Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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The Effect of Boric Acid on the Hydration of OPC

보통포틀랜드 시멘트의 수화에 미치는 Boric Acid의 영향

  • Lee, Eui-Hak (Department of Inorganic Materials Engineering, Myong-Ji University) ;
  • Song, Young-Jin (Department of Inorganic Materials Engineering, Myong-Ji University) ;
  • Song, Myong-Shin (Department of Inorganic Materials Engineering, Myong-Ji University) ;
  • Lee, Kyung-Hee (Department of Inorganic Materials Engineering, Myong-Ji University)
  • 이의학 (명지대학교 무기재료공학과) ;
  • 송영진 (명지대학교 무기재료공학과) ;
  • 송명신 (명지대학교 무기재료공학과) ;
  • 이경희 (명지대학교 무기재료공학과)
  • Published : 2002.01.01
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Abstract

The influence of $H_3BO_3$ in one of inorganic retarder for the hydration of OPC was investigated. The shape of needdle Ettringite formed in few minitues for a no addition of $H_3BO_3$ but, retarded to form of Ettringite and $Ca(OH)_2$ according to addition of $H_3BO_3$. Hydration was retarded for tranquil of Al ion by to be low of pH.

무기질 지연제인 붕산 첨가시 OPC의 수화지연 특성을 연구하였다. 붕산 무첨가시에는 수화시작 수분안에 침상형의 Ettringite가 활발하게 생성하나 붕산을 첨가함에 따라 Ettringite와 $Ca(OH)_2$의 형성은 지연되었다. 이는 pH의 저하에 따른 Al이온의 안정화로 수화반응이 지연되기 때문이다.

Keywords

References

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