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    Prediction and Control of Sulfide Induced Corrosion in Concrete Sewer Infrastructure and Rehabilitation Techniques

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    Most cities, counties, and sanitary districts have used concrete pipe for sewer construction during the past 100 years. Many of these pipelines under certain site conditions have been corroded by sulfuric acid formed from sulfide gas. Despite this track record, many design engineers are still selecting concrete pipe with some allowance for corrosion using the somewhat outdated sacrificial wall thickness method. There are numerous agencies which do not even include sulfide corrosion prediction and control as part of the sewer structure material selection process. Even when sulfide corrosion studies are undertaken, no engineering considerations are given for the potential of corrosion in structures such as wet wells, manholes, drop structures, and metering stations. Deteriorated concrete pipe in some cases is replaced with new concrete pipe with no provisions for corrosion and such practices will lead to premature failure of the sewer system and excessive rehabilitation budgets. This paper presents the state-of-the-art of prediction and control of sulfide corrosion in sewers and rehabilitation methods available for repairing such sewer systems.


    sanitary, sewers, concrete, rehabilitation, sulfide, coatings, liners, admixtures, corrosion

    Author Information:

    Jeyapalan, JK
    Engineering Consultant, Redmond, Washington

    Committee/Subcommittee: G01.14

    DOI: 10.1520/STP19768S