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What is the difference between tie bars and dowel bars in concrete carriageway?

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Tie bars are deformed rebars or connectors used for holding faces of rigid slabs in contact to maintain aggregate interlock. Tie bars are not load transferring device. For instance, tie bars are used in longitudinal joints in concrete pavement.

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Dowel bars are smooth round bars which mainly serve as load transfer device across concrete joints. They are placed across transverse joints of concrete pavement to allow movement to take place. Where movement is purposely designed for longitudinal joints, dowel bars can be adopted.

This question is taken from book named – A Self Learning Manual – Mastering Different Fields of Civil Engineering Works (VC-Q-A-Method) by Vincent T. H. CHU.

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Comments
  • rajeev srivastava December 8, 2016 at 3:14 am

    Required size dowel bar nd tie bar.

  • Brajesh pandey May 15, 2017 at 2:46 am

    Dowel bars 32 to 38mm dia nd 460mm long

  • Rajive Goel March 13, 2018 at 6:28 am

    factor governing the length of dowel bars in rigid pavement

  • pramod kumar January 14, 2019 at 7:27 pm

    why ms bar placed in expansion joint?

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