Effect of temperature on the radon release characteristics of red clay.

Bricks and tiles crafted from fired red clay are extensively utilized in everyday construction activities. However, red clay inherently contains radon gas, a radioactive substance that could potentially endanger human health. Hence, investigating the radon emission patterns of red clay post high-temperature treatment holds significant importance.

Laboratory investigation on engineering mechanics properties of granite after various heating/cooling treatments.

The purpose of this study is to investigate the engineering mechanical properties of granite after various heating/cooling treatments through laboratory investigation. Granite specimens were heated at different temperatures (25, 200, 400, 500, 600, and 800 °C) and cooled by two methods (natural cooling and water cooling) to investigate the change patterns of engineering mechanical properties of granite materials after heating/cooling treatments, including surface hardness, uniaxial compressive strength, modulus of elasticity, peak strain, and point load strength. The damage mechanisms of granite under different heating/cooling treatments were also revealed.