콘크리트학회논문집 (Journal of the Korea Concrete Institute)

  • 제27권6호
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  • Pages.669-676
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  • 2015
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  • 1229-5515(pISSN)
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  • 2234-2842(eISSN)
한국콘크리트학회 (Korea Concrete Institute)
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마이크로웨이브 발열거푸집으로 양생된 콘크리트의 압축강도발현 모델

Compressive Strength Development Model for Concrete Cured by Microwave Heating Form

  • 투고 : 2015.06.15
  • 심사 : 2015.09.01
  • 발행 : 2015.12.30
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초록

본 연구에서는 촉진양생기술 중 하나인 마이크로웨이브 발열거푸집으로 양생된 콘크리트의 재령에 따른 압축강도를 예측할 수 있는 모델을 제시하였다. 제시된 모델은 ACI 209R-92에서 제시하고 있는 모델식과 유사하지만 시멘트종류와 양생방법에 따른 계수를 실험과 그 결과의 회귀분석에 근거하여 수정하여 제안하였다. 실험실 규모의 실험체를 타설한 후 마이크로웨이브 발열거푸집으로 촉진양생한 후 실험체로부터 채취된 코어의 압축강도를 측정하였다. 측정강도결과는 표준코어강도와 현장 콘크리트강도로 보정되었으며, 이 자료를 근거로 회귀분석을 수행하였다.

Time dependent model for prediction of compressive strength development of concrete cured by microwave heating form was presented in this study. The presented model is similar to the equation which is given in ACI 209R-92 but the constants which is dependent on cement type and curing method in the presented model are modified by the regression analysis of the experimental data. Laboratory scale concrete specimens were cast and cured by the microwave heating form and drilled cores extracted from the specimens were fractured in compression. The measured core strengths are converted to standard core and in-situ strengths. These in-situ strengths are used for the regression.

키워드

참고문헌

  1. Hwang, S, Khatib, R., Lee, H. K., Lee, S., and Khayat, K. H., "Optimization of steam-curing regime for high-strength, self-consolidating concrete for precast, prestressed concrete applications", PCI Journal, 2012, pp.48-62.
  2. Xuequan, W., Jianbgo, D., and Mingshu, T., "Microwave curing technique in concrete manufacture, Cement and Concrete Research, Vol.17, No.2, 1987, pp.205-210. https://doi.org/10.1016/0008-8846(87)90103-7
  3. Koh, T., Hwang, S., Moon, D., Yoo, J., Song, J., and Ko, J., "Early strength development of cured with microwave heating form", Journal of the Korean Society for Railway, Vol.17, No.5, 2014, pp.365-372. https://doi.org/10.7782/JKSR.2014.17.5.365
  4. ACI Committee 209, ACI 209R-92(Reapproved 2008) Prediction of creep, shrinkage, temperature effect in concrete, American Concrete Institute, 1992.
  5. Ministry of Land, Transport and Maritime Affairs, "Specification on Concrete Construction", 2009, p.209.
  6. Viviani, M., Glisic, B., Scrivener, K. L., and Smith, I. F. C., "Equivalency points: Predicting concrete compressive strength evolution in three days", Cement and Concrete Research, Vol.38, 2008, pp.1070-1078. https://doi.org/10.1016/j.cemconres.2008.03.006
  7. KS F 2422:2007, Method of obtaining and testing drilled cores and sewed beams of concrete, KSA.
  8. Bartlett, F. M., and MacGregor, J. G., "Assessment of concrete strength in existing structures", Structural Engineering Report No. 198, University of Alberta, 1994, p.118.
  9. Carino, N. J., and Lew, H. S., "The maturity method: from theory to Application", Proceedings of the 2001 Structures Congress & Exposition, Washington D.C., USA, 2001, p.19
  10. Carino, N. J., Lew, H. S., and Volz, C. K., "Early age temperature effects on concrete strength prediction by maturity method", Journal of American Concrete Institute, Vol.80, No.2, 1983, pp.93-101.

피인용 문헌

  1. Application of Low-Carbon Ecofriendly Microwave Heat Curing Technology to Concrete Structures Using General and Multicomponent Blended Binder vol.31, pp.2, 2019, https://doi.org/10.1061/(ASCE)MT.1943-5533.0002472