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The Times of India
The Times of India
World
TOI World Desk

RARE PHOTOS: Fly ash road base performance field data shows 83 stiffness gain cracking still limits durability | Vintage Vibes

It is not always necessary to remove the old pavement and lay new quarry material to rebuild a failing road. The state of Wisconsin experimented with a strategy to recycle the current road and strengthen it using coal fly ash, a byproduct of power generation. In October 2001, the road was repaired utilising full-depth reclamation on County Trunk Highway JK in Waukesha County. Rather than cart off the worn asphalt, they pulverised it, blended it with water and self-cementing fly ash, and pressed it into a fresh road base.

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