Pipe Concrete
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| Pipe Concrete |
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Two types of concrete pipe commonly used today are pre-stressed concrete cylinder pipe (PCCP) and reinforced concrete pipe (RCP). PCCP is used for force mains, while RCP is used primarily for gravity lines. PCCP may be of either embedded cylinder (EC) or lined-cylinder construction (LC). The construction process for both the LC and EC begins by casting a concrete core in a steel cylinder. This single process produces the LC pipe. Once the cylinder cures, it is wrapped with a pre-stressed steel wire and coated with a cement slurry and a dense mortar or concrete coating to produce the EC pipe. The manufacturing process for reinforced concrete cylinder pipe (RCCP) is similar to embedded cylinder, however, a reinforcing cage and the steel cylinder are positioned within a reusable vertical form and the concrete is cast instead of using the pre-stressed wire. RCCP can be cured by using either water or steam. |