Journal of the Korean Society for Advanced Composite Structures (복합신소재구조학회 논문집)

Korean Society for Advanced Composite Structures (한국복합신소재구조학회)
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Investigation of Mix Design Method in Concrete Mixed with SSPCM Based on Mechanical Behaviors

SSPCM 혼입 콘크리트의 역학적 성능 기반 배합설계기법 연구

  • Min, Hae-Won (Department of Architectural Engineering, Ewha Womans University) ;
  • Kim, Hee-Sun (Department of Architectural Engineering, Ewha Womans University)
  • 민해원 (이화여자대학교 건축공학과) ;
  • 김희선 (이화여자대학교 건축공학과)
  • Received : 2015.01.30
  • Accepted : 2015.03.15
  • Published : 2015.06.30
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Abstract

As energy consumption of building and the reduction of carbon dioxide emissions have been emphasized, phase change materials(PCM) have been introduced as building materials due to its high heat storage performance. Using shape-stabilizing technique, octadecane/xGnP shape-stabilized PCM(SSPCM) can prevent leakage and improve heat storage performance. The objectives of this study are to propose mix design method of concrete mixed with SSPCM and to evaluate mechanical behaviors of the concrete mixed with SSPCM manufactured according to the proposed mix design. Based on the previously reported material test result, the existing mix design of plain concrete(Concrete standard specification, 2009) is modified to consider reduction of strength in concrete due to the addition of SSPCM. To verify the proposed mix design, specimens are fabricated according to the proposed mix design and axial strength tests and three-point loading tests are performed. Test results show that compressive strengths of the tested specimens reach the designed strength even when two different mix ratios of SSPCM are used. From three-point loading tests, flexural stresses decrease as mix ratio of SSPCM increases.

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References

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