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  1. In method 3 the restoration is done by addition of ____________

    2. A.

     Metal sleeve jacket
    B.

     Aluminium jacket
    C.

     Steel jacket
    D.

     Water proof jacket

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    Answer : Option A

    Explanation :

    Metal sleeve jacket is added in method 3 to do the restoration. In this method preload is applied before the repair of the damaged concrete and removed after the completion of repairs and a metal sleeve jacket is installed around and beyond the damaged area and the gap between the metal sleeve girders is filles with epoxy grout by pressure injection.

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