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Conducting Precast Concrete Cylinder Pipe Condition Assessment By Matching Corrosion Damage Mechanisms To Diagnostic Methods

Conducting Precast Concrete Cylinder Pipe Condition Assessment By Matching Corrosion Damage Mechanisms To Diagnostic Methods
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The major damage mechanisms for Precast Concrete Cylinder Pipe (PCCP) are well-known for both water transmission mains and wastewater force mains.

Product Number: 51322-18234-SG
Author: Robert A. (Randy) Nixon,
Publication Date: 2022
Industries: Water/Wastewater , Coatings
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$20.00
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Precast concrete cylinder pipe (PCCP) has been widely used successfully for both water transmission and wastewater force mains for many decades.  In the case of water conveyance, the majority of failures occur due to soil side deterioration.  This includes chloride intrusion and low pH soils and ground water promoting corrosion of the prestressed wires.  High sulfate bearing ground waters can also cause expansive degradation of the cement mortar coating exposing the prestressed wires to corrosive conditions.  Internal corrosion rarely results in PCCP failure in potable water conveyance. 

Precast concrete cylinder pipe (PCCP) has been widely used successfully for both water transmission and wastewater force mains for many decades.  In the case of water conveyance, the majority of failures occur due to soil side deterioration.  This includes chloride intrusion and low pH soils and ground water promoting corrosion of the prestressed wires.  High sulfate bearing ground waters can also cause expansive degradation of the cement mortar coating exposing the prestressed wires to corrosive conditions.  Internal corrosion rarely results in PCCP failure in potable water conveyance. 

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