Durability analysis of alkali-activated steel slag-GGBS-coal gangue composite mixtures (opens in new tab)

This study developed a low-carbon pavement base material utilizing steel slag, GGBS, and coal gangue activated by sodium silicate. The mixture proportions were optimized using the uniform design method, and the mechanical properties and durability were systematically evaluated. The results indicate that the system achieves optimal performance when the mass percentages of coal gangue, steel slag, GGBS, and sodium silicate are 52.6%, 36.8%, 6.3%, and 4.3%, respectively. Microscopic analysis (XR...