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System description
Pre-stressing bars are used for permanent works such as connecting various segments of bridge structures, shear keys for seismic resistance at the connection of segments or girders and piers, and reinforcement of piers that are subject to horizontal pre-stressing forces.
They are also used for temporary works such as anchoring of temporary steel frame supports, lifting bars for segment launching trusses, and stitching bar segments before pre-stressing.
These bars need to have sufficient strength properties to carry the heavy loads of structures and pre-loading to balance the external loads structures are subjected to at a later stage.
Our post-tensioning range features both fully-threaded bars and smooth bars, with a full range of accessories which also covers shear key applications.
The services of a fully dedicated design team are available to provide engineering support to our customers.
Product features
• Diameter range from 28 mm to 100 mm. Larger diameters may be subject to minimum order quantities.
• Steel grades 835/1030; 930/1080 and 1050/1200 N/mm2
• Minimum Elongation › Gr 835/1030 12% › Gr 930/1080 10% › Gr 1050/1200 10%
• Modulus of elasticity 205,000 N/mm²
• Impact strength 50J at 20°C
• Rolled threads (obtained with cold plastic deformation of the metal between two dies)
• Thread profile is ISO metric thread according to ISO 262 -
NFE 03014 and 03053. Larger pitch and trapezoidal threads also available upon request
Xem posttensioning-bars-268.pdf
