Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Study on Water Resistance of Environmentally Friendly Magnesium Oxychloride Cement for Waste Wood Solidification

  • Zhang, Feng-Jun (Anhui Key Laboratory of Advanced Building Materials, Anhui Jianzhu University) ;
  • Sun, Xian-Yang (Anhui Key Laboratory of Advanced Building Materials, Anhui Jianzhu University) ;
  • Li, Xuan (Anhui Key Laboratory of Advanced Building Materials, Anhui Jianzhu University) ;
  • Zhang, Dan (Anhui Key Laboratory of Advanced Building Materials, Anhui Jianzhu University) ;
  • Xie, Wen- Jie (Key Laboratory of Functional Molecule Design and Interface Process, Anhui Jianzhu University) ;
  • Liu, Jin (Key Laboratory of Functional Molecule Design and Interface Process, Anhui Jianzhu University) ;
  • Oh, Won-Chun (Department of Advanced Materials Science & Engineering, Hanseo University)
  • Received : 2018.05.01
  • Accepted : 2018.07.19
  • Published : 2018.09.30
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Abstract

In this study, different formulations of magnesium oxide and various modifiers (phosphoric acid, ferrous sulfate, pure acrylic emulsion, silicone acrylic emulsion, glass fiber, and polypropylene fiber) were used to prepare magnesium oxychloride cement composites. The compressive strength of the magnesium oxychloride cement was tested, and the softening coefficients of the composites after soaking in water were also calculated. The results showed that a magnesium oxychloride cement sample could not be coagulated when the MgO activity was 24.3%, but the coagulation effect of the magnesium oxide cement sample was excellent when the MgO activity was 69.5%. While pure acrylic emulsion, silicon-acrylic emulsion, and glass fiber showed insignificant modification effects on the magnesium oxychloride cement, ferrous sulfate heptahydrate, phosphoric acid, and polypropylene fiber could effectively improve its water resistance and compressive strength. When the phosphoric acid, ferrous sulfate heptahydrate, and polypropylene fiber contents were 0.47%, 0.73%, and 0.25%, respectively, the softening coefficient of a composite soaked in water reached 0.93 after 7 days, and the compressive strength reached 64.3 MPa.

Keywords

References

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