A prime coat is generally applied to a:
Correct answer: D. Clean granular base before placing a bituminous layer
- A. Steel rail before fixing it to sleepers
- B. Finished asphalt surface to restore skid resistance
- C. Concrete joint to transfer wheel loads
- D. Clean granular base before placing a bituminous layer
Explanation
A prime coat penetrates and binds the surface of an absorbent granular base before the bituminous pavement layer is placed. A tack coat, in contrast, is mainly used to bond existing and new bituminous surfaces.
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About Transportation Engineering
Transportation engineering covers highway planning and alignment, traffic studies, road geometric design, pavement materials and flexible or rigid pavement construction. It also includes railway, airport and traffic engineering concepts such as sight distance, superelevation, signals, capacity and level of service, distinguishing pavement failure from poor geometric design.
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