Why is it so expensive and is there an alternative out there that won’t break so easily especially in the winter? My state is spending like a billion dollars a year on roads that they’ll probably have to fix in 5 years, it really seems like a huge waste of money.
Good Public transportation would fix a lot of these costs I know but what other road materials/solutions are out there?
Thank you for the answers and for putting up with my follow up questions. I’m learning a lot!
Specifically talking about asphalt vs. concrete:
Asphalt is relatively cheap vs. concrete. This is partly because asphalt is a whole lot easier to recycle than concrete, which is almost un-recyclable, but also because asphalt is a relatively “simple” material - it’s mostly petroleum byproducts and gravel.
Concrete doesn’t grip very well, compared to the relatively textured surface of asphalt. Especially when wet! This is why you often see concrete formed with “ridges” or “bumps” cast into it. However…
This also makes concrete noisier and bumpier to drive over, making drivers less happy. It’s why it’s often used for short, low-speed uses like driveways, parking lots, or side streets.
Just about the only thing concrete has going for it is it’s endurance, which it definitely wins handily.
Every few years another engineered road solution is conceived - I’ve seen variations that would use glass which could be ‘re-fused’, concepts for recycling plastic waste, and many more. Most of these run into the issue that they’re either less ‘grippy’, or that they simply cost more even accounting for the longer lifespan.
Thanks, I had no idea asphalt was a byproduct of petroleum. Is concrete just rocks?
Not technical definitions:
Asphalt is for roads is small rocks held together by petroleum byproducts.
Concrete is small rocks held together by cement.