Green360 Technologies Hits 3,500m³ of Low-Carbon Concrete Across Major Melbourne Builds
Key Takeaways
- MKX has now been incorporated into more than 3,500m³ of concrete — equivalent to 500+ truckloads — across major Melbourne infrastructure projects including the Suburban Rail Loop, Eastern Freeway Extension, and Melbourne Airport taxiway.
- Commercial customers Holcim Australia and Eifers are purchasing MKX at scale, confirming the product has moved beyond trial validation into repeated real-world use by established industry participants.
- G360 has access to up to 30,000 tonnes per annum of calcining capacity at Calix Limited's Bacchus Marsh facility, providing a production platform to support market development ahead of dedicated capital expenditure.
- More than 20 representatives from Victorian Government infrastructure delivery bodies visited G360's Pittong operations in June 2026, signalling growing institutional engagement at the supply-chain planning level.
- The structural decline of fly ash and blast furnace slag supply — as coal power stations close and steel production transitions — positions MKX as a candidate to fill a growing domestic SCM gap rather than simply compete as an alternative product.
MKX surpasses 3,500m³ across Melbourne’s biggest infrastructure projects
Green360 Technologies (ASX: GT3) has announced that its MKX product (Metakaolin X calcined clay) has now been incorporated into more than 3,500m³ of concrete across major Melbourne infrastructure and civil projects, equivalent to more than 500 concrete truckloads.
The milestone spans some of Victoria’s most significant builds, including the Suburban Rail Loop, Eastern Freeway Extension, and metropolitan civil works, with a further pour for taxiway pavement at Melbourne Airport scheduled this week and next. Commercial customers purchasing MKX include Holcim Australia, the company’s first commercial customer, and Eifers. The announcement marks a clear progression from laboratory and trial-scale validation into repeated, real-world use by established industry participants — and reflects G360’s broader market-creation strategy in action.
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What is metakaolin and why does it matter for concrete?
Supplementary cementitious materials (SCMs) are materials blended with Portland cement to improve concrete performance while reducing carbon emissions. They partially replace cement in a concrete mix, cutting the embodied carbon of the finished product. MKX is G360’s commercially produced metakaolin SCM, positioned as an alternative to traditional SCMs such as fly ash and blast furnace slag.
Cement production is one of the world’s largest sources of CO2 emissions, making lower-carbon alternatives like MKX relevant at the intersection of decarbonisation trends and infrastructure supply chain planning. For investors, the product sits where environmental performance and industrial necessity are increasingly converging.
Key product facts at a glance:
- Can replace up to 40% of Portland cement in concrete
- Produced from kaolin sourced at G360’s Pittong operations in Victoria
- Calcined at Calix Limited’s Bacchus Marsh facility, providing access to up to 30,000 tonnes per annum (tpa) of calcining capacity
- Applied across infrastructure and civil construction projects
A structural shift in SCM supply is driving the opportunity
Traditional SCMs — fly ash, a by-product of coal-fired power generation, and blast furnace slag, a by-product of steel manufacturing — are expected to face increasing supply constraints as coal-fired power stations close and steel production transitions to new technologies. This structural change is prompting the concrete and infrastructure sectors to consider alternative SCMs capable of providing reliable, scalable, long-term domestic supply.
The scale of institutional interest is becoming visible. In June 2026, more than 20 representatives from Victorian Government infrastructure delivery bodies visited G360’s Pittong operations to understand the company’s resource, manufacturing capabilities, and plans to establish a scalable domestic MKX supply chain. This was a site visit, not a contracted arrangement, but it signals a growing level of engagement from bodies responsible for delivering major public infrastructure.
Executive Chairman Aaron Banks framed the opportunity in structural terms:
Aaron Banks, Executive Chairman
“…the industry is facing a structural change in the availability of traditional SCMs such as fly ash and blast furnace slag. We believe the opportunity for G360 is therefore considerably larger than simply introducing another cement replacement product…”
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Market-creation strategy: build demand before building capacity
G360’s commercialisation approach is deliberately sequenced. Rather than committing capital to large-scale dedicated production upfront, the company is using the Calix facility’s up to 30,000 tpa calcining capacity as a platform to develop customers, applications, specifications, logistics, and real-world application experience. The intent is to establish repeatable commercial demand and industry confidence before scaling production capacity in response to that market.
This sequencing is designed to progressively de-risk future capital investment. By the time G360 transitions to larger-scale dedicated production, customer demand, product specifications, and supply-chain requirements will have been established through actual commercial use rather than projection.
The growing breadth of applications — spanning rail, road, airport, and civil works — is building the commercial and operational track record required to support broader market adoption.
Aaron Banks, Executive Chairman
“Our strategy has been to create the market before we build large-scale production capacity. That means getting MKX out of the laboratory and into real concrete, real infrastructure projects and the hands of the companies that ultimately need to use these materials at scale.”
The key commercial milestones to date are summarised below:
| Milestone | Detail | Significance |
|---|---|---|
| Volume reached | more than 3,500m³ / 500+ truckloads | Real-world commercial validation at scale |
| Customers | Holcim Australia, Eifers | Established industry participants purchasing commercially |
| Projects | Suburban Rail Loop, Eastern Freeway Extension, Melbourne Airport taxiway | Major public infrastructure across multiple asset classes |
| Production capacity access | Up to 30,000 tpa (Calix, Bacchus Marsh) | Supports market development ahead of dedicated capital expenditure |
| Government engagement | 20+ Victorian Government infrastructure representatives visited Pittong (June 2026) | Institutional awareness building at the supply-chain planning level |
No revenue or contract values have been disclosed in this announcement. The commercial milestone is measured in volume placed and the breadth of projects and customers involved, rather than financial terms.
G360’s strategy centres on the convergence of two developments: the progressive commercial establishment of MKX through real-world use, and the expected structural tightening in traditional SCM availability. The company’s stated objective is to develop MKX from an emerging alternative SCM into a material component of Australia’s future concrete supply chain.
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