Products & Equipments

PRODUCTS

Tendons

  • Post-tensioning strands: Typically 7-wire, high-tensile steel strands of 12.9 diameter.

  • Post-tensioning bars: Solid high-strength bars used in some applications instead of strands.

Ducts or Sheathing

  • Plastic or metal sheathing: Protects the tendons from corrosion and allows free movement during tensioning.

  • Corrugated steel ducts: Common in bonded PT systems (e.g., bridges).

Grout (for bonded systems)

  • Cementitious grout: Used to fill the duct after stressing to bond the tendon to the concrete and protect it from corrosion.

  • Additives: Anti-bleed, shrinkage-compensating admixtures.

Anchorage System

  • Anchor heads (wedges): Hold the stressed strands in place at the ends.

  • Bearing plates: Distribute the force from the anchor into the concrete.

  • Trumpets/cones: Funnel-shaped ducts that guide the tendon into the anchorage zone.

EQUIPMENTS

Grouting Equipment (for bonded systems)

  • Grout mixer: Mixes cement grout.

  • Grout pump: Pumps grout into the ducts under pressure.

  • Grout hoses and couplings.

Stressing Equipment

  • Hydraulic jack: Applies tension to the tendons.

  • Pump unit: Powers the hydraulic jack.

  • Pressure gauge: Monitors tensioning force.

  • Elongation measurement tools: Used to verify post-tensioning elongation.

Cutting and Finishing Tools

  • Strand cutters: Used to trim excess strand after tensioning.

  • Grinders and saws: For finishing concrete around anchorage zones.

Installation Tools

  • Strand pushing machine: Pushes the tendon through the duct (used in large projects).

  • Manual or motorized winches: Help place long tendons in ducts.

  • Tension bars and clamps: Temporary supports or fixes during installation.

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