Environmental assessment, microstructural behaviour, stress–strain characteristics, and effect of exposure to extreme temperature on sustainable concrete made with dolomite mining residues

Coal gangue‐based ceramics foams by water spray granulation and post particle stacking method

“…The weight loss in the temperature range of 85‒294°C is mainly caused by the loss of physically adsorbed water and organic matter in the raw material; while in the temperature range of 294‒620°C, a significant weight loss of 12.4% was observed, which is due to the oxidative decomposition of PVA, oxidation of carbon and other combustible materials in coal gangue 14,32 . At the higher temperature in the range of 620–798°C, the weight loss was 6.7%, attributed to the decomposition of dolomite and talc 33,34 . When the temperature was raised to 1150°C, only a slight weight loss was observed, which was caused by the unknown substances in talc and gangue, in addition to the weight gain process of SiC 35 .…”

“…14,32 At the higher temperature in the range of 620-798 • C, the weight loss was 6.7%, attributed to the decomposition of dolomite and talc. 33,34 When the temperature was raised to 1150 • C, only a slight weight loss was observed, which was caused by the unknown substances in talc and gangue, in addition to the weight gain process of SiC. 35 The volatilization, decomposition, and reactions of the vast majority of substances throughout the calcination process are accompanied by the generation of gases, which ultimately lead to the weight loss and benefit the formation of pore structures.…”