Different between pre tensioning and post tensioning concrete Structure

image_pdfimage_print

Different between pre-tensioning and post-tensioning members

These methods are used under the pre-stressing process which has few edges over the orthodox non-stressed structures like greater span to depth ratio, higher moment, and shear capacity. These methods are generally adopted in the making of PSC girders, sleepers, etc.

S.NPre-tensioningpost-tensioning
1In this method, the concrete is prestressed with tendons before it is placing in position.In this method prestressing is done after the concrete attains sufficient strength.
2This method is developed due to the bonding between the concrete and steel tendons.This method is developed due to bearing.
3Pre-tensioning is preferred when the structure element is small and easy to transport.Post-tensioning is preferred when the structure element is heavy.
4In this method, similar prestressed members are prepared.In this method, products are changed according to the structure.
5Prestressed members are produced in mould and then transported.Cables are used in place of wire and jacks are used for stretching.
6Its size is limited.Its size is not limited.
7It is cheaper to construct.It is costlier.
8It is more durable.It depends on their construction mechanism.
9In this process, Members are tensioned at first and then cast.In this process, Members are cast first and then tensioned.
10Culverts, girders are constructed.Long bridge, buildings with long-span beam are constructed.

1) Concept, Place

Different between pre tensioning and post tensioning  of concrete Structure

2) Size, Members, Suitability

3) Durability, Loss in Prestress, Cost

Different between pre tensioning and post tensioning  of concrete Structure

4) Size

Different between pre tensioning and post tensioning  of concrete Structure

I hope this article on “Different between pre tensioning and post tensioning of concrete Structure” remains helpful for you.

Happy Learning – Civil Concept

Contributed by,

Civil Engineer – Ranjeet Sahani

Read Also,

How to Calculate the Modulus of elasticity of concrete?

Effect of water cement ratio and Aggregate Size on Strength of Concrete

Concrete cube test Procedure | Strength of Concrete at with Passing Time

Any Confusion? Comment here !!!

error: Content is protected !!