Why does the city 'repair' streets by covering them in gravel? Abigail Norman asked our ATXplained project to find out. | KUTnathan
Gravel is spread across a street in one method used to extend the life of the road. A KUT listener wanted to know why, so she wrote to us for our ATXplained project.
First, a street sweeper brushed away leaves and pebbles. Workers lined the street, spaced about 75 feet apart and holding giant rakes. A few seconds later, a chip spreader followed, pouring gravel over the asphalt. Picou used his rake to make sure the gravel was spread evenly.After the asphalt emulsion is sprayed on the ground, a chip spreader drops crushed rock along the wide strip of black adhesive.
"In the first application, it will seem like a lot of loose gravel," Spence said."We come back the next day [and sweep it up], depending on how much is still there. We'll come back again maybe in a week. And it all depends. We come back and look at it periodically."
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