Table 2 Main mineral composition of coarse sandstone after high temperature treament.
From: Effect study of heat treatment on tensile properties of coarse sandstone
Temperature/°C | Chemical reaction | Composition/(%) | Temperature/°C | Chemical reaction | Composition/(%) |
|---|---|---|---|---|---|
25 | SiO2 | 62 | 500 | SiO2 | 69 |
(Na,Ca)Al(Si,Al)3O8 | 38 | (Na,Ca)Al(Si,Al)3O8 | 31 | ||
100 | SiO2 | 67 | 600 | SiO2 | 48 |
(Na,Ca)Al(Si,Al)3O8 | 33 | (Na,Ca)Al(Si,Al)3O8 | 52 | ||
200 | SiO2 | 63 | 700 | SiO2 | 37 |
(Na,Ca)Al(Si,Al)3O8 | 37 | (Na,Ca)Al(Si,Al)3O8 | 63 | ||
300 | SiO2 | 66 | 800 | SiO2 | 31 |
(Na,Ca)Al(Si,Al)3O8 | 34 | (Na0.84Ca0.16)Al1.16Si2.84O8 | 69 | ||
400 | SiO2 | 71 | 900 | SiO2 | 23 |
(Na,Ca)Al(Si,Al)3O8 | 29 | (Na0.84Ca0.16)Al1.16Si2.84O8 | 77 |
