Computers and Concrete

  • 제21권6호
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  • Pages.681-695
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  • 2018
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  • 1598-8198(pISSN)
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  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Size effect on strength of Fiber-Reinforced Self-Compacting Concrete (SCC) after exposure to high temperatures

  • Gulsan, M. Eren (Department of Civil Engineering, Gaziantep University) ;
  • Abdulhaleem, Khamees N. (Department of Civil Engineering, Gaziantep University) ;
  • Kurtoglu, Ahmet E. (Department of Civil Engineering, Istanbul Gelisim University) ;
  • Cevik, Abdulkadir (Department of Civil Engineering, Gaziantep University)
  • 투고 : 2017.08.31
  • 심사 : 2018.03.12
  • 발행 : 2018.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

This pioneer study investigates the size effect on the compressive and tensile strengths of fiber-reinforced self-compacting concrete (FR-SCC) with different specimens, before and after exposure to elevated temperatures. 432 self-compacting concrete (SCC) specimens with two concrete grades (50 and 80MPa) and three steel fiber ratios (0%, 0.5% and 1%) were prepared and tested. Moreover, based on the experimental results, new formulations were proposed to predict the residual strengths for different specimens. A parametric study was also carried out to investigate the accuracy of proposed formulations. Residual strength results showed that the cylinder specimen with dimensions of $100{\times}200mm$ was the most affected, while the cube with a size of 100 mm maintained a constant difference with the standard cylinder ($150{\times}300mm$). Temperature effect on the cube specimen (150 mm) was the least in comparison to other specimen sizes and types. In general, provision of steel fibers in SCC mixtures resulted in a reduction in temperature effect on the variance of a conversion factor. Parametric study results confirm that the proposed numerical models are safe to be used for all types of SCC specimens.

키워드

참고문헌

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피인용 문헌

  1. Flexural strength of concrete-galvalume composite beam under elevated temperatures vol.27, pp.1, 2018, https://doi.org/10.12989/cac.2021.27.1.013