Thermal Activation of High-Alumina Coal Gangue Auxiliary Cementitious Admixture: Thermal Transformation, Calcining Product Formation and Mechanical Properties.

Almost no weight loss was observed before 372.86 °C, but a rapid weight loss occurred in the range of 372.86–424.53 °C due to dehydroxylation of CH; thereafter, weight loss proceeded moderately before 559.21 °C, and then became a little significant in the temperature range of 559.21–689.62 °C due to dehydroxylation of kaolinite, and finally turned to be mild until 1050 °C due to volatilization of some matters in HACG.

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