Crack sealing involves using a liquid asphalt substance to seal cracks between the concrete panels of the roadway. The sealing material is covered with sand or saw-dust to reduce the amount of product from sticking to vehicle wheels. Sealing the cracks reduces the infiltration of water and subsequent roadway damage from freezing and thawing.
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Mill and overlay consists of two major steps: milling the street and laying new asphalt. To mill the street, workers use heavy equipment to remove the surface of the street and place it into dump trucks and returned t...