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GATE Exam Questions

Q1:

An important purpose of prime coats is to:

A promote the bond between the base and the wearing courses

B promote the adhesion between an existing wearing surface and a subsequent wearing surface

C promote the bond between the sub-base cause and the sub-grade

D increase the stability of the sub-grade

ANS:B - promote the adhesion between an existing wearing surface and a subsequent wearing surface

No it's wrong.

Prime coats give adhesion between wmm or wbm means base coat and dbm or bc means wearing coat.

Tack coat use as adhesion between existing wearing to subsequent wearing coat than option A is right.



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