Miami Thrice; Lanzo, HJ3, and Carbon Fiber Reinforced Polymer, Preempt Catastrophic Line Breaks with Emergency Repairs in Dade County 54-inch and 48-inch PCCP for Drinking Water using (CFRP)

摘要

One of the more compelling stories being told within today's rehabilitation framework is that of how we are dealing with our aging Potable Water Infrastructure. The existence of deteriorated Large Diameter Pre-stressed Cylinder pipes (PCCP) in water transmission lines throughout the United States represents a liability shared by many municipalities. A vast inventory of late 1970’s and early 1980’s pipe are suspect due to corrosion and pre-stressing wire breaks Our most prolific water authorities and municipalities have entered into a race against time to prevent catastrophic failure and shutdown from occurring in these water transmission lines. A path being followed is to first perform a condition assessment, and then to prioritize a repair schedule for deteriorated pipe. Carbon Fiber Reinforced Polymer (CFRP) systems have increasingly become a reliable technology utilized for internal and external rehabilitation of PCCP and Reinforced Concrete Pipe (RCP). The use of CFRP has proven beneficial to the drinking water industry due to the fact that it can be field applied, avoiding the need for expensive and disruptive excavations. The integrity of CFRP repairs for drinking water pipe relies on: an accurate condition assessment of the host pipe, a transfer of the assessment and design information from the owner to a qualified engineer, a specification that requires qualified and experienced CFRP manufacturers, designers, installers, and inspectors. This paper shall present two separate projects performed for Miami Dade WASD where one such 54-inch and a 48-inch Lock Joint Cylinder pipe system were first non-destructively identified as being defective, then rehabilitated using the HJ3 manufactured CFRP repair system installed by Lanzo Trenchless Technologies.