碳化对加填料氯氧镁胶凝材料力学性能的影响
Effect of Carbonization on Mechanical Properties of Modified Magnesium Oxychloride Cementitious Materials
投稿时间:2018-08-02  修订日期:2018-09-10
DOI:
中文关键词:  氯氧镁胶凝材料  碳化  水化产物  力学性能  微观结构
英文关键词:Magnesium oxychloride gelling materials  Carbonization  Hydration products  Mechanical properties  Microstructure
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。
作者单位邮编
曼阳阳 中国科学院青海盐湖研究所 810008
肖学英 中国科学院青海盐湖研究所 810008
董金美 中国科学院青海盐湖研究所 
李颖 中国科学院青海盐湖研究所 
文静 中国科学院青海盐湖研究所 
常成功 中国科学院青海盐湖研究所 
郑卫新 中国科学院青海盐湖研究所 
黄青 中国科学院青海盐湖研究所 
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中文摘要:
      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。
英文摘要:
      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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