作　　者： ; ;

机构地区： 华南建设学院

出　　处： 《硅酸盐学报》 1995年第2期211-218,共8页

摘　　要： 本文讨论了铝酸盐矿物对氯氧镁水泥的水化产物、耐水性和强度的影响。通过ＸＲＤ相分析，证明了具有水化活性的铝酸盐矿物（如ＣＡ，Ｃ４＿ＡＦ等）对氯氧镁水泥的水化相有影响；而没有水化活性的铝酸盐矿物（如Ｃ＿２ＡＳ）对氯氧镁水泥的水化相没有影响。当氯氧镁水泥中ＭｇＯ／ＭｇＣｌ＿２摩尔比大于５时，含有ＣＡ或Ｃ＿４ＡＦ的净浆硬化体中上要水化相更是３·１·８相，而不含ＣＡ或Ｃ＿４ＡＦ或含Ｃ＿２ＡＳ的净浆硬化体中主要水化相是５·１·８相。由于３·１·８相比５·１·８相更容易与空气中的ＣＯ＿２反应，形成在水中更稳定的氯碳酸盐相，因而加入具有水化活性的铝酸盐矿物使氯氧镁水泥的耐水性有所改善，但不降低其强度。 The effects of aluminate minerals on hydrates,water-resistance and strength of magnesiurm oxychloride cement(MOC)have been discussed.The X-ray diffraction examination results show that the Received:November.1993.Correspondent:Zhang Chuanmei.South China Construction University,Guangzhou 410405.phases formed during the hydration of MOC can be changed by the hydrable aluminates minerals,but can notbe changed by the unhydrable aluminate minerals. The phase formed by the hydration of plain MOC which themole ratio of MgO/MgCl_2 is more than 5, is 5Mg (OH)_2.MgCl_2·8H_2O(5·1· 8 phase), but the phaseformed after the hydration of MOC with the same mole ratio containning CA or C_4 AF is 3Mg(OH)_2· MgCl_2· 8H_2O(3·1· 8 phase).Because 3·1· 8 phase can react with CO_2 in air to form a more stable carbonatedphase in water more easily than 5·1· 8 phase,the water-resistance of MOC is increased by the addition ofthe hydrable aluminates.And their addition can not reduce the strength of MOC.

关 键 词： 氯氧镁水泥 铝酸盐 耐水性 水泥

领　　域： [化学工程] [化学工程]