KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
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Evaluation of Filling Performance of Steel Concrete Panel (SCP) Mock-up Member with Low-binder based High-fluidity Concrete

저분체 기반 고유동 콘크리트의 Steel Concrete Panel Mock-up 부재 충전 성능 평가

  • Park, Gi Joon (Korea Institute of Civil Engineering and Building Technology) ;
  • Park, Jung Jun (Korea Institute of Civil Engineering and Building Technology) ;
  • Kim, Sung Wook (Korea Institute of Civil Engineering and Building Technology)
  • Received : 2018.11.19
  • Accepted : 2019.06.21
  • Published : 2019.08.01
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Abstract

Recently, precast type SCP modules are being used instead of PSC structures in order to reduce the construction period and costs of special structures such as nuclear power plants and LNG storage tanks. The inside of the SCP module is connected with a stud for the integral behavior of the steel and concrete, and the use of high fluidity concrete is required. High fluidity concrete generally has a high content of binder, which leads to an increase in hydration heat and shrinkage, and a problem of non-uniform strength development. Therefore, in this study, fluidity and passing performance of high fluidity concrete according to material properties are investigated to select optimum mix design of low binder based high fluidity concrete. Mechanical properties of high fluidity concrete before and after pumping are examined using pump car. The filling performance of SCP mock-up members was evaluated by using high fluidity concrete finally.

최근 원자력발전소 및 LNG 저장탱크 등 특수구조물의 공사 기간과 비용 절감을 목적으로 PSC 구조물 대신 프리캐스트 형식의 SCP 모듈의 사용이 증가하고 있다. SCP 모듈 내부는 강재와 콘크리트의 일체 거동을 위해 스터드로 연결되어 있어 고유동 콘크리트의 사용이 요구된다. 고유동 콘크리트는 일반적으로 많은 단위결합재량를 가지기 때문에 수화열 및 수축의 증대, 비경제적인 강도 발현 문제 등이 발생한다. 따라서 본 연구에서는 저분체 기반 고유동 콘크리트 최적 배합을 선정하기 위해 재료적 특성에 따른 고유동 콘크리트의 유동성 및 철근의 간극 통과성능을 검토하고, 펌프카를 활용하여 펌핑 전후에 따른 콘크리트의 물성을 검토하며, 최종적으로 강재와 강재 사이를 콘크리트로 채우는 SCP Mock-up 부재에 대하여 고유동 콘크리트의 충전 성능을 평가하였다.

Keywords

References

  1. BS EN 12390-3 (2009). Testing hardened concrete-Part 3: Compressive strength of test specimens, Technical standard, British Standards Institution, England.
  2. BS EN 12350-8 (2010). Testing fresh concrete-Part 8: Selfcompacting concrete-Slump-flow test, Technical standard, British Standards Institution, England.
  3. BS EN 12350-10 (2010). Testing fresh concrete-Part 10: Selfcompacting concrete-L box test, Technical standard, British Standards Institution, England.
  4. BS EN 12350-12 (2010). Testing fresh concrete-Part 12: Selfcompacting concrete-J ring test, Technical standard, British Standards Institution, England.
  5. Jang, K. P. and Kwon, S. H. (2015). "Evaluation on pumpability of concrete considering variation of rheological property for before and after pumping." Proc. of the KCI Conf., KCI, pp. 353-354.
  6. JSCE Concrete Committee (1999). Recommendation for Self-Compactiong Concrete, Report, JSCE Concrete Committee, Japan.
  7. Kim, H. R., Cho, H. K., Kim, J. C. and Lee, K. C. (2014). "Prediction of pumping friction resistance coefficient in pipe influenced by concrete rheology properties." Journal of the Korea Institute of Building Construction, Vol. 14, No. 2, pp. 118-126. https://doi.org/10.5345/JKIBC.2014.14.2.118
  8. Kim, J. H., Ji, N. Y. and Kim, H. J. (1998). "A comparative study on the composition of using materials through refering to the high fluidity concrete of Korea and Japan." Journal of the Architectural Institute of Korea Structure & Construction, Vol. 14, No. 12, pp. 111-118.
  9. Kim, J. H., Lee, H. W., Lee, J. B., Kwak, S. S. and Noh, S. H. (2008). Development of SC structure and modularization technique for nuclear power plant, Technical Report, S05NJ08-C2008-00, Korea Hydro & Nuclear Power Co., Ltd.
  10. Kim, J. R., Lee, W. H. and Kwak, H. G. (2017). "Determination of efficient shear stud spacing in Steel-Concrete Panel (SCP) considering local buckling behavior." Journal of the Computational Structural Engineering Institute of Korea, Vol. 30, No. 6, pp. 479-484. https://doi.org/10.7734/COSEIK.2017.30.6.479
  11. Park, G. J., Kim, S. W., Park, J. J. and Lee, D. G. (2017a). "Evaluation of optimum mix proportion and filling performance of highfluidity concrete for SCP module charging." Journal of the Korea Academia-Industrial cooperation Society, Vol. 18, No. 3, pp. 452-459.
  12. Park, G. J., Park, J. J., Kim, S. W., Lee, J. H. and Han, H. S. (2017b). "Effect of binder mixing ratio on the properties of high-fluidity concrete with low binders." Proceedings of the Korea Insititute for Structural Maintenance and Inspection, KSMI, Vol. 21, No. 1, pp. 466-467.
  13. Shin, T. Y., Kim, J. H., Shin, D. K. and Hwang, Y. Y. (2016). "Filling ability of steel-plate concete." Proc. of the KCI Conf., KCI, Vol. 28, No. 1, pp. 433-434.
  14. Yim, S. J., Lee, B. S. and Bang, C. J. (2013). "Experimental study of mock-up for modular of high-strength reinforcing bars to the nuclear power plant structures." Journal of Architectural Institute of Korea, Vol. 33, No. 2, pp. 615-616.