Quote:
Originally Posted by greg737
In British English, the word 'asphalt' is used to refer to a mixture of mineral aggregate and asphalt/bitumen (also called tarmac in common parlance)
You can use a wide variety of mineral types as aggregate for making an asphalt (tarmac) mixture.
A while back the governments of some islands in the pacific decided to use crushed-up coral as the aggregate. You can still find some of these roads today, like in the quieter parts of Guam. As these coral-aggregate roads weathered and wore under usage (traffic) the exposed bits of coral became polished (like little pieces of jewelry) and you wouldn't believe how slick these roads are, especially when it rains.
On Andersen AFB at the north end of Guam there are old, worn coral-aggregate roads that are hard to walk or run on when they're wet.
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Woah. I had no idea this was a thing. Is it possible to visually discern coral-tarmac from non-coral-tarmac?