Fly ash consists primarily of glass spheres, both solid and hollow, 1 to 100 microns in size. The smaller particles are the most reactive pozzolans. Micrograph source: Holnam, Inc.
Fly ash consists primarily of glass spheres, both solid and hollow, 1 to 100 microns in size. The smaller particles are the most reactive pozzolans. Micrograph source: Holnam, Inc.