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What is difference between post tension and pretension concreting works?

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Question ajoutée par Al Ameen Abbas , Quantity Surveyor Engineer , Copri Construction Enterprises Est.
Date de publication: 2017/03/14
Bharath Ebenezer
par Bharath Ebenezer , Jr.Quantity Surveyor , Archimedes India Associates

PRE-TENSIONING

Pre-tensioning is accomplished by stressing wires or strands, called tendons, to predetermined amount by stretching them between two anchorages prior to placing concrete.

POST-TENSIONING

In a post-tensioned beam, the tendons are stressed and each end is anchored to the concrete section after the concrete has been cast and has attained sufficient strength to safely withstand the prestressing force

Mohammad Abu Farha
par Mohammad Abu Farha , Cost Control and Subcontracts Administrator , OHL Industrial and MID Contracting JV

 

In pre-tensioning the stressing wires or tendons are stressed prior to placing concrete as shown below. In post-tensioning the wires or tendons are stressed and each end is anchored to concrete section after has been cast and has attained sufficient strength to safely withstand the pre-stress force

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