Research Article

XRD-Rietveld Method for Evaluating the Leaching Characteristics of Hardened Cement Paste in Flowing Water

Table 2

Physical properties of silica fume.

Analysis itemSiO2 (%)Na2O (%)K2O (%)R2O (%)Cl- (%)LOI (%)Activity index (%)Specific surface area (m2/kg)Average particle size (μm)

Silica fume93.10.320.460.480.022.9107189540.24