Computers and Concrete

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Prediction of chloride binding isotherms for blended cements

  • Ye, Hailong (College of Civil Engineering and Architecture, Zhejiang University) ;
  • Jin, Xianyu (College of Civil Engineering and Architecture, Zhejiang University) ;
  • Chen, Wei (College of Civil Engineering and Architecture, Zhejiang University) ;
  • Fu, Chuanqing (College of Civil Engineering and Architecture, Zhejiang University) ;
  • Jin, Nanguo (College of Civil Engineering and Architecture, Zhejiang University)
  • Received : 2016.01.15
  • Accepted : 2016.02.15
  • Published : 2016.05.25
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Abstract

A predictive model for chloride binding isotherms of blended cements with various supplementary cementitious materials (SCMs) was established in this work. Totally 560 data points regarding the chloride binding isotherms of 106 various cements were collected from literature. The total amount of bound chloride for each mixture was expressed a combinational function of the predicted phase assemblage and binding isotherms of various hydrated phases. New quantitative expressions regarding the chloride binding isotherms of calcium-silicate-hydrate (C-S-H), AFm, and hydrotalcite phases were provided. New insights about the roles of SCMs on binding capabilities of ordinary portland cements (OPC) were discussed. The proposed model was verified using separate data from different sources and was shown to be reasonably accurate.

Keywords

Acknowledgement

Supported by : National Natural Science Foundation

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