur co-founder Toby McCartney calls a secret ingredient. It's then bagged up and shipped to asphalt manufacturers.

    That blend replaces some of the black, oil-based bitumen that keeps regular roads together.

    "For every ton of bitumen we replace, we save a ton of carbon emissions," said McCartney, "so for the environment, it's the way forward."

     

    A Scottish firm has created a way to recycle plastic trash into asphalt, replacing some of the oil-based bitumen that holds regular roadways together.  CBS NEWS

    MacRebur, based in Lockerbie, Scotland, is now paving plastic roads across the world — from highways in England to a street in San Diego, where the firm is also opening a new factory.

    CBS News correspondent Roxana Saberi asked, "So, is this a long-term solution to the world's plastic problem?"

    "I believe so!" McCartney replied. "It's the stuff that nobody else can use. It's destined for landfill or for incineration. We can take all of that plastic and we can recycle it in our roads."

    plastic-roadways-ground-up-plastic.jpg MacRebur grinds up hard-to-recycle plastics, and then mixes it with a "secret ingredient" to replace an oil-based component of road pavement - eliminating plastic from landfills while also reducing carbon emissions.   CBS NEWS

    Environmentalists like Libby Peake are cautiously optimistic.

    "They're potentially lower carbon than conventional roads, so that's very positive. What we don't know yet is how much micro-plastics these roads might shed."

    • World health report raises concerns about microplastics in drinking water
    • Piling up: Drowning in a sea of plastic
    • Plastic pollution worsens despite efforts to address the problem

    McCartney said, "There are no microplastics present in any of the roads that go down."

    Saberi asked, "But shouldn't people just stop using plastic?"

    "I don't know whether that's ever really going to happen," McCartney replied.

    He said, for now, plastic pavement can curb the world's plastic epidemic, a sentiment shared by Boyle, who says since he laid down his plastic driveway three years ago, it's held up fine.

    He thinks the reason more people haven't paved roads with plastic is because they aren't aware of the new option.

    plastic-roadways-christopher-boyle-driveway.jpg Christopher Boyle's plastic driveway after three years of wear and tear.

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