Method of production

Dry materials/aggregates are batched into a 6m³ Truck Mixer by means of a Karoo Batch plant, the truck mixer actually does the mixing as it drives to the extruder. After verifying that the mix, slump and texture of the concrete is correct, the concrete is discharged into to the mould of the extruder, the operator engages vibrators on the extruder after which forward motion of the extruder causes the concrete to be extruded by a mould onto the surface where it would be finished by a team of trained workers to the specifications of the client.

 

Products

  • Mountable Kerbing
  • Non Mountable Kerbing
  • Semi-mountable Kerbing
  • Kerb & Channel Combination
  • Edge Restraints
  • Side Drains
  • V-Drains 

 

New Products

  • Slot Drains
  • Wire Rope Barriers
  • New Jersey Barriers

 

Method of Operation

Because of the fact that most of the projects we take on are urban developments for private developers, we normally do not tender, we quote. When our quotation is accepted, terms and conditions are agreed upon and an order is placed by the client, the project is programmed to commence on a pre-determined date before which various communications and actions take place between the client and us to assure no delays on both sides.

Our rates are based on expertise, dry plant, and labour.  Materials and diesel are to be supplied by our client, and a schedule of materials required for the project will be handed and explained to the site agent before commencement of the project.

The first establishment is included in our rates unless otherwise stipulated, re-establishments normally bare a re-establishment charge.

Establishment consists of a Karoo batch plant, water systems, 6m³ truck mixer (more if required), loader, extruder machine & moulds, supervisor (site manager)  and labour team. Work can commence 2 hours after arrival on site.

Raw materials (aggregates) are batched into the truck mixer where mixing takes place, the mixed concrete is then dispatched into the extruder machine which in turn extrudes the profile required. A team of ±10 then finish the product to the high standard our company endeavours to supply to our client. The end product will have a broom finish. Joints on smaller products are done when concrete is still workable by means of a slicer, joint intervals vary from profile to profile, *wider profiles are normally cut by means of a diamond cutter the next day. For curing we prefer to cover with plastic sheeting, alternatively an appropriate curing compound is used.

Our site manager oversees quality control, quantity control of materials and placed products, making of cubes for compressive strength tests and liaises with the client or site agent.

 

*On Side channels, an expansion joint is cut (10mm wide) right through the concrete at intervals of 9m, impregnated soft board or equivalent is inserted in the cut and then sealed with an appropriate sealer after 28 days, contraction joints are also cut (5mm wide) 50mm deep at intervals of 3m.