Sewer bricks are specially designed bricks used in the construction of sewers and drainage systems. They are typically made from clay or shale and are fired in kilns to achieve high strength and durability.

Key characteristics of sewer bricks:

• High compressive strength: This ensures that the bricks can withstand the weight of the soil and other materials above them.
• Low water absorption: This prevents the bricks from absorbing water and weakening over time.
• Resistance to chemicals: Sewer bricks must be able to resist the corrosive effects of sewage and other chemicals.
• Frost resistance: In areas with freezing temperatures, sewer bricks must be able to withstand freeze-thaw cycles without cracking.

Application of sewer bricks:

• Construction of sewer pipes and channels: Sewer bricks are used to build the walls and floors of underground sewers.
• Manhole construction: They are also used to build the walls and covers of manholes, which provide access to the sewer system for maintenance and inspection.
• Other drainage structures: Sewer bricks can be used in the construction of other drainage structures, such as storm drains and culverts.