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Prestress Concrete – Unbonded Post-Tensioning

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An animation movie which illustrates almost all the activities related to mono strand unbonded post tensioning system. An installation, stressing and post construction activities such as making a cutout in the existing post tensioned floor.

source: wikipedia / image: ptsindia

Prestressed concrete is a form of concrete used in construction which is “pre-stressed” by being placed under compression prior to supporting any loads beyond its own dead weight.This compression is produced by the tensioning of high-strength “tendons” located within or adjacent to the concrete volume, and is done to improve the performance of the concrete in service.

Tendons may consist of single wires, multi-wire strands or threaded bars, and are most commonly made from high-tensile steels, carbon fiber or aramid fiber.The essence of prestressed concrete is that once the initial compression has been applied, the resulting material has the characteristics of high-strength concrete when subject to any subsequent compression forces, and of ductile high-strength steel when subject to tension forces.

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This can result in improved structural capacity and/or serviceability compared to conventionally reinforced concrete in many situations.Typical applications include high-rise buildings, residential slabs, foundation systems, bridge and dam structures, silos and tanks, industrial pavements and nuclear containment structures.

VIAptsindi
SOURCEwikipedia
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