Influence of Roasting Temperature on Properties of Sludge-Based Ceramsite

摘要

The effects of roasting temperature (1000, 1050, 1100 and 1150°C) on properties of sludge-based ceramsite such as cylinder compressive strength, apparent density, bulk density and water absorption were studied in this paper in order to promote the use of sludge. Meanwhile, the microstructures of ceramsite at different temperatures were analyzed by scanning electron microscopy (SEM). The results indicate that the roasting temperature indeed affects the microstructure and properties of ceramsite. The microstructure is denser with the increasing of temperature. When the temperature is 1150°C, the microstructure is the densest and the properties are the best.