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

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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Kanwarjot Singh

Kanwarjot Singh is the founder of Civil Engineering Portal, a leading civil engineering website which has been awarded as the best online publication by CIDC. He did his BE civil from Thapar University, Patiala and has been working on this website with his team of Civil Engineers.

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4 comments on "What is the difference between tie bars and dowel bars in concrete carriageway?"

rajeev srivastava says:

Required size dowel bar nd tie bar.

Brajesh pandey says:

Dowel bars 32 to 38mm dia nd 460mm long

Rajive Goel says:

factor governing the length of dowel bars in rigid pavement

pramod kumar says:

why ms bar placed in expansion joint?

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