Abstract: Fly ash is the byproduct from the combustion of pulverized coal. As a typical solid waste, the resource utilization and mechanical properties are widely interested. A series of testing, such as, X-Ray Fluorescence (XRF) test, activity test, laser particle size test and scanning electron microscope test, were performed to investigate the performance of Class II and III fly ash in Shaoxing from three different aspects including silicon aluminum oxide content, activity index and particle size distributions. The research progress of resource utilization of the fly ash is also reviewed. The results show that the content and activity index of Si-Al oxide in Class II fly ash are higher than those in Class III fly ash, and the grading of Class II is better with a large number of glass beads with smooth surface and irregular melt; Currently, the applications of fly ash are, in soil performance improvement, geopolymer preparation and concrete admixture, ash brick and ceramist products. 

Key words: fly ash, geopolymer, soft soil improvement, heavy metal solidification, resource utilization