Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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The Effect of pH on the Ettringite Formation

Ettringite의 생성에 미치는 pH의 영향

  • 이의학 (명지대학교 무기재료공학과) ;
  • 정찬일 (명지대학교 무기재료공학과) ;
  • 송명신 (명지대학교 무기재료공학과) ;
  • 이경희 (명지대학교 무기재료공학과)
  • Published : 2002.07.01
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Abstract

In order to see the effect of pH on the formation of ettringite, pH was controlled with addition of boric acid, hydrochloric acid, nitric acid and potassium hydroxide during the formation of ettringite. The behavior of ettringite formation was discussed with XRD, SEM analysis. The result was that ettringite was unstablely formed with stabilization of aluminate gel and gypsum at below PH 10.

Ettringite의 생성에 미치는 pH의 영향을 알아보기 위하여 ettringite 합성시 boric acid, hydrochloric acid, nitric acid 및 potassium hydroxide를 첨가하여 pH를 변화시켰다. 이때 XRD, SEM 분석을 통해 ettringite의 생성에 미치는 영향성을 검토하였다. 시험결과 pH10 이하에서는 석고와 aluminate gel이 안정화되어 ettringite 생성이 저해됨을 알수있었다

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References

  1. Review of the 42th Genernal Meeting-Technical Session in Tokyo H. F. W. Taylor
  2. Ind. Eng. Chem. v.26 no.8 Hydration of Portland Cement Compounds R. H. Bogue;W. Lerch https://doi.org/10.1021/ie50296a007
  3. Gypsum and Anhydrate of Portland Cement W. C. Hansen;J. S. Offutt
  4. Transaction of the matierial Research Soc. of Jpn. v.25 no.2 Influence of H₃BO₃ on the Hydration of Calcium Sulfoaluminate and Calcium Aluminate K. S. Yoo;H. Fujimori;K. Ioku;S. Goto;K. H. Lee
  5. Report of Central Research Laboratory of Onoda Cement Co., Ltd. Influence of Boric Acid on Hydration of Ultra Rapid Hardening Cement H. Uchikawa;S. Uchida
  6. J. of the Kor. Ceram. Soc. v.35 no.6 Effect of H₃BO₄on the Hydration of C₄A₃S Blended Rapid Harding Cement K. S. Yoo;K. H. Lee;N. H. Kim;Y. S. Lee;K. H. Hur;J. W. Lee;G. Yim
  7. J. Mater. Sci. v.12 A. Paul https://doi.org/10.1007/BF00552247

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