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Are there any green alternatives to asphalt in development? (sh.itjust.works)

submitted 1 year ago* (last edited 1 year ago) by [email protected] to c/[email protected]

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Asphalt used on road surfaces are byproducts from fossil fuel. With the ultimate goal of eliminating the use of fossil fuel to combat climate change, are there any good alternatives for road surfaces? I don't think I've ever heard of a viable replacement of asphalt in the works, or even a plan to replace it in any environmental discussions before. At least, not enough for me to notice.

Extented question would be: what are some products derived from fossil fuel that are used in everyday life, but still lack viable alternatives you don't see enough discussions about?

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[–] [email protected] 6 points 1 year ago* (last edited 1 year ago)

Asphalt is a problematic material, but not so much because it’s made from oil. It’s problematic because we burn fossil fuels to harvest the raw crude and to generate the energy needed to refine crude into asphalt. The carbon in the asphalt itself remains sequestered there and doesn’t contribute to the greenhouse effect as long as it isn’t burned later.

Not to mention the lighter fractions will include things like gasoline, and once you have gasoline it's oh-so-tempting to burn it.

Honestly I doubt the emissions just from heating it in a fractionating tower are all that significant themselves, even if they're not using renewables to do it.