Vitrified Clay Pipe (VCP)
Definition - What does Vitrified Clay Pipe (VCP) mean?
Vitrified Clay Pipe (VCP) is pipe made from a blend of clay and shale that has been subjected to high temperature to achieve vitrification, a process which results in a hard, inert ceramic. This pipe is widely used for the purpose of sewer collection owing to it being corrosion free, having a long life span and it being resistant to hydrogen sulphide which is one of the main gasses released from sewage.
Trenchlesspedia explains Vitrified Clay Pipe (VCP)
VCP is environmentally friendly due to its chief component being clay. These pipes are strong and durable. Some VCP pipes as old as 150 years are still in operational condition. Since the material of VCP is rigid it is not subject to problems like deflection and flattening when subjected to loads. Hydrogen sulphide released in industrial waste and sewer waste water is converted to sulphuric acid as a result of some chemical reactions. This gas is highly corrosive and can damage iron pipes but does not harm VCP. The vitrification process provides additional resistance, and protection against the loss of strength and degeneration without the use of additional coating.