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Hydrothermal solidification of sepiolite clay was carried out at different curing temperatures (100°C and 200°C) with an introduction of calcium hydroxide. The addition of calcium hydroxide greatly affected the stability of sepiolite within sepiolite clay. When Ca/Si molar ratio (C/S) is lower than 0.4, sepiolite sustained well at both curing temperatures even for a long curing time (72h), and above...
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