Post-tensioning is a construction technique used to reinforce concrete structures, such as bridges, buildings, and parking garages. The technique involves placing high-strength steel strands or cables inside precast concrete or cast-in-place concrete members and then stressing them with hydraulic jacks.
Post-tensioning accessories are components used in the post-tensioning process. Here are some common post-tensioning accessories:
Anchorages: These are used to anchor the post-tensioning cables or strands to the concrete.
Couplers: Couplers are used to connect two or more post-tensioning cables or strands.
Ducts: Ducts are used to house the post-tensioning cables or strands before they are grouted.
Grout: Grout is a cementitious material that is pumped into the ducts to fill the voids around the post-tensioning cables or strands.
Wedges: Wedges are used to lock the post-tensioning cables or strands in place after they have been tensioned.
Stressing equipment: This includes hydraulic jacks, pumps, and gauges used to tension the post-tensioning cables or strands.
Protective sleeves: These are used to protect the post-tensioning cables or strands from corrosion or damage during installation.
These are just a few of the common post-tensioning accessories used in construction. The specific accessories used depend on the design of the structure and the post-tensioning system being used.