Abstract Aluminum hydroxide (AH3) has recently been shown to be able to activate hydration in ternesite, a phase found in some calcium sulfoaluminate (CSA) cements. This study explored the capacity of a number of calcium aluminates (C3A, C12A7, CA and C4A3 S ¯ ) to activate ternesite hydraulic reactivity. After laboratory synthesis, the aluminates were blended with ternesite at a ratio of 1:2 and their hydration was monitored with isothermal conduction calorimetry for 7 days at 25 °C. The resulting pastes were analysed with XRD, FTIR and DTA. The presence of ternesite in the pastes altered the aluminate heat flow curves, shortening the induction period and bringing the reaction peak forward, an indication of hastened hydration. Ternesite also altered the reaction products, which included calcium monosulfoaluminate hydrate and stratlingite.

中文翻译：

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铝酸钙能激活白钨矿的水合作用吗？

摘要 最近，氢氧化铝 (AH3) 已被证明能够激活白钨矿中的水合作用，这是在某些硫铝酸钙 (CSA) 水泥中发现的一种相。本研究探讨了许多铝酸钙（C3A、C12A7、CA 和 C4A3 S）激活白钨矿水力反应性的能力。在实验室合成后，铝酸盐与白钨矿以 1:2 的比例混合，并在 25°C 下用等温传导量热法监测它们的水合作用 7 天。用XRD、FTIR和DTA分析所得糊状物。糊状物中白钨矿的存在改变了铝酸盐热流曲线，缩短了诱导期并使反应峰提前，表明水合加速。白钨矿还改变了反应产物，其中包括单硫铝酸钙水合物和海钙石。