Introducing Plazrok


Plazrok™ is a manufactured lightweight aggregate made entirely from the wastestream and in particular a complete mix of wastestream plastic that does not need to be sorted or washed and can be taken straight from landfill or any collection point

This plastic along with other waste components is then processed to create an aggregate replacement for concrete 




  • Concrete made with Plazrok can be manufactured between 10 – 40% lighter than concrete made with traditional stone aggregate. 
  • Concrete made with Plazrok achieves compressive strengths comparable to conventional concrete.
  • Concrete made with Plazrok has potential seismic advantages, as it is able to compress and flex without breaking or cracking to a greater degree than concrete made with traditional stone aggregate.
  • The logistics of transporting and construction are reduced, as the weight of Plazrok is Ľ of traditional stone aggregate, leading to a reduction in transport costs to the construction site, labour and construction time when used.
  • Concrete made with Plazrok aggregate has the environmental benefits of reducing landfill and fixing carbon from the ecosystem.
  • Plazrok™ is a technically viable socially acceptable long term soultion to the waste plastic disposal problem that can be rolled out globally and profitably with benefits for both the environments and concrete industries





Plastic is one of the most useful and important materials in modern society.


 However, concern about the environmental impacts of plastic on the world’s ecosystems are growing.


 The facts . . .

  • 280 million tonnes of plastic is produced globally each year.
  • 220 million tonnes of plastic ends up in landfill
  • 20 million tonnes of plastic ends up in the world’s oceans,
  • the balance is recycled, remains in use or unreported

Global Demand for Construction Aggregates to Exceed 48

Billion Metric Tons in 2016


The huge mass of plastic waste floating in the Caribbean


 Maui's Ark - Plastic in our Oceans 

a vimeo presentation by Stephen Harris