Influence of Na2Si2O5 on the Hydration of C4AF with Various Surface Areas

Kwang Suk YOU; Hirotaka FUJIMORI; Koji IOKU; Seishi GOTO

doi:10.2472/jsms.51.6Appendix_64

Influence of Na₂Si₂O₅ on the Hydration of C₄AF with Various Surface Areas

Kwang Suk YOU, Hirotaka FUJIMORI, Koji IOKU, Seishi GOTO

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Keywords: Hydration reaction, Ferrite phase, Sodium silicate, Sodium silicate, Silica layer, Surface area

JOURNAL FREE ACCESS

2002 Volume 51 Issue 6Appendix Pages 64-67

DOI https://doi.org/10.2472/jsms.51.6Appendix_64

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Abstract

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 3nm thick on the surface of C₄AF.

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