Analysis of monitoring techniques for prestressed concrete cylinder pipe

Book · Sat Dec 31 04:00:00 EST 1994

OSTI ID:83011

Hall, S C ^[1]

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1. Ameron, Inc., South Gate, CA (United States). Engineering Development Center

Concrete pressure pipe (CPP) is used in water and waste water systems that serve virtually every city in North America. Various techniques are used to evaluate the corrosion state of a buried pipeline. The two most commonly used are the pipe-to-soil (P/S) and cell-to-cell potential techniques. However, only a few references exist relating to the use of these monitoring procedures for CPP. Various corrosion engineering firms have confidence in one or the other technique without being able to provide the rationale for their preference. Both techniques have recently been challenged as being insufficiently reliable for CPP. This project consisted of setting up simulated corrosion cells on a 48-inch (1.22 m) diameter prestressed concrete cylinder pipe (PCCP) line and allowing five corrosion engineering firms the opportunity to use their monitoring techniques to locate corroding sites. This project evaluated existing corrosion monitoring techniques based on measuring electrical potentials on PCCP. It was found that bonded and unbonded prestressed concrete cylinder pipe can be monitored for corrosion depending on the intensity of corrosion and the location of the corrosion site on the pipe circumference.

• OSTI ID: 83011
• Report Number(s): CONF-940222--
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING
COMPARATIVE EVALUATIONS
CORROSION PRODUCTS
DETECTION
ELECTRIC CONDUCTIVITY
EXPERIMENTAL DATA
MEASURING METHODS
MONITORING
PIPELINES
PRESTRESSED CONCRETE
SENSITIVITY
TRANSPORT
WASTE WATER