Green360 Validates Eco-Clay for Shotcrete with 50% Cement Cut in Victoria Trial
Green360 Technologies has successfully demonstrated its Eco-Clay product as a 50% Portland cement replacement in shotcrete applications, opening new avenues in underground and civil infrastructure markets.
- Eco-Clay replaces 50% Portland cement in shotcrete mix
- Trial conducted with Eifers and Complete Shotcrete in Victoria
- Supports increased production at Pittong plant with 60,000 tpa capacity
- Potential commercial trials and supply agreements underway
- Targets underground mining, tunnelling, and civil infrastructure sectors
Shotcrete Trial Cuts Cement Use by Half
Green360 Technologies (ASX:GT3) has taken a significant step in commercialising its low-carbon cement alternative, Eco-Clay, by completing a successful shotcrete trial with Victorian concrete supplier Eifers and applicator Complete Shotcrete. The trial incorporated Eco-Clay into a shotcrete mix that slashed Portland cement content by 50% while maintaining workability and performance on par with industry standards.
Shotcrete, a sprayed concrete used in complex, rapid placement scenarios such as tunnelling and underground construction, demands precise material performance. Green360’s demonstration wall section at Eifers’ plant validated Eco-Clay’s pumpability, nozzle performance, rebound, and surface finish, critical factors for adoption in this specialised market.
New Market Channels and Production Upside
Eco-Clay’s successful integration into shotcrete opens a fresh market opportunity beyond traditional concrete applications, targeting underground mining, rail and road tunnels, marine protection, and civil infrastructure projects. This validation supports Green360’s ambition to ramp up utilisation of its Pittong manufacturing facility, which has a nameplate capacity of around 60,000 tonnes per annum but is currently underutilised.
Executive Chairman Aaron Banks highlighted that the trial “demonstrates our ability to integrate Eco-Clay into established concrete processes” and could accelerate commercial scale-up by leveraging shotcrete demand. Green360 now plans to advance to larger-scale field trials and explore supply agreements with Eifers and other shotcrete users, signalling a pathway to broaden Eco-Clay’s commercial footprint.
Strategic Partnerships and Industry Endorsement
Eifers Managing Director Daniel Eifermann emphasised the scarcity of traditional supplementary cementitious materials like fly ash and slag, positioning calcined clay as a practical, lower-carbon alternative. Eifers’ commitment to allocate dedicated resources for Eco-Clay distribution underscores growing industry interest in sustainable concrete solutions.
Green360’s progress builds on its recent commercial production milestones, including a capital-light tolling agreement with Calix and a $4.5 million capital raise to scale Eco-Clay manufacturing, as detailed in earlier updates. The company’s strategy to commercialise Eco-Clay in Victoria during 2026 is gaining traction through these validation steps and partnerships with established industry players capital-light tolling agreement and first commercial Eco-Clay production.
Eco-Clay’s Environmental and Technical Credentials
Eco-Clay is produced by calcining Green360’s own kaolin by-products at approximately 750 degrees Celsius, significantly lower than the 1,450 degrees required for traditional Portland cement. This process transforms industrial waste into a high-reactivity metakaolin material capable of replacing up to 40% of Portland cement in concrete mixes, delivering substantial carbon emission reductions without compromising performance.
The shotcrete trial’s 50% cement replacement rate exceeds typical Eco-Clay usage levels, indicating strong potential for more aggressive carbon footprint reductions in specialised applications. However, the scalability of this performance in commercial projects and the timeline for broader market adoption remain to be seen.
Bottom Line?
Green360’s Eco-Clay shotcrete breakthrough could unlock new industrial markets and boost plant utilisation, but commercial scale-up and contract wins will be the true test.
Questions in the middle?
- How quickly can Green360 convert successful trials into binding supply contracts with shotcrete users?
- Will the Pittong plant capacity be sufficient to meet potential demand across multiple sectors?
- Can Eco-Clay maintain performance and cost competitiveness in large-scale commercial shotcrete projects?
