By 2030, the UN is hoping that every individual country will be able to eliminate single-use plastic. That end goal is fantastic. However, It doesn’t do much for the tonnes and tonnes of plastic waste sitting in our land fills and city streets at this very moment. An innovative team has come up with an interesting solution. Their idea is use up this plastic waste in the building industry and their ideas are the future of concrete!
Don Thompson, the CEO of The Center of Regenerative Design and Collaboration (CRDC), and his team’s ideas will affect all social groups in South Africa. Costa Rica, a country similar to South Africa in regards to its social needs, has been testing some new CRDC equipment over the last few months. This equipment can process absolutely any plastic and turn it into aggregate for the building industry. Soon, South Africa will be using this machinery for local building projects. The environmentally friendly durable product that CRDC are calling EcoArena PRA (Pre-Conditioned Resin Aggregate) and Ecoblock are the results obtained from using waste plastic as an aggregate. Combining standard cement and sand with their plastic aggregate results in a durable concrete block.
You may recall from my previous article that you can currently purchase varies types of stone and other waste material to use as an aggregate in concrete. Using waste plastic aggregate offers some additional advantages.
Social and Environmental Advantages to EcoArena PRA and Ecoblocks
- Only 21% of the 1.5million tonnes of plastic used in South Africa each year is recycled. Using this waste plastic in our building will help us clean up our environment.
- There will be a lower dependency on other raw materials such as stone from quarries
- Job creation in regards to plastic collection, delivery, shredding, etc.
- Lower carbon emissions from concrete factories
- More schools, hospitals, roads, etc, can be built with these cheaper concrete blocks
- Supports the UN’s sustainable development goals and South Africa’s government initiatives
- Frees up our landfills
- Reduces carbon emissions
- Reduces plastic pollution in rivers, oceans and cities
- No costly sorting of the plastic required. Even sandy and similarly contaminated pieces of plastic can be used.
- Social housing of higher standards can be built
- Healthier cities means healthier inhabitants
Advantages of EcoArenea PRA and Ecoblocks to the Building Industry
- 10% increase in strength
- 8% to 16% decrease in weight
- Increase in thermal properties (An excellent point, I think!)
- No resulting decrease in fire resistance properties
- Lower dependency on other raw materials
- Reduce cement industry’s carbon footprint and carbon tax bill
- It looks and works like standard concrete
Our Thoughts On This Innovation and the Future of Concrete
The development of this product in South Africa interests us very much and we can see how this initiative will affect the future of concrete. We would love to see it available in time for use on the Container House Project. My only question would be in regards to the embedded plastic in these blocks on the demolishing of buildings built with Ecoblocks decades from now. Will we have sufficient technology to remove the plastic from the concrete when necessary?
For More Information
For more information on the product and businesses involved, please see links below.