Increase protection against corrosion and provide a non-conductive environment for corrosion. Allow a bond free movement of the strand inside the sheathing. The article gives guid ance One remedy involves modifying the ACI tolerance for short tendons from a percentage (±7%) to a finite length, such as ±1/4 in. Provide corrosion protection to the strand The other involves retaining the same ±7% A ps: Area of prestressing steel f ps: Stress in prestressed reinforcement at nominal strength f pu: Specified tensile strength of prestressing steel f py: Specified yielding strength of prestressing steel (* f pu = *1,M pa = 1,M pa) f pi: Initial prestress stress of prestressing steel f pe: Effective prestress stress of prestressing steel (* f pu = Otte InternationalFunction of the PT coating. The article describes some of the commonly used techniques and precautions for detensioning tendons, repairs and re-stressing of tendons. Reduce friction between the strand and sheathing. Function of the sheathing.
Increase protection against corrosion and provide a non-conductive environment for corrosion. Allow a bond free movement of the strand inside the sheathing. The article gives guid ance One remedy involves modifying the ACI tolerance for short tendons from a percentage (±7%) to a finite length, such as ±1/4 in. Provide corrosion protection to the strand The other involves retaining the same ±7% A ps: Area of prestressing steel f ps: Stress in prestressed reinforcement at nominal strength f pu: Specified tensile strength of prestressing steel f py: Specified yielding strength of prestressing steel (* f pu = *1,M pa = 1,M pa) f pi: Initial prestress stress of prestressing steel f pe: Effective prestress stress of prestressing steel (* f pu = Otte InternationalFunction of the PT coating. The article describes some of the commonly used techniques and precautions for detensioning tendons, repairs and re-stressing of tendons. Reduce friction between the strand and sheathing. Function of the sheathing.
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