Bridge Expansion Joints

DSC Zendon cc has equipped ourselves over the years with the ability to manufacture & install all types of Bridge Expansion Joints specified for South Africa and neighbouring countries, which makes us one of the leading Bridge Expansion Joint installers in Southern Africa

Prismo Thorma Joints

With over 1 million linear metres installed in over 50 countries throughout the world, in conditions from arctic to tropical, Thorma joint is engineered for use across all or part of the road deck – including verges and hard shoulders.

DSC Zendon cc has more than 20 years experience in the supply and installation of Thorma Joints and has developed a grade of Thorma which is unique to SA conditions. There is no other bridge expansion joint that can beat Thormajoint for effectiveness, economy and reliability.

A special combination of an elastomer modified BJ200 binder and carefully selected single size BJ stone, provide a strength and flexibility that can accommodate horizontal movements up to +/-40mm.

BSP Steel Joints

BSP 40/65/80mm movement joints have been developed in South Africa. They have an excellent track record, having been proven in very highly trafficked areas of S.A. for the last 15 years. Prior to this DSC Zendon cc installed the Maurer range of joints from 1984.

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Maurer Joints

For decades MAURER Expansion Joints have been a trade mark for expansion joints subjected to traffic.

Quality of the watertight and maintenance-free MAURER Expansion Joints manufactured from company-owned special components sets standards with regard to durability and functionality.

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Key Features:

  • Quick installation and easy repair
No mechanical moving parts
Reduced noise pollution from vehicles travelling over the joint; a smooth riding surface level with existing roadway
  • The ability to be surface dressed, to improve skid resistance

Helps to maintain structural integrity by being watertight

Adaptability of design to fit installation requirements

  • Partial or full installation across carriageways

Flexibility in all directions, including movement of upto +/-40mm

Can be used for top-up after resurfacing work, without full replacement

 

Bridge Jacking

DSC-Zendon C.C.’s services include the supply and execution of bridge propping, jacking and monitoring schemes. Our specialist engineers and site teams provide a total turnkey package for any bridge jacking required, ensuring safe, cost effective solutions to a wide range of requirements.

This includes the following key features:

  • Design of temporary works
  • Design of permanent works
  • Manufacturing of jacking stanchions
  • Supply and installation of bearings
  • Bearing refurbishment
  • Lifting or lowering of bridge decks to the required height
Our service covers equipment supply, testing/calibration, method statements and temporary works. We operate a full fleet of jacking equipment that is ideal for a multitude of bridge jacking or temporary support needs. We can offer innovative solutions for all your heavy lifting and temporary support needs.

Concrete Rehabilitation

We provide essential solutions for all the following aspects of concrete rehabilitation:

  • Bridge Structures & Walkways
  • Carriage Ways
  • Airport Runway
  • All Major Civil Structures

Concrete rehabilitation is as important as any other maintenance activity and must be carried out in a timely manner. Prompt repairs would save extremely expensive repairs that may become necessary at a later stage.

Deterioration of concrete can be broadly categorised into cracking, spalling and corrosion.

There are several causes for concrete deterioration. The main cause can either be carbonation or chloride induced corrosion of steel reinforcements or both.

Approved suppliers of:
  • ABE
  • Sika
  • Stoncor
  • BASF
  • Nukote
Rehabilitation or repair involves the removal of deteriorated, damaged or defective concrete and then carrying out an appropriate repair procedure. Recommended repair procedures for controlling reinforcement corrosion are classified as follows:
  • Patch repair system using an epoxy or cementitious repair mortar
  • Moisture barrier system (protective coating)
  • Coating of steel reinforcement
  • Cathodic protection, chloride extraction and re-alkalisation systems
  • Crack repair (epoxy/chemical/cementitious grout injection)

 

Protective Coatings

Most of the rehabilitation projects on concrete structures requires protective coatings to prolong the life span of these structures. They protect it against major deterioration agents, such as rain, chlorides, and carbon dioxide, as well as improve the aesthetics of the structure.

DSC-Zendon C.C. is an approved applicator for all major suppliers in the chemical industry and specialise in the following structures:

  • Bridges & Walkways
  • Culverts
  • Handrails & Parapets
  • End-blocks

We work in close consultation with our clients to provide protective coating solutions to meet requirements for localised environments and atmospheric conditions, and specifications for adhesion, bonding, maintenance and wear.

With our broad experience along with our professionalism, customer service and quality control, we pride ourselves on delivering superior service in a safe and environmentally responsible manner