Roles of water film thickness in carbonation of γ-dicalcium silicate-based materials

Abstract

Low carbon material of γ-dicalcium silicate (γ-C2S) was examined, with emphasis on the particle packing and water film thickness. Differences in morphology and reactivity from that of cement particles render the γ-C2S particles have different particle packing behavior and water film. However, no research has been done on this important topic to deepen the understanding of γ-C2S-based materials. To fill this gap, the wet packing density of γ-C2S particles was first measured and the water coating thickness was varied by changing the water to solid ratios. At each water coating thickness, the carbonated γ-C2S samples were characterized by techniques of TGA (thermogravimetric analysis).