| 陈后维,章祥林,靳廷甲,徐建.低品级菱镁矿制耐水氯氧镁胶凝材料的研制[J].安徽建筑大学学报,2015,23(1):48-51 |
| 低品级菱镁矿制耐水氯氧镁胶凝材料的研制 |
| The Preparation of Water-resistant Magnesium Oxychloride Cement Made with Low-grade Magnesite |
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| DOI：10.11921/j.issn.2095-8382.20150111 |
| 中文关键词: 菱镁矿 镁质胶凝材料 耐水性能 |
| 英文关键词: magnesite magnesium oxychloride cement water resistance. |
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| 中文摘要: |
| 用粉煤灰、磷酸、硫酸铝、有机硅防水剂以及活性氧化镁含量为34.91%的低品级轻烧氧化镁研制出一种耐水氯氧镁胶凝材料，并对镁质材料的强度、耐水性能进行了测试。通过分析粉晶XRD衍射图样和断面微观结构对镁质材料的耐水机理进行了研究。研究结果表明：改性过的镁质材料具有优良的耐水性能，其28d软化系数从0.76提高到了1.01。该方法充分利用了低品级菱镁矿资源，为镁质胶凝材料的制备提供了新思路。 |
| 英文摘要: |
| A kind of water-resistant magnesium oxychloride cement(MOC) were made by fly ash, phosphoric acid, aluminum sulfate, organosilicon water-proofing agent and low-grade light burned magnesium oxide contains 34.91% active magnesium oxide. The materials' strength and water resistance were tested. Crystal powder XRD analysis and fracture surface SEM analysis were applied to study the materials' water-tolerant mechanism. The results showed that the improved magnesia materials had fine water resistance, soft coefficient raised from 0.76 to 1.01. This method could take full advantage of low-grade magnesite and provides a new method to prepare magnesia cementing materials. |
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