- Time:Aug 03, 2023
Refractory cement is a refractory material specially used for refractory components and refractory linings. It is a powdery substance usually composed of refractory clay, high temperature mineral powder and other additives. When refractory cement is mixed with water, a plastic paste is formed, which then hardens during curing.
Refractory cement undergoes a chemical reaction when exposed to moisture, a process known as hydration. The hydration reaction causes the particles in the refractory cement to gradually bond together and form a hardened, strong structure. The hardening speed of refractory cement depends on many factors, including the composition of the cement, ambient temperature and humidity, etc.
Once the refractory cement is fully hardened, it becomes very strong and durable. The hardened refractory cement has good compressive strength, wear resistance and corrosion resistance. This makes it widely used in refractory masonry and refractory linings, such as furnaces, flues, high-temperature equipment, etc.
It should be noted that the hardening process of refractory cement takes a certain amount of time. Initial hardening usually begins within hours, but full hardening takes longer, possibly days or weeks. During this hardening process, it is recommended to apply proper moisture curing and avoid over drying of the refractory cement to ensure the best hardening effect.
In summary, refractory cement undergoes a hydration reaction and gradually hardens when mixed with water. Once fully hardened, it has strong properties and is suitable for refractory structural and refractory lining applications.
