Accession Number:

AD1049234

Title:

Implementation of Polyurea Applications for Wastewater System Corrosion-Mitigation Projects: Final Report on Project F15-AR04

Descriptive Note:

Technical Report

Corporate Author:

ERDC-CERL CHAMPAIGN United States

Personal Author(s):

• Wilson,Clint A.
• Mathis,Jaclyn S.
• Kramer,Wesley J.
• Kizer,Rachel E.

Report Date:

2017-07-24

Pagination or Media Count:

49.0

Abstract:

Corrosion of reinforced concrete in wastewater systems due to microbially generated sulfuric acid is a major problem for Department of Defense DoD facilities. A previous DoD-sponsored demonstration and validation project showed that liquid-applied polyurea liner technology can effectively rehabilitate wastewater systems and prevent further corrosion, but more work was needed before recommending the technologys adoption DoD-wide. This follow-on study explores and discusses additional issues and makes recommendations about polyureas use. Issues explored include behavior under high-velocity flow conditions, additional application configurations, field repair methods, behavior on steel substrates, comparisons with other rehabilitation products, industry perception and use, and sewer inflow and infiltration. The approach included a survey of municipal practices plus a literature review. Results showed that polyurea liners can be useful in mitigating the effects of corrosion, especially when sewer and wastewater environments are subject to movement, abrasion, or ultraviolet radiation. Recommendations to the DoDs Corrosion Prevention and Control Program include adding a polyurea section to UFGS 09 96 00 High Performance Coatings and referencing UFGS 09 96 00 within UFC 3-240-01 Wastewater Collection. The return on investment for this effort is 35.24

Descriptors:

• maintenance
• corrosion
• waste water
• Protective coatings
• PUBLIC UTILITIES
• SULFURIC ACID

Subject Categories:

• Water Pollution and Control
• Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE