post tension hydraulic strand jacks for pretensioned concret

Hydraulic Strand Jacks The strand jack lifting technique originates from the concrete post tensioning principle. A strand jack can be considered a linear winch. In a strand jack, a bundle of steel cables or strands are guided through a hydraulic cylinder; above and below the cylinder are anchor systems with wedges that grip the strand bundle.

Mono-Strand Post Tensioning Jacks Field-Proven Tools for Mono-Strand Tensioning. Durable, field-proven designs, the PTJ and DA models feature "soft-grip" ergonomic handles reducing operator fatigue

Our industrial strength 20 and 30 ton post tension jacks are available in both single and double action models. The concrete stressing jacks are surprisingly lightweight and designed to be used on areas where dirt, high volume use and heat take their toll.

Stressed Jack and Pump for Post Tensioning. ... and Equipment for Post-tensioning And Pre-stressing Construction. ... System, YDC Hydraulic Jack(Multi-strands ...

Hydraulic Tensioning Jacks. Precision-Hayes International manufactures stressing jacks to meet the most rigorous job demands. With proven designs that have become the industry standard, these heavy duty jacks are available in a range of capacities and configurations.

External Post Tensioning to Restore or Increase Capacity; Carbon Fiber Reinforced Polymer (CFRP) Solutions; Circular Structures; Structural and Concrete Repair; Unbonded Post-Tensioning Repair/Replacement; Epoxy Injection; Prestressed Tendon Repair; Heavy Lifting and Specialty Equipment; Inspection Services

Mar 15, 2018 · Published on Mar 15, 2018 Hydropack's Double Acting Multi Strand Jacks with Integral Wedge Lock have capacities up to 650T. They can be used for pre-stressing and post tensioning of tendons in...

Post-tensioned concrete is made by casting concrete that contains ducts through which tendons can be threaded. An alternative is to cast the concrete around tendons that are greased or encased in a plastic sleeve. When the concrete has sufficient strength the tendons are tensioned by means of portable jacks.

Sep 24, 2017 · This video is all about pre-tensioning method of prestressed concrete. (V143) Enjoy! ... PRESTRESSED CONCRETE: Pre-Tensioning ... Comparing pre tensioned and post tensioned concrete ...

Post-Tensioning in Prestressed Concrete. The alternative to pre-tensioning is post-tensioning. In a post-tensioned beam, the tendons are stressed and each end is anchored to the concrete section after the concrete has been cast and has attained sufficient strength to safely withstand the prestressing force as shown in fig.2.

Wide range of standard and custom hydraulic bolt tensioning tools. Achieves even preload on large bolts.