Roads need sunscreen too: Adding old tires to roads could help them last twice as long
A team of engineers found that adding crumb rubber from old tires can protect roads from damaging UV rays.
Roads suffer through a lot. Heavy trucks roll, spin, and brake on them; rain seeps through; and the sun beats down. As a result, they swell, sink, and crack; then the cracks fill up with snow and ice, which widens them even further. Much of that happens because typical roads are made of rock and salt aggregates, which don’t bond well with asphalt and end up disintegrating under all that pressure. But changing up the recipe can help.
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