Post-Tensioning & Concrete Repair

VSL Construction Solutions (Pty) Ltd    VSL Post Tensioning

Post-Tensioning Products & Services

Post-Tensioning Products & Services Post-Tensioning Products & Services Post-Tensioning Products & Services Post-Tensioning Products & Services

VSL Construction Solutions (Pty) Ltd uses the world renowned VSL systems and components for its entire post-tensioning, retained earth and heavy lifting works.

With a local team of specialised engineers and experts, combined with readily available international expertise, VSL Construction Solutions carry out complex and innovative engineering projects throughout Africa and the Indian Ocean islands.

Being part of the VSL worldwide network, which has over 50 years’ experience, allows VSL to interact with over 900 engineers worldwide, ensuring that our clients get the most innovative and cost effective engineering solutions available.

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Post-Tensioning and Pre-Stressing of Civil Structures

Other specialised services and products include:

  •  Post-tensioned ground anchors and lateral support
  •  Structural repairs and strengthening
  • Heavy lifting and bridge jacking
  • Incremental bridge construction
  •  Segmental bridge erection
  •  Retained earth
  •  Bridge bearings
  •  Stay cables

Tsala’s professional services comprise and are not limited to:

  •  Design and detailing of all components
  •  Estimating and suggesting alternatives
  •  Supplying materials and/or equipment only
  •  Supplying materials, equipment and training for self-installation
  •  Supply and installing all components, including tensioning and grouting
  •  Documentation for engineer’s approval
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Post-tensioning and pre-stressing of building structures

Tsala RMS Construction Solutions (Pty) Ltd uses VSL systems and components when post-tensioning concrete slabs, beams and other structural elements required in buildings.


Tsala’s professional services comprise and are not limited to:

  •  Design and detailing of all components
  •  Estimating and suggesting alternatives
  •  Supplying materials and/or equipment only
  •  Supplying materials, equipment and training for self-installation
  •  Supply and installing all components, including tensioning and grouting
  •  Supply and fixing of supplementary reinforcing
  •  Tensioning of cables
  •  Grouting of anchor recesses
  •  Documentation for engineer’s approval

Other specialised services and products include:

  •  Lifting of slabs
  •  Structural repairs and strengthening
  •  Post-tensioning of pre-cast elements
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Additional Services

Structural Concrete Repair

  • Concrete repairs using high-strength shrink compensating grouts
  • Pumpable grouting systems
  • Crack injection systems
  • Structural repairs using carbon fibre system

VSL Cable Stays

  • Multiple and parallel tendons
  • Greased strand with tightly extruded plastic sheathing
  • Outer thick-walled plastic stay pipe
  • Factory fabricated anchorages

VSL Soil and Rock Anchors

  • Single or multiple cable anchors for stabilising slopes, excavations and tunnels
  • VSL tensioning system
  • VSL grouting systems

Bearings

  • Fixed Pot Bearings permitting movement in one or any direction
  • Bearings for incrementally launched bridges.

 

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VSL Post-Tensioning

Post-tensioning systems are either bonded or unbonded. The bonded system is used in heavy civil works, such as bridges, reservoirs, silos etc. and allows a number of strands to be used in one duct or sleeve. The sleeve is then later led with cementitious grout for bonding purposes and corrosion protection.

The unbonded system is generally used in the slab and beam elements of reinforced concrete building structures. This system makes use of single strands contained in plastic sheaths, which are cast into the concrete and then tensioned once the concrete has reached succinct strength.

Both systems allow structures to have greater spans as well as reduce propping time whilst the concrete is attaining its full strength. These advantages result in significant cost and time savings. The post-tensioning principle is also applicable to stay cables, external cables and ground anchors using strand or bar systems.

VSL Construction Solutions can be contracted to carry out one or a combination of the following:

  • supply of materials only
  • supply of materials, equipment and training
  • full supply and installation
  • design can either be done in-house or in conjunction with the professional engineer of record

 

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VSL Heavy Lifting

The VSL Heavy Lifting System has been developed so as to provide safe and cost effective solutions for the lifting, lowering and horizontal movement of large and heavy loads. 

The exibility of the system allows it to be applied to all types of structures such as bridge decks, silo roofs, mine headgears, power station turbines, etc.



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VSL Retained Earth

VSL Retained Earth is an advanced and economical soil stabilisation system. The system utilises three components - reinforcing mesh, precast facing panels and back material to create a composite soil reinforcing system.

Project cost savings of up to 50% are regularly realized as well as producing an aesthetically and environmentally pleasing structure.

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