Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Effect of Curing Temperature on Geopolymeric Polycondensation of Blast Furnace Slag

고로슬래그의 지오폴리머 축중합반응에 미치는 양생온도의 영향

  • Jeon, Chang-Seob (Department of Advanced Materials Engineering, Kyungnam University) ;
  • Song, Tae-Woong (Department of Advanced Materials Engineering, Kyungnam University)
  • 전창섭 (경남대학교 신소재공학과) ;
  • 송태웅 (경남대학교 신소재공학과)
  • Received : 2011.10.04
  • Accepted : 2011.10.26
  • Published : 2011.11.30
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Abstract

The effect of curing temperature on basic geopolymeric reactivity and hardening behaviour of blast furnace slag were investigated using the mixture of pulverized slag and several alkaline solutions of relatively high concentration. For the pastes prepared at several different temperatures between 20$^{\circ}C$ and 90$^{\circ}C$, setting time and heat of reaction were examined while mineralogical and morphological examinations were performed for the hardened paste after curing period at same temperature. The geopolymeric reaction of slag was revealed to be accelerated strongly according to the curing temperature regardless of the sort and concentration of the alkaline solution. The increase of concentration of the alkaline solution within 9M and the existence of silicic ion in the solution also promoted the reaction severely. The mineral component and their ratio of the hardened paste were revealed to be influenced by the chemical species and silicic ion contained in alkaline solution rather than by the curing temperature. The higher temperature and longer period of curing stage were effective for the sustained formation of geopolymer and succeed improvement of density and uniformity of morphology of the final hardened body.

Keywords

References

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