Introduction to Refractory Concrete:
The Innovation in the construction material is increasing day by day. There are various types of concrete are manufactured for various purposes in the construction Industry.
Refractory concrete is one of the special types of concrete which is generally used for the construction of structures that are subjected to extreme temperatures. The normal concrete cannot withstand at a high temperature and it may disintegrate and collapsed.
Here, In this article, we will be discussing about Refractory Concrete and its Applications and Properties, Advantages and disadvantages of Refractory Concrete.
What Is Refractory Concrete?
Refractory concrete is a special type of concrete which has a property of handling high temperatures. Refractory concrete is heat-resistant concrete which can withstand a high temperature.
Refractory concrete is also known as heat-resistant concrete. The main and primary ingredient which is used for the manufacturing of refractory concrete is high alumina cement or calcium aluminate cement.
Refractory concrete adopted when the structure has to be subjected to very high temperatures and it is not possible to use conventional concrete because it may suffer to complete loss of Mechanical properties and physical integrity.
Refractory concrete is used in the construction of the chimneys in the buildings because the chimneys are subjected to a high temperature so that it is necessary to use fire resistance concrete in its construction.
When the concrete is subjected to extremely high temperature it will lead to a decrease in the hydraulic bond due to which there is a reduction in the compressive strength of the concrete.
Properties of Refractory Concrete:
The properties of refractory concrete are as follows.
- The Refractory concrete has good compressive strength.
- Refractory concrete can withstand at extreme temperatures without any disintegration.
- Refractory Concrete also has good Tensile strength.
- It also has a very less amount of shrinkage as compared to conventional concrete.
- The specific gravity of refractory concrete ranges between 0 to 3.0.
- The amount of heat of hydration in the refractory concrete is less.
Reinforcement in Refractory Concrete:
The proper care should be taken while applying the Steel bar in refractory concrete because the refractory concrete is exposed to extremely high temperatures.
If the temperature is increased beyond limit then behavior of the reinforcement will change and it will start to melt.
Application of Refractory Concrete:
The application of refractory concrete is as follows.
- The construction of the chimneys is done with the help of refractory concrete.
- Refractory concrete is also used in the construction of launching pad and station required for a rocket.
- The application of refractory concrete also includes in the construction of fire training areas which consists of wide flat surface areas with fire-resistant rooms.
- Refractory concrete is generally used in the construction of the runway pavements and the concrete pavements which are subjected to high temperatures.
- The refractory concrete is also used for the construction of the nuclear reactor which is subjected to high temperature.
Advantages of Refractory Concrete:
There are various advantages of refractory concrete as follows.
- Refractory concrete does not warp during the process of drying and firing.
- Refractory concrete has good compressive strength.
- Refractory concrete is strong and long-lasting.
- Refractory concrete in a world to which stands at extremely high temperatures.
- It can be moulded into any desired shape.
Disadvantages of Refractory Concrete:
There are also some disadvantages of refractory concrete are as follows.
- Refractory concrete may cause harm to the environment as well as human beings.
- The particles of the refractory concrete may cause harm to the human body.
- The refractory concrete has good integrity and air tightness.