Research Article
Physical and Mechanical Properties of Gypsum-Like Rock Materials
Table 4
The main mineral composition of gypsum powder remolded samples in different states.
| | Temperature (°C) | Compound name | Chemical formula | Composition (%) |
| | Gypsum | Calcium sulfate hydrate | CaSO4·0.5H2O | 69 | | Calcium sulfate | Ca (SO4) | 31 | | Natural | Calcium sulfate hydrate | CaSO4·2H2O | 51 | | Calcium sulfate hydrate | Ca (SO4) (H2O)2 | 49 | | 45°C dehydration | Calcium sulfate hydrate | Ca (SO4) (H2O)2 | 96 | | Silicon oxide | SiO2 | 4 | | Water saturation | Calcium sulfate hydrate | CaSO4·2H2O | 81 | | Calcium sulfate hydrate | CaSO4 (H2O)2 | 19 | | 220°C high-temperature dehydration | Calcium sulfate hydrate | CaSO4·0.5H2O | 61 | | Calcium sulfate hydrate | CaSO4·2H2O | 39 |
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