The Salt Attack Performance of Magnesium Oxychloride Cement Exposure to Three Kinds of Brines
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2020年第1期
论文作者：黄青 LI Ying CHANG Chenggong WEN Jing DONG Jinmei ZHENG Weixin A Danchun LIU Pan DONG Fei ZHOU Yuan 肖学英
文章页码：155 - 166
摘 要：Salt attack performance of magnesium oxychloride cement（MOC） in brine was investigated from the viewpoints of strength development and strength coefficient. Microstructure was studied using quantitative X-ray diffraction（QXRD）, thermogravimetry（TG） and scanning electron microscopy（SEM）. The results show that MOC mortars have outstanding salt attack performance after aging brine and raw brine immersion. The salt attack coefficients of MOC mortars are higher than 0.8, which is qualified for application in saline soil and salt lake area. The reason is that salt brine solution enters into the voids of MOC and plays a role of toughening and strengthening in the MOC.
黄青1,2,3，LI Ying1,2，CHANG Chenggong1,2，WEN Jing1,2，DONG Jinmei1,2，ZHENG Weixin1,2,3，A Danchun1,2,3，LIU Pan1,2,3，DONG Fei1,2,3，ZHOU Yuan1,2，肖学英1,2
1. Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences2. Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province3. University of Chinese Academy of Sciences
摘 要：Salt attack performance of magnesium oxychloride cement（MOC） in brine was investigated from the viewpoints of strength development and strength coefficient. Microstructure was studied using quantitative X-ray diffraction（QXRD）, thermogravimetry（TG） and scanning electron microscopy（SEM）. The results show that MOC mortars have outstanding salt attack performance after aging brine and raw brine immersion. The salt attack coefficients of MOC mortars are higher than 0.8, which is qualified for application in saline soil and salt lake area. The reason is that salt brine solution enters into the voids of MOC and plays a role of toughening and strengthening in the MOC.
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