Drying Refractory Materials
Curing is the process in which concrete is protected against dehumidification by keeping it heated up at a specific temperature range during a prescribed period of time. For example furnace firebricks are cured at a temperature of 1,400°C during 4 to 5 days.
Curing ensures more strength and reduced permeability. Curing is also important in reducing cracks in concrete, which can have serious consequences to the durability and operational capability. Cracks allow damaging materials to creep in. Because of the low permeability of concrete the surface is being protected. Effective curing can help against the appearance of cracks and shrinkage.
Prevent maintenance to the firebricks of furnaces
The drying or curing of refractory materials is an important treatment of firebricks for example furnace builders. These firebricks undergo a specific heat treatment up to no less than 1,400°C, in order to realize the correct characteristics. Curing these bricks minimizes maintenance because of cracking or shrinkage due to temperature fluctuations.