The hydration of C4AF having various surface areas was investigated with Na2Si2O5 solution. The hydration behavior of C4AF depended on the amount of silicate ions precipitated on its surface. The amount of precipitated silicate ions, which hindered the hydration of C4AF, was proportional to the surface area of C4AF. The precipitated silicate ions on the surface of C4AF were founded to be a silica-like material by means of X-ray photoelectron spectroscopy (XPS). They formed a layer approximately 3 nm thick on the surface of C4AF.
|Zairyo/Journal of the Society of Materials Science, Japan
|Published - 2002
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