Prestressed Concrete Cylinder Pipe (AWWA C301 standard) is a composite pipe consisting of a concrete core, a thin steel cylinder, high-tensile prestressing wires, and a mortar coating. The concrete core is the main structural load-bearing component with the steel cylinder acting as a water barrier between concrete layers. Using our Near Field Testing (NFT) and Remote Field Testing (RFT) technologies, as well as complementary tools such as CCTV  and LiDAR, PICA can detect the following for embedded cylinder and lined cylinder PCCP:

  • Cylinder corrosion
  • Broken wires (hydrogen embrittled or corroded through)
  • Out-of-round and denting
  • Liner spalling
  • Preferential weld corrosion
  • Loss of pre-load