Australasian Pozzolan Association (APozA) member Zeotech Limited is continuing to advance the development of AusPozz™, a high-reactivity metakaolin designed to support the production of lower-carbon concrete while delivering improvements in strength, durability and long-term performance.

Produced from high-purity kaolin sourced from the company's wholly owned Toondoon Kaolin Project in Queensland, AusPozz™ is a manufactured pozzolan developed as an alternative supplementary cementitious material (SCM). With a kaolinite content exceeding 90% and low impurity levels, the resource provides a foundation for producing a high-performance material capable of reducing reliance on traditional Portland cement.

Independent testing undertaken by concrete specialists and NATA-accredited laboratories has demonstrated the potential for AusPozz™ to replace up to 40% of General Purpose (GP) and Limestone (GL) cement in selected concrete applications. Testing has also identified improvements in compressive strength, reduced drying shrinkage, lower chloride permeability and enhanced resistance to sulphate attack and alkali-silica reaction.

The material has also undergone independent evaluation against the requirements of AS 3582.4:2022 for manufactured pozzolans, supporting its potential application across a range of concrete and infrastructure projects.

Throughout 2026, Zeotech has continued progressing AusPozz™ , building on successful concrete trials and industry collaborations. A significant development has been the commencement of a commercial-scale production trial involving approximately 800 tonnes of kaolin feedstock from Toondoon, with the resulting material intended to support further customer validation and performance testing.

These developments reflect the growing role of manufactured pozzolans in Australia's transition towards lower-carbon construction materials. As the industry seeks to diversify its supply of SCMs and reduce its reliance on traditional cementitious materials, locally sourced alternatives such as metakaolin are attracting increasing attention for their technical performance and environmental benefits.

As a member of the Australasian Pozzolan Association, Zeotech's ongoing work contributes to broader industry efforts to promote the development, understanding and adoption of pozzolanic materials across Australia. Its progress with AusPozz™ highlights the opportunities for Australian innovation and domestic manufacturing to support more sustainable concrete production and infrastructure development.

Source: Zeotech Limited – AusPozz™ High-Performance Metakaolin

For more information, visit https://zeotech.com.au/auspozztm-metakaolin/