Development of Commercial Applications of Fly Ash and Slag-Based Geopolymer Concrete

OBJECTIVES

Develop market-ready geopolymer products using fly ash and slag

Create and test a pilot-scale manufacturing process

Explore market demand and improve product performance

Assess the environmental and social impacts of these products

Team

Hao Wang

Lead Researcher

Partners

University of Southern Queensland (UniSQ)

Halok Pty Ltd

Progress

SUMMARY

This project, led by the University of Southern Queensland (USQ) in partnership with Halok Pty Ltd, focuses on developing commercially viable geopolymer concrete products using waste fly ash and slag—an important step toward circular economy outcomes. The primary engineering outcome is the creation of geopolymer precast panels suitable for use as lightweight cladding. Initial trials have also explored additional products such as roof tiles and garden pots, which are lighter and more sustainable than traditional concrete equivalents. The project is now working on optimising production methods and establishing a scalable pilot facility to bring these products closer to market.

OPPORTUNITIES

Advancement of research into sustainable construction materials using industrial by-products

Industry collaboration to fast-track research translation into market-ready solutions

Real-world impact – development of scalable and cost-effective manufacturing methods for geopolymer products

AS SEEN AT

The 3rd Conference on Low-carbon Construction Materials and Solid Waste Utilization, Dec 2024, Zhuhai, China

RMIT TREMS Industry Event – presentation by Mr Andrew Reid, Halok Pty Ltd

AS SEEN IN

Case Studies in Construction Materials Journal Vol. 22, July 2025 Sustainable mortar with waste glass fine aggregates and pond ash as an alkali-silica reaction suppressor