降低菱镁水泥制品中水溶性氯离子含量的研究

关键字：降低,菱镁,水泥制品,水溶性,氯离子,含量,研究

（1. 北京市建筑节能与建筑材料管理办公室，北京  100039；2.中国建筑科学研究院建筑材料研究所，北京  100013）
 

    摘要：为了降低菱镁水泥制品中水溶性氯离子含量，通过添加改性剂的方式进行试验研究。结果表明，无机改性剂A和无机改性剂B单掺均能有效降低菱镁水泥制品中水溶性氯离子含量，最多可降低47.4%，且不影响菱镁水泥制品的28 d抗压强度；4种复掺组合中，1%的无机改性剂B与1%的有机改性剂C复合效果最好，水溶性氯离子含量较未掺改性剂的降低了36.12%，28 d抗压强度降低了19.55%。
    关键词：菱镁水泥制品；氯离子含量；返卤；改性剂；掺加方式
    中图分类号：TU375.2        文献标识码：A        文章编号：1001-702X（2017）12-0107-03

Studies to reduce water soluble chloride ion content of magnesium cement products
WEI Hanbo1，XING Jingming1，YE Wuping2
（1.The Building Energy Efficiency and Building Materials Management Office of Beijing，Beijing 100039，China；
2.Institute of Building Materials，China Academy of Building Research，Beijing 100013，China）

    Abstract：In order to reduce water soluble chloride ion content in magnesite cement board，studies are made by adding modifiers. The results show that，adding inorganic modifier A or B is effective to reduce water soluble chloride ion content of magnesium cement products. The content can be reduced by 47.4% at most，while the 28 d comprehensive strength is not affected. Among 4 types of combination，the composite effect of 1% inorganic modifier B and 1% organic modifier C is the best. Compared with single doped products，the water soluble chloride ion content decreased by 36.12%，and 28 d compressive strength decreased by 19.55%.
    Key words：magnesium cement products，the chloride ion content，halogenation，modifier，adding method