The TwistBlocks are a fire-safe construction system made from hollow concrete blocks. Thanks to the simple plug-in system, they are flexible in the design of complex floor plans – and can be quickly assembled into buildings without mortar or plaster.

TwistBlock Moulds

The TwistBlocks are a fire-safe construction system made from hollow concrete blocks. Thanks to the simple plug-in system, they are flexible in the design of complex floor plans – and can be quickly assembled into buildings without mortar or plaster.

In cooperation with the non-profit organisation Start Somewhere, PERI developed an easy-to-use formwork system called TwistBlock Moulds. As part of PERI's sustainability strategy, these moulds are made from recycled plastic. This material offers the advantage that it can be used again and again to produce new moulds.

The overall aim of the joint project is to improve housing conditions in the slums in Africa, create jobs for local people and at the same time generate local added value.

VIDEO | TWISTBLOCK MOULDS

The TwistBlock Moulds at a glance

The facts in figures

  

  • Already 4
    existing local factories for the production of TwistBlocks in Africa, and more are being planned
  • At least 10
    jobs are created per manufactory – and thus offer added value for the local people
  • About 12
    TwistBlocks are needed to create one square metre of wall
  • Around 4
    months of construction time are needed for the construction of a multi-storey building with the TwistBlocks

Innovative construction system

A central factor of the new technology is the careful use of resources. The TwistBlock Moulds were therefore designed in such a way that the resulting TwistBlocks are hollow on the inside and also very narrow. This results in thin walls that require a minimum of resources but are nevertheless stable.

  • The hollow concrete blocks are currently produced in local factories in Kenya and South Africa, with further countries already being planned. The moulds are filled with concrete by hand in a simple process.
    Local

    The hollow concrete blocks are currently produced in local factories in Kenya and South Africa, with further countries already being planned. The moulds are filled with concrete by hand in a simple process.

  • The TwistBlocks are flexible in the design of complex floor plans thanks to their simple plug-in system. This is particularly advantageous when space is tight in informal settlements. If required, the blocks of the assembled walls can also be dismantled and up to 80 % reused.
    Flexible

    The TwistBlocks are flexible in the design of complex floor plans thanks to their simple plug-in system. This is particularly advantageous when space is tight in informal settlements.

  • The buildings constructed with TwistBlocks are made of concrete and are therefore fireproof. This is particularly valuable in densely populated areas.
    Fireproof

    The buildings constructed with TwistBlocks are made of concrete and are therefore fireproof. This is particularly valuable in densely populated areas.

  • The TwistBlock Moulds are made from recycled local plastic. If required, the concrete blocks used can also be dismantled using the innovative plug-in system and up to 80 % of them can be reused.
    Sustainable

    The TwistBlock Moulds are made from recycled local plastic. If required, the concrete blocks used can also be dismantled using the innovative plug-in system and up to 80 % of them can be reused.

  • The production of TwistBlocks requires only small quantities of building materials and little time. This keeps construction costs low.
    Cost-effective

    The production of TwistBlocks requires only small quantities of building materials and little time. This keeps construction costs low.

Business Development Manager at PERI.
Business Development Manager at PERI.
Dr. Jürgen Mayer
Business Development Manager | PERI Group
"With the TwistBlock Moulds, PERI has developed a formwork system for slums with which the TwistBlocks of the non-profit organisation Start Somewhere can be produced in the simplest possible way. The hollow concrete blocks represent a fire-safe construction system that can be used to build extremely cost-effectively without plaster or mortar. It is noteworthy that the production of the TwistBlocks with the formwork developed by PERI creates sustainable jobs and thus added value directly in the slums. For this reason, the schools that PERI builds every year in disadvantaged regions as part of its sustainability strategy are also built with TwistBlocks."

Interested?

For more information about our TwistBlock Moulds, please contact us. We look forward to hearing from you!

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