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采用化学方法合成出纯的碳硫硅钙石和钙矾石,对比研究了二者的稳定性。结果显示:钙矾石比碳硫硅钙石更易受到碳酸钠破坏;碳硫硅钙石与氯化钡几乎不发生反应,钙矾石则较易被氯化钡破坏;在碳化条件下,钙矾石较易分解,碳硫硅钙石则几乎没变化。碳硫硅钙石在碳酸钠或氯化钡溶液中的稳定性、热分解稳定性和碳化稳定性均明显高于钙矾石,可能是由于碳硫硅钙石结构中离子键和氢键强度高于钙矾石。
The chemical synthesis of pure boehmite and ettringite, a comparative study of the stability of the two. The results show that ettringite is more susceptible to sodium carbonate than carbosulfite; carbosulfite hardly reacts with barium chloride, ettringite is more susceptible to barium chloride destruction; under carbonation conditions, calcium Alum is more easily decomposed, and there is almost no change in the composition of the kaempsonite. The stability, thermal decomposition stability and carbonization stability of glauberite in sodium carbonate or barium chloride solution were significantly higher than that of ettringite, probably due to the ionic bond and hydrogen bond strength in the structure of the glauberite Higher than ettringite.