Unveiling the pore architecture of alkali-activated binders using synchrotron X-ray tomography (2026)
Abstract
Sulfidic mine wastes pose long-term environmental risks due to acid and metalliferous drainage (AMD). Engineering these wastes into rock-like environmental geopolymers (EGs) offers a promising pathway for sustainable rehabilitation. While EGs demonstrate mechanical strength and pollutant immobilisation, their long-term performance depends on pore architecture, which remains poorly understood. This project aims to investigate 3D pore structure and connectivity of EGs using high-resolution synchrotron X-ray tomography. By linking microstructural features with mechanical strength, leaching behaviour, and durability under environmental stressors, the outcomes will inform the design of durable, low-cost mine capping systems with environmental and economic benefits for Australia and beyond.
