Journal of the Korea institute for structural maintenance and inspection (한국구조물진단유지관리공학회 논문집)

Korea Institute for Structural Maintenance Inspection (한국구조물진단유지관리공학회)
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A Study on Estimation Model of Strength Development of Concrete Using Fly Ash and Ground Granulated Blast-Furnace Slag

플라이애시 및 고로슬래그 미분말을 사용한 콘크리트의 강도 발현 예측 모델식 연구

  • 최연왕 (세명대학교 토목공학과) ;
  • 박만석 (세명대학교 건설공학과) ;
  • 정재권 (한국시설안전공단 특수교 통합유지관리센터) ;
  • 최병걸 (세명대학교 건설공학과) ;
  • 김경환 (세명대학교 건설공학과)
  • Received : 2013.03.26
  • Accepted : 2013.06.10
  • Published : 2013.09.30
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Abstract

Recently, the amount of the mineral admixture including fly ash and ground granulated blast-furnace slag was increased for the purpose of $CO_2$ gas emission reduction in the concrete industry. However, in the case of korea, estimation model of strength development in concrete structural design code was prescribed a constant value according to cement type and curing method about the portland cement. therefore, the properties of strength development according to time of concrete using fly ash and ground granulated blast-furnace slag does not reflected estimation model of strength development. Accordingly, this paper was evaluated strength according to time on the concrete strength range using fly ash and ground granulated blast-furnace Slag and the strength development constant ${\beta}_{sc}$ of concrete according to the kind of the mineral admixture and mixing ratio was proposed.

최근 콘크리트 산업은 $CO_2$ 가스 배출 저감을 목적으로 플라이애시 및 고로슬래그 미분말 등의 혼화재 사용량이 증가되고 있다. 그러나 국내의 경우 구조설계기준에서 사용되고 있는 강도 발현 예측 모델은 시멘트 종류 및 양생방법에 따른 상수값 ${\beta}_{sc}$를 포틀랜드시멘트에 관해서만 규정함에 따라 플라이애시 및 고로슬래그 미분말을 혼합 사용한 콘크리트의 시간에 따른 강도 발현 특성을 반영하지 못하는 실정이다. 따라서 본 논문에서는 플라이애시 및 고로스래그 미분말을 혼합한 보통강도 및 고강도 영역의 콘크리트의 시간에 따른 강도를 평가하였으며, 혼화재 종류 및 혼합률에 따른 콘크리트 강도발현 상수 ${\beta}_{sc}$ 값을 제안하였다.

Keywords

References

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Cited by

  1. The Properties of Strength Development of High Volume Fly Ash Concrete with Reduction of Unit Water Content vol.2, pp.1, 2014, https://doi.org/10.14190/JRCR.2014.2.1.046