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Water-to-Cement Ratio of Magnesium Oxychloride Cement Foam Concrete with Caustic Dolomite Powder

Author

Listed:
  • Weixin Zheng

    (Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, China
    Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province, Xining 810008, China)

  • Xueying Xiao

    (Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, China
    Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province, Xining 810008, China)

  • Jing Wen

    (Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, China
    Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province, Xining 810008, China)

  • Chenggong Chang

    (Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, China
    Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province, Xining 810008, China)

  • Shengxia An

    (Qinghai Building and Materials Research Co., Ltd., Xining 810008, China
    The Key Lab of Plateau Building and Eco-Community, Xining 810008, China)

  • Jingmei Dong

    (Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, China
    Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province, Xining 810008, China)

Abstract

Magnesium oxychloride cement (MOC) foam concrete (MOCFC) is an air-hardening cementing material formed by mixing magnesium chloride solution (MgCl 2 ) and light-burned magnesia (i.e., active MgO). In application, adding caustic dolomite powder into light-burned magnesite powder can reduce the MOCFC production cost. The brine content of MOC changes with the incorporation of caustic dolomite powder. This study investigated the relationship between the mass percent concentration and the Baumé degree of a magnesium chloride solution after bischofite (MgCl 2 ·6H 2 O) from a salt lake was dissolved in water. The proportional relationship between the amount of water in brine and bischofite, and the functional formula for the water-to-cement ratio ( W / C ) of MOC mixed with caustic dolomite powder were deduced. The functional relationship was verified as feasible for preparing MOC through the experiment.

Suggested Citation

  • Weixin Zheng & Xueying Xiao & Jing Wen & Chenggong Chang & Shengxia An & Jingmei Dong, 2021. "Water-to-Cement Ratio of Magnesium Oxychloride Cement Foam Concrete with Caustic Dolomite Powder," Sustainability, MDPI, vol. 13(5), pages 1-12, February.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:5:p:2429-:d:504785
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    References listed on IDEAS

    as
    1. Gediminas Kastiukas & Shaoqin Ruan & Cise Unluer & Shuang Liang & Xiangming Zhou, 2019. "Environmental Assessment of Magnesium Oxychloride Cement Samples: A Case Study in Europe," Sustainability, MDPI, vol. 11(24), pages 1-21, December.
    2. Lei Wang & Fanxing Guo & Huamei Yang & Yan Wang & Shengwen Tang, 2021. "Comparison Of Fly Ash, Pva Fiber, Mgo And Shrinkage-Reducing Admixture On The Frost Resistance Of Face Slab Concrete Via Pore Structural And Fractal Analysis," FRACTALS (fractals), World Scientific Publishing Co. Pte. Ltd., vol. 29(02), pages 1-18, March.
    3. Lei Wang & Ruyi Luo & Wei Zhang & Minmin Jin & Shengwen Tang, 2021. "Effects Of Fineness And Content Of Phosphorus Slag On Cement Hydration, Permeability, Pore Structure And Fractal Dimension Of Concrete," FRACTALS (fractals), World Scientific Publishing Co. Pte. Ltd., vol. 29(02), pages 1-18, March.
    4. Lei Wang & Minmin Jin & Fanxing Guo & Yan Wang & Shengwen Tang, 2021. "Pore Structural And Fractal Analysis Of The Influence Of Fly Ash And Silica Fume On The Mechanical Property And Abrasion Resistance Of Concrete," FRACTALS (fractals), World Scientific Publishing Co. Pte. Ltd., vol. 29(02), pages 1-18, March.
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