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Cemented coal gangue-fly ash backfill (CGFB), which is a mixture of coal gangue, fly ash, cement and water, is being extensively utilized in underground coal mines of China for subsidence control and waste management. One of the most significant evaluation criteria for CGFB is its mechanical performance, which is affected by the thermal (T, e.g., temperature evolution), hydraulic (H, e.g., suction...
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