KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
권호 표지

A Variation of Pore Structure of Concrete and its Relationship with Compressive Strength Cured with Various Temperatures

양생온도와 재령에 따른 콘크리트의 공극구조 특성 변화와 압축강도와의 관계

Lee, Chang-Soo;Lee, Kyu-Dong;Kokubu, Katsuro;Kwak, Do-Yeon
이창수;이규동;국부승랑;곽도연

  • Published : 2004.11.30

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Abstract

A variation of pore structure of concrete matrix was experimented by Mercury Intrusion Porosimetry with experimental parameters of curing temperature and age, and the relation with compressive strength was also examined. The pore structure shifted from large size of pore to medium size of one, however, this variation was stopped at the time that position of peak in pore-size-distribution curves lowered down to about diameter of 50 nm, and only the pore smaller than about diameter of 50nm was varied with increasing the coring age. It was also confirmed that there was not difference on resonance in the function of the relationship with compressive strength and porosity.

수은압입시험을 이용하여 양생온도와 재령에 따른 콘크리트의 미세구조 변화를 측정하였고 공극량과 압축강도의 상관관계를 분석하였다. 공극구조 특성을 나타내는 공극분포곡선에서, 초기에는 피크가 50 nm에 이를 때까지 전체 영역에서 지속적으로 미세화 되었지만, 이후 재령에서는 50 nm이하의 공극만이 감소하였다. 또한 현재까지 제시된 다양한 공극량과 압축강도의 관계식을 바탕으로 실험결과를 고찰한 결과 관계식의 유형에 상관없이 유사한 정확도를 나타냄을 알 수 있었다.

Keywords

References

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