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tack coat

Syllabification: tack coat

Definition of tack coat in English:

noun

(In roadmaking) a thin coating of tar or asphalt applied before a road is paved to form an adhesive bond.
Example sentences
  • Placement on that half of the intersection was completed when a tack coat was sprayed on to seal the moisture in and prepare for the asphalt placement.
  • Paving equipment on wet tack coat may result in tracking, which typically occurs in the wheel paths.
  • If the surface has been stabilized with an asphalt based dust suppressant a tack coat is not required.

Definition of tack coat in:

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Pronunciation: ˌprēˈpōtnt
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