The correct answer is D. Refractory bricks resist high temperature, chemical action, and dampness.
Refractory bricks are made from materials that are able to withstand high temperatures without melting or deforming. They are often used in furnaces, kilns, and other high-temperature applications. Refractory bricks can also be used to protect structures from the effects of fire and other extreme heat.
Refractory bricks are made from a variety of materials, including clay, silica, and alumina. The type of material used will depend on the specific application for which the brick is being used. For example, bricks that are used in furnaces that reach very high temperatures will need to be made from materials that have a high melting point.
Refractory bricks are typically laid in a pattern that allows for good airflow. This helps to prevent the bricks from overheating and cracking. The bricks are also often sealed with a refractory cement or grout to further protect them from the elements.
Refractory bricks are an essential part of many high-temperature applications. They provide a safe and reliable way to withstand the rigors of extreme heat.
Here are some additional details about each of the options:
- High temperature: Refractory bricks are designed to withstand high temperatures. They are often used in furnaces, kilns, and other high-temperature applications.
- Chemical action: Refractory bricks are also resistant to chemical action. This makes them ideal for use in applications where they may be exposed to acids or other corrosive chemicals.
- Dampness: Refractory bricks are also resistant to dampness. This makes them ideal for use in applications where they may be exposed to water or other moisture.