| 外掺Cl对磷酸镁水泥离子溶出和孔结构的影响 |
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| 引用本文： | 董飞,周永全,董金美,文静.外掺Cl对磷酸镁水泥离子溶出和孔结构的影响[J].盐湖研究,2021,29(2):20-28. |
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| 作者姓名： | 董飞 周永全 董金美 文静 |
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| 作者单位： | 中国科学院青海盐湖研究所,中国科学院盐湖资源综合高效利用重点实验室,青海 西宁 810008 ;青海省盐湖资源化学重点实验室,青海 西宁 810008;中国科学院大学,北京 100049 |
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| 基金项目： | 国家自然科学基金(U1507120)；青海省自然科学基金(2020-ZJ-746)；中国科学院青年创新促进会(2018467,2019423)。 |
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| 摘 要： | 通过测试不同Cl~-(NaCl)掺量磷酸镁水泥(MPC)浸取液中离子浓度及MPC硬化体的孔结构和吸水率,研究了Cl~-掺量和浸取时间对MPC硬化体平均孔径、孔隙率、孔径分布、孔体积分布、吸水率、MPC浸取液中Cl~-、Na~+、OH~-、Mg~(2+)、PO■和K~+浓度的影响,结果表明外掺Cl~-对MPC孔结构、离子溶出及吸水率有显著影响,当Cl~-掺量为1%时,MPC硬化体结构密实、孔隙率低、平均孔径小、吸水率小、MPC水化产物在水中的溶蚀量小。
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| 关 键 词： | 磷酸镁水泥(MPC) Cl~-掺量 离子溶出 孔结构 |
| 收稿时间： | 2020/12/16 0:00:00 |
| 修稿时间： | 2020/12/25 0:00:00 |
Ionic Dissolution Behavior of Magnesium Phosphate Cement Containing Chlorine |
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| DONG Fei,ZHOU Yong-quan,DONG Jin-mei,WEN Jing.Ionic Dissolution Behavior of Magnesium Phosphate Cement Containing Chlorine[J].Journal of Salt Lake Research,2021,29(2):20-28. |
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| Authors: | DONG Fei ZHOU Yong-quan DONG Jin-mei WEN Jing |
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| Institution: | Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences |
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| Abstract: | In the present work, the effects of Cl- content and leaching time on the average pore size, porosity, pore volume distribution, water absorption, and the Cl-, Na+, OH-, Mg2+, PO43- and K+ concentrations in magnesium phosphate cement (MPC) leach solutions were studied by measuring the ion concentration in the leaching solution of MPC with different Cl- (NaCl) contents and the pore structure and water absorption of MPC hardened bodies. The results show that the addition of Cl- has a significant effect on the pore structure, ion dissolution and water absorption of MPC. The MPC hardened material has a compact structure, low porosity, small average pore size, low water absorption, and a small amount of MPC hydration products in water when the Cl- content is 1%. |
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| Keywords: | magnesium phosphate cement (MPC) Cl- content ion dissolution pore structure |
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