Hydration of Granulated Blastfurnace Slag in the Presence of Sodium Silicate

규산나트륨에 의한 고로 수쇄슬래그의 수화반응

  • 송종택 (단국대학교 재료공학과) ;
  • 이용민 (단국대학교 재료공학과)
  • Published : 1994.05.01


The kinetics and mechanism on the hydration of granulated blastfurnace slag-sodium silicate systems were studied by ignition loss, unreacted slag determination, XRD, DTA and SEM(EDS). From this experiment the following results were obtained. The amount of slag reaction was increased with the content of sodium silicate and also C-S-H, C4AH13, and C2ASH8 were formed to be the main products up to 28 days of hydration. Sodium silicate was not only an activator for slag hydration but also a binder in the hydration. The amount of slag reaction activated by sodium silicate was a nearly same for Ca(OH)2 activated slag, but it was smaller one than that activated by NaOH. However there was no difference in hydration products.



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