Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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The Effects of Na$_2$SO$_4$ on the Hydration of Fly ash Blended Cement

플라이애쉬 혼합시멘트에 미치는 Na$_2$SO$_4$의 영향

  • 정석재 (연세대학교 세라믹공학과) ;
  • 방완근 (연세대학교 세라믹공학과) ;
  • 김창은 (연세대학교 세라믹공학과)
  • Published : 1998.11.01
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Abstract

In order to prohibit the delay of early stage hydration activator Na2SO4 was added to Fly Ash blended ce-ment and its effects were investigated. Various measurements such as Compressive strength Heat of hy-dration Pore size distribution Hydration products Microstructure were evaluated and the results show that specimens of Fly Ash(50wt%) with 5% Na2SO4 dramatically improved the compressive strength because pozzolanic reaction of Fly Ash and the formation of ettringite make th microstructure denser than OPC and flyash cement paste.

Keywords

References

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