What is the post-tensioning construction process?

1. Bonded prestressed concrete? Pour concrete first, wait until the concrete reaches more than 75% of the design strength, and then tension the steel bars (steel tendons). The main tensioning procedures are: buried pipe holes → pouring concrete → drawing pipes → curing and tensioning → anchoring → grouting (to prevent the steel bars from rusting). The force transmission method is to rely on anchors to prevent the elastic rebound of the steel bars, so that the cross-section concrete obtains pre-stressed stress. This approach makes the steel bars and concrete become a whole, which is called bonded prestressed concrete. Bonded prestressed concrete reduces the tensile stress of the prestressed steel bars due to the bonding force (resistance), resulting in a reduction of the compressive stress of the concrete, so efforts should be made to reduce this bonding. This method has simple equipment, does not require a tensioning platform, is flexible in production, and is suitable for on-site construction of large components.? 2. Unbonded prestressed concrete? The main tensioning procedure is to coat the surface of the prestressed steel bars with asphalt and other lubricating anti-corrosion materials along the entire length → wrap them with plastic paper or casing (prestressed steel bars do not establish bonding force with concrete) → pour concrete and maintain → tension the steel bars → anchor.? There was originally an introductory article about prestressed concrete that I wanted to upload to you, but such attachments are not supported, haha, there is no other way. This post was last posted by zcj41000 on 2009-4-18 10:46 Edit ]

The picture above~~~ How can I solve it for you without a picture?

Post-tensioning construction process http://www.scutde.net/t14courses/1412-efmdljiaif/yuyingli/4.3/PIC/BALL1.GIF Please click on the picture below to watch the animation of "Post-tensioning Construction Process". http://www.scutde.net/t14courses/1412-efmdljiaif/yuyingli/4.3/FLASH/%BA%F3%D5%C5%B7%A8.jpg