A. Seal coat
B. Tack coat
C. Prime coat
D. Spray of emulsion
Answer: Option B
This Question Belongs to Civil Engineering >> Highway Engineering
Highway facilities are designed for
A. annual average hourly volume
B. annual average daily traffic
C. thirtieth highest hourly volume
D. peak hourly volume of the year
The provision of traffic signals at intersections
A. reduces right angled and rear end collisions
B. increases right angled and rear end collisions
C. reduces right angled collisions but may increase rear end collisions
D. reduces rear end collisions but may increase right angled collisions
In CBR test the value of CBR is calculated at
A. 2.5 mm penetration only
B. 5.0 mm penetration only
C. 7.5 mm penetration only
D. both 2.5 mm and 5.0 mm penetrations
If aggregate impact value is 20 to 30 percent, then it is classified as
A. exceptionally strong
B. strong
C. satisfactory for road surfacing
D. unsuitable for road surfacing
1)Prime coat-Applied on granular/base course before bituminous layer; penetrates and binds the surface.
2)Tack coat-Applied between two bituminous layers to provide adhesion.
3)Seal coat-Applied over a bituminous surface to seal voids and prevent water entry.
4)Spraying of emulsion-Application of bitumen emulsion for priming, tack coat, surface treatment, etc., depending on the work.