Computers and Concrete

  • 제13권6호
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  • Pages.695-707
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  • 2014
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  • 1598-8198(pISSN)
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  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Chloride binding isotherms of various cements basing on binding capacity of hydrates

  • 투고 : 2012.12.15
  • 심사 : 2014.05.01
  • 발행 : 2014.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

This study investigated the chloride binding isotherms of various cement types, especially the contributions of C-S-H and AFm hydrates to the chloride binding isotherms were determined. Ordinary Portland cement (OPC), Modified cement (MC), Rapid-hardening Portland cement (RHC) and Low-heat Portland cement (LHC) were used. The total chloride contents and free chloride contents were analyzed by ASTM. The contents of C-S-H, AFm hydrates and Friedel's salt were determined by X-ray diffraction Rietveld (XRD Rietveld) analysis. The results showed that OPC had the highest chloride binding capacity, and, LHC had the lowest binding capacity of chloride ions. MC and RHC had very similar capacities to bind chloride ions. Experimental equations which distinguish the chemically bound chloride and physically bound chloride were formulated to determine amounts of the bound chloride basing on chloride binding capacity of hydrates.

키워드

참고문헌

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피인용 문헌

  1. Prediction of chloride binding isotherms for blended cements vol.17, pp.5, 2016, https://doi.org/10.12989/cac.2016.17.5.655
  2. Chloride diffusion in concrete associated with single, dual and multi cation types vol.17, pp.1, 2016, https://doi.org/10.12989/cac.2016.17.1.053
  3. Structure, orientation, and dynamics of water-soluble ions adsorbed to basal surfaces of calcium monosulfoaluminate hydrates vol.20, pp.38, 2018, https://doi.org/10.1039/C8CP03872D
  4. Chloride resistance and binding capacity of cementitious materials containing high volumes of fly ash and slag vol.73, pp.2, 2014, https://doi.org/10.1680/jmacr.19.00163