Flinders University researchers have made a groundbreaking discovery, by turning mining waste into a tool for sustainable concrete production.
Flinders University college of science and engineering Dr Aliakbar Gholampour said that the applications for a rare earth by-product can be revolutionary in concrete production.
“By examining the microstructural behaviour of DβS-based geopolymers under varying alkaline activator ratios, we’ve gained critical insights into its suitability as a sustainable concrete ingredient,” he said.
“This approach not only enhances mechanical properties and durability of geopolymer concrete but also addresses a growing environmental concern by diverting Delithiated β-spodumene (DβS) from landfill.”
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The researcher’s focus was on DβS, a by-product of lithium defining which features pozzolanic properties. This material can enhance the strength and durability of concrete.
“With lithium refining responsible for generating increased volumes of DβS, the capability to reuse this in construction offers a sustainable solution that will reduce industrial waste, prevent potential soil and groundwater contamination, and support circular economic practices in the mining and building sectors,” Gholampour said.
“These findings not only contribute to reducing environmental impact and resource consumption but also enhance the performance, predictability, and adaptability of next-generation concrete systems.”
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