Journal of the Architectural Institute of Korea Structure & Construction (대한건축학회논문집:구조계)

Architectural Institute of Korea (대한건축학회)
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An Experimental Study on the Characteristics of Microporous Structure Formation by Curing Condition of Cement and Blast Furnace Slag Composite

시멘트 및 고로슬래그 경화체의 양생환경에 따른 미세 공극구조 형성 특성에 관한 실험적 연구

  • 박철 (쌍용양회공업(주) 기술연구소) ;
  • 정연식 (쌍용양회공업(주) 기술연구소) ;
  • 서치호 (건국대학교 건축학과)
  • Received : 2017.07.10
  • Accepted : 2017.09.20
  • Published : 2017.12.26
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Abstract

When industrial by-products like slag and fly ash are using in concrete with cement, it improves strength and durability against external deterioration factors by densifying the structure through potential hydraulic and pozzolanic reaction. But it has been pointed out that high dependence on the quality variation and the curing condition using a admixure material for concrete. In this study, the characteristics of internal micropore structure according to curing condition were analyzed for pastes and mortar specimens under using blast furnace slag powder. As a result, the variation of compressive strength and the internal microstructure were observed according to curing conditions by binder type. Particularly, using blast furnace slag powder, decrease in compressive strength were clearly observed in indoor and carbonation curing compared with water curing. The pore structure analysis also clearly observed the decrease of the gel pore existing in the CSH hydrate layer and the increase of the capillary pore in indoor and carbonation curing compared with water curing condition.

Keywords

References

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