This paper presents an experimental investigation in order to evaluate fresh and hardened properties of LP (Limestone Powder) blended cement concrete. The cement contents of the mixtures are replaced by LP in the range of 10%, 15%, 25%, and 35%, while a control mixture is prepared with only OPC (Ordinary Portland Cement). The fresh concrete properties like slump and air content are similar to those of control mixture up to 35% of replacement ratio of LP, however a delay in setting time is evaluated. The hardened properties including compressive strength, flexural strength, and rapid freezing and thawing resistance shows similar results of control mixture up to 15% of replacement. Relatively lower strength development is evaluated over 25% replacement of LP. For accelerated carbonation test, resistance to carbonation rapidly decreases with increasing LP replacement ratio due to the limited amount of Ca(OH)2. From the study, LP replacement under 15% can be adopted considering reduction of strength and resistance to carbonation.

1. 서 론
 2. 석회석 혼합 시멘트 콘크리트 실험의 개요
  2.1 석회석 혼합 시멘트 제조
  2.2 사용재료 및 배합
  2.3 굳지 않은 콘크리트 시험
  2.4 굳은 콘크리트 시험
  2.5 촉진 내구성 시험
 3. 석회석 미분말 결합재 콘크리트의 특성 평가
  3.1 굳지 않은 콘크리트 특성 평가
  3.2 굳은 콘크리트 특성 평가
 4. 결 론
 감사의 글
 References

• 방진욱(정회원, 충남대학교 토목공학과 박사후 연구원) | Jin-Wook Bang
• 권성준(정회원, 한남대학교 건설시스템공학과 교수) | Seung-Jun Kwon
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