Computers and Concrete

  • 제16권3호
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  • Pages.487-502
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  • 2015
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  • 1598-8198(pISSN)
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  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Expansion behavior of concrete containing different steel slag aggregate sizes under heat curing

  • Shu, Chun-Ya (Department of Civil Engineering, National Kaohsiung University of Applied Sciences) ;
  • Kuo, Wen-Ten (Department of Civil Engineering, National Kaohsiung University of Applied Sciences)
  • 투고 : 2015.07.22
  • 심사 : 2015.09.01
  • 발행 : 2015.09.25
⟨ 이전 논문 다음 논문 ⟩

초록

This study investigated particle expansion in basic oxygen furnace slag (BOF) and desulfurization slag (DSS) after heat curing by using the volume method. Concrete hydration was accelerated by heat curing. The compressive strength, ultrasonic pulse velocity, and resistivity of the concrete were analyzed. Maximum expansion occurred in the BOF and DSS samples containing 0.30-0.60 mm and 0.60-1.18 mm particles, respectively. Deterioration was more severe in the BOF samples. In the slag aggregates for the complete replacement of fine aggregate, severe fractures occurred in both the BOF and DSS samples. Scanning electron microscopy revealed excess CH after curing, which caused peripheral hydration products to become extruded, resulting in fracture.

키워드

과제정보

연구 과제 주관 기관 : Ministry of Science and Technology of Taiwan

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피인용 문헌

  1. Analytical model of expansion for electric arc furnace oxidizing slag-containing concrete vol.18, pp.5, 2016, https://doi.org/10.12989/cac.2016.18.5.937
  2. Time-Dependent Strength Behavior, Expansion, Microstructural Properties, and Environmental Impact of Basic Oxygen Furnace Slag-Treated Marine-Dredged Clay in South Korea vol.13, pp.9, 2021, https://doi.org/10.3390/su13095026