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1 前言菱镁砼材料又称氯氧镁水泥制品或索瑞尔(Sorel)水泥制品,它是一种气硬性胶凝材料,由瑞典学者索瑞尔发明。其基本原料为煅烧菱镁矿所得的菱苦土(主要成分为氧化镁)以及卤水(氯化镁水溶液)。该材料具有凝结速度快、强度高、粘结力强、耐磨损、易成型等优点.在本世纪50年代,原苏联、东欧一些国家曾将它用于制作建筑材料,但因其耐水性差,反卤严重而无法推广。到70年代,美国、南斯拉夫等国的研究者利用近代先进测试手段,陆续发表了有关该材料基本水化相的文章,并力图用外加剂的方法改进材料的性能,从而取得了较好的效果。我国对菱镁砼材料的应用也有近40年的历史。50年代初,国内就有用它制作地坪的报道。50年代末,很多地方将这种材料与各种有机或无机填料拌制成菱镁混凝土,再配上竹筋制成梁、板、门窗框、扇等,然而,由于当时其翘曲、反卤的基本问题尚未
1 Introduction Magnesite, also known as oxychloride cement products or Sorel cement products, is an air-hardening cementitious material invented by the Swedish scholar Sorel. The basic raw materials are magnesite obtained from calcined magnesite (the main component is magnesium oxide) and brine (magnesium chloride aqueous solution). The material has the advantages of high speed of coagulation, high strength, strong adhesion, wear resistance, and easy molding. In the 1950s, some countries in the former Soviet Union and Eastern Europe used it for building materials, but due to poor water resistance. Anti-halogen serious and can not be promoted. By the 1970s, researchers in the United States, Yugoslavia, and other countries used modern advanced testing methods to publish articles on the basic hydration phase of the material, and tried to improve the performance of the material by using admixtures, and achieved good results. . The application of Magnesite materials in China is also nearly 40 years old. In the early 1950s, China used it to make floor reports. In the late 1950s, many localities mixed this material with various organic or inorganic fillers into magnesite concrete, matched with bamboo ribs to make beams, panels, door frames, fans, etc. However, due to warpage and opposition at the time, The basic problem of halogen has not yet