List of Contributions

Hi Justin, That's a definitely a good remark. Such remarks can substantially help you understand more and more how things work and how do concretes behave. Back to your question, placing rebars in concrete is not only controlled by actions (e.g. bending moments and shear forces), there's what so-called ...

Thanks all again for the valuable comments. I started to believe that the grouting in post-tensioned strands do not transfer stresses. If we look at the process again, concrete is poured and cured till it reaches the required strength, strands are tensioned and the wedges get sucked in to the anchor ...

Thanks a lot. Quite comprehensive answers. About the post-tensioning from both sides of a slab, I remember a PT practitioner told me generally it's preferable to stress from both ends (two live ends) had the tendon length exceeded 35 meters long. The longer the tendon, the more friction losses take ...

Thank you so much for the valuable comments. I may conclude that: -post-tensioned members basically do transfer stresses by means of wedge actions in end zones, regardless the adoption of bonded or unbonded tendons. -grouting is introduced in bonded tendons as a way of protection only. ...

It's known that for the pre-tensioned members, the tendons are stressed first and soon the concrete is placed which leads to a (what I call) perfect bonding between the tendon and the surrounding concrete. This achieved bonding is the main key to transfer the stresses. In case of post-tensioning, the ...