Freeze–Thaw Resistance of Ternary Blended Concrete Using Ferronickel Slag
- Title
- Freeze–Thaw Resistance of Ternary Blended Concrete Using Ferronickel Slag
- Author
- 조원정
- Keywords
- ferronickel slag; blast furnace slag; freeze–thaw; mineral admixtures; ternary blended
- Issue Date
- 2021-01
- Publisher
- SPRINGER
- Citation
- INTERNATIONAL JOURNAL OF CONCRETE STRUCTURES AND MATERIALS, v. 15, NO 7, Page. 1-11
- Abstract
- The present study investigated the resistance of concrete blended with ground granulated blast furnace slag (GGBS)
and ferronickel slag (FNS) to cycles of freeze and thaw. The replacement ratio of the binders was 0%, 50 wt% of GGBS
and 30 wt% of GGBS+20 wt% of FNS for O100, OG50 and OG30F20, respectively. Specimens consisted of cement
paste and concrete kept at 0.45 water/binder ratio. After 28 days of curing, specimens were subjected to freeze and
thaw cycles (300) for measuring the variation of strength, weight loss and fundamental transverse frequency. Simultaneously mercury intrusion porosimetry was performed to examine the pore structure modifcations at 28 days. The
hydration products for cement paste cured at each determined age were characterized by X-ray difraction and the
content of CH and CSH was obtained from thermogravimetric analysis (TGA). As a result, the ternary blended concrete
specimens showed lower deterioration degree when subjected to the freeze and thaw cycles. This may be due to a
latent hydraulic and/or pozzolanic reaction producing more CSH in the matrix, which in turn increases the volume of
small pores. The increased content of C–S–H gel for OG30F20 was confrmed by TGA, accounting for 69.9%. However,
the binder system consisting of ordinary Portland cement and GGBS did not exhibit higher resistance to the given
deleterious environment, presumably due to a delayed hydration process.
- URI
- https://www.dbpia.co.kr/journal/articleDetail?nodeId=NODE10524157https://repository.hanyang.ac.kr/handle/20.500.11754/172298
- ISSN
- 1976-0485; 2234-1315
- DOI
- 10.1186/s40069-020-00447-4
- Appears in Collections:
- RESEARCH INSTITUTE[E](부설연구소) > RESEARCH INSTITUTE OF ENGINEERING & TECHNOLOGY(공학기술연구소) > Articles
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