| 碳化对加填料氯氧镁胶凝材料力学性能的影响 |
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| 引用本文： | 曼阳阳,肖学英,董金美,李颖,文静,常成功,郑卫新,黄青.碳化对加填料氯氧镁胶凝材料力学性能的影响[J].盐湖研究,2019,27(3). |
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| 作者姓名： | 曼阳阳 肖学英 董金美 李颖 文静 常成功 郑卫新 黄青 |
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| 作者单位： | 中国科学院青海盐湖研究所,中国科学院青海盐湖研究所,中国科学院青海盐湖研究所,中国科学院青海盐湖研究所,中国科学院青海盐湖研究所,中国科学院青海盐湖研究所,中国科学院青海盐湖研究所,中国科学院青海盐湖研究所 |
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| 基金项目： | 青海省重大科技专项(2015-GX-A1A)；盐湖镁资源功能化利用关键技术研究与工业示范。 |
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| 摘 要： | 以添加不同掺量填料的氯氧镁水泥(MOC) 试件为基体,在空气和碳化箱中分别养护至规定龄期,研究碳化对掺加填料MOC力学性能的影响,并与空气环境进行对比,运用XRD和SEM分析碳化后水化产物和微观结构的变化规律。结果表明,28d龄期内,随着填料掺量的增加MOC试件碳化后的抗折强度均有所增加,碳化后的抗压强度均有提升,碳化过程反应生成了MgCO<sub>3</sub>,不同碳化龄期的主要物相均为5Mg(OH)<sub>2</sub>.MgCl<sub>2</sub>.8H<sub>2</sub>O(5.1.8),而掺加填料不影响MOC的水化产物的组成。
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| 关 键 词： | 氯氧镁胶凝材料 碳化 水化产物 力学性能 微观结构 |
| 收稿时间： | 2018/8/2 0:00:00 |
| 修稿时间： | 2018/9/10 0:00:00 |
Effect of Carbonization on Mechanical Properties of Modified Magnesium Oxychloride Cementitious Materials |
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| MAN Yang-yang,XIAO Xue-ying,DONG Jin-mei,LI Ying,WEN Jing,CHANG Cheng-gong,ZHENG Wei-xin and HUANG Qing.Effect of Carbonization on Mechanical Properties of Modified Magnesium Oxychloride Cementitious Materials[J].Journal of Salt Lake Research,2019,27(3). |
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| Authors: | MAN Yang-yang XIAO Xue-ying DONG Jin-mei LI Ying WEN Jing CHANG Cheng-gong ZHENG Wei-xin and HUANG Qing |
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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,Xining,Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining,Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining,Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining,Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining,Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining,Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining,Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining |
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| Abstract: | The magnesium oxychloride cement (MOC) specimens with different filler contents were added as the matrix, and were respectively maintained in the air and carbonization tanks to the specified age. The effects of carbonization on the mechanical properties of the mixed filler MOC were studied and compared with the air environment. XRD and SEM were used to analyze the changes of hydration products and microstructure after carbonization. During the 28-day period, the results show that with the increase of filler content, the flexural strength of MOC specimens increases after carbonization, and the compressive strength after carbonization increases. The carbonation process produces MgCO3, and the main phases of different carbon ages are average. It is 5Mg(OH)2?MgCl2?8H2O(5?1?8), and the addition of filler does not affect the composition of the hydration product of MOC. |
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| Keywords: | Magnesium oxychloride gelling materials Carbonization Hydration products Mechanical properties Microstructure |
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