Pore characteristics and mechanical properties of sandstone under the influence of temperature

This paper experimentally studies the variation of pore characteristics and mechanical properties of sandstone at different temperatures (from 25 °C to 600 °C). The results show that the sandstone samples mainly have holes with diameters between 0.7 μm and 3 μm and at threshold diameters of 0.01 μm and 3 μm, the cumulative pore volume changes drastically. The threshold temperature of sandstone is 400 °C. If the temperature is lower than 400 °C,...