Study on Thermal Stability and High Temperature Gas Production of Silicate Concrete

In this paper, the thermal stability of ordinary silicate concrete is characterized by the synchronous thermal analyzer. Through the design of the heating gas extraction device, the gas production at elevated temperature of concrete is collected, and the gas composition and content were analyzed by gas chromatograph. The results show that the thermal loss of the concrete after drying is concentrated at 350∼700 °C, the weight loss is about 6%, the gas production at high temperature is mainly CO₂, accompanied by a small amount of CO, SO₂ and H₂O, and the rate of gas production of concrete is about 33L/kg. (paper)