Linabond: Corrosion Protection, Structural Rehabilitation and Containment in Wastewater Municipal Infrastructure

What Are Linabond Co-Liners™?

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Linabond® Co-Liners™ for Corrosion Protection, Containment and Structural Rehabilitation of Municipal Wastewater Infrastructure

Linabond® is a world leader in the development and manufacture of Co-Lining™ systems. For over 30 years, our patented composite technology has been considered by many well known design engineers as the most efficient and cost effective solution for corrosion protection, structural reinforcement, gas and liquid containment, and infiltration/inflow prevention for municipal wastewater concrete and steel infrastructure. Our award winning technology and QA/QC methods, which include the use of Internet sites devoted to each project, bring not only the highest technology to infrastructure, but also the best accountability in today's electronically connected world. The following video will show you the basics principles of Co-Lining™ systems.

Why Linabond® Co-Liners™?

H₂S Corrosion Mechanism

Wastewater corrosion protection is a major problem for municipalities worldwide. Every year, hundreds of millions of dollars are lost to wastewater concrete corrosion and the failure of H2S corrosion protection on a very wide range of structures, including pump stations, wet wells, plant influent structures, sedimentation tanks and many varieties of conveyance structures within the conveyance and treatment systems of every large city in the world. Most wastewater corrosion protection has become ineffective since large cities began enclosing their collection and treatment structures in the 1970's. Although the problem is essentially a biological problem, the main failings of the systems used for wastewater corrosion protection can be reduced to 2 main issues with liquid applied coatings and grouts, and mechanically anchored liners.

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H₂S Corrosion Mechanism

Wastewater corrosion protection is a major problem for municipalities worldwide. Every year, hundreds of millions of dollars are lost to wastewater concrete corrosion and the failure of H2S corrosion protection on a very wide range of structures, including pump stations, wet wells, plant influent structures, sedimentation tanks and many varieties of conveyance structures within the conveyance and treatment systems of every large city in the world. Most wastewater corrosion protection has become ineffective since most large cities began enclosing their collection and treatment structures in the 1970's. Although the problem is essentially a biological problem, the main failings of the systems used for wastewater corrosion protection can be reduced to 2 main issues with liquid applied coatings and grouts, and mechanically anchored liners.

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Why Do Perfectly Good Coatings Fail in Wastewater?

Wastewater coatings typically do not fail because of their chemical makeup, but rather due to the environmental conditions, which are inherent in working on wastewater structures in an H2S corrosion protection application. Those conditions are constantly changing, minute by minute, as the substrate "breathes" vapor and corrosives through the liquid applied coating. The coating itself may be very well-designed, but the coating design cannot change the environment in which it must be applied. Usually, the contractor has a great deal of difficulty controlling this environment as well. The resulting wastewater concrete corrosion develops behind the wastewater coating system due to permeability that is inherent in the application method, rather than contractor error or faulty coating materials. Liquid applied materials rank very poorly as H2S corrosion protection due primarily to this problem.

Why Do Mechanically Anchored Liners Fail? (Part 1)

Mechanically anchored liners fail primarily because they are intermittently fastened. Because of this fact, they cannot prevent lateral migration of gases and corrosives behind the liner in case of a puncture or a failed seam. Once the liner is breached, the entire substrate is exposed to microbial induced corrosion, including the areas where the liner fastening mechanisms are located. To make matters worse, the breached anchored liner masks the corrosion process taking place on the substrate, until eventually a catastrophic liner failure occurs, and severe structural damage has occurred. The breached liner also serves to protect the thiobacillus bacteria growing on the substrate from being washed off by the sewer flow, thus accelerating the corrosion process. Additionally, due to the fact that they are intermittently fastened, mechanically anchored liners cannot prevent ground water infiltration and sewage exfiltration from occurring in wastewater structures.

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Why Do Mechanically Anchored Liners Fail? (Part 1)

Mechanically anchored liners fail primarily because they are intermittently fastened. Because of this fact, they cannot prevent lateral migration of gases and corrosives behind liner in case of a puncture or a failed seam. Once the liner is breached, the entire substrate is exposed to microbial induced corrosion, including the areas where the liner fastening mechanisms are located. To make matters worse, the breached anchored liner masks the corrosion process taking place on the substrate, until eventually a catastrophic liner failure occurs, and severe structural damage has occurred. The breached liner also serves to protect the thiobacillus bacteria growing on the substrate from being washed off by the sewer flow, thus accelerating the corrosion process. Additionally, due to the fact that they are intermittently fastened, mechanically anchored liners cannot prevent ground water infiltration and sewage exfiltration from wastewater structures.

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Why Do Mechanically Anchored Liners Fail? (Part 2)

The most important difference between mechanically anchored liners and Linabond® Co-Liners™ is that, while the former are only attached to the substrate at a few discrete points (i.e. mostly unattached), the later are continuously bonded over the entire substrate (i.e. mostly attached). Because of this fact, not only do Linabond® Co-Liners™ continue to protect the substrate against corrosion in case of a puncture or a seam breach, but they also prevent ground water infiltration/inflow and sewage exfiltration from occurring in wastewater infrastructure.

How Do Co-Liners™ Work?

Linabond® Co-Liners™ provide the highest degree of wastewater H₂S corrosion protection available for both new construction and rehabilitation of existing wastewater structures, which have been damaged or even destroyed by hydrogen sulfide corrosion. They are a sandwich composite approach, which combines the highest fastening strength of any wastewater anchored liner, with the backup protection necessary to keep the PVC liner a permanent part of the structure. Wastewater PVC liners have been recognized for many years as the only way to ensure a reliable impermeable membrane for wastewater structures. Linabond® Co-Liners are the ultimate wastewater PVC liners due to the fact that they have the highest fastening strength of any wastewater PVC liner in the world, as well as backup protection in the event of a puncture.

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How Do Co-Liners™ Work?

Linabond® Co-Liners™ provide the highest degree of wastewater H₂S corrosion protection available for both new construction and rehabilitation of existing wastewater structures, which have been damaged or even destroyed by hydrogen sulfide corrosion. They are a sandwich composite approach, which combines the highest fastening strength of any wastewater anchored liner, with the backup protection necessary to keep the PVC liner a permanent part of the structure. Wastewater PVC liners have been recognized for many years as the only way to ensure a reliable impermeable membrane for wastewater structures. Linabond® Co-Liners are the ultimate wastewater PVC liners due to the fact that they have the highest fastening strength of any wastewater PVC liner in the world, as well as backup protection in the event of a puncture.

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Field Inspection and Reporting

Public Works Agencies, Engineering Firms and Contractors need absolutely current information on their projects. Public Works Projects are generally extremely expensive, and many Agencies have expressed their support for more extensive and more current documentation on their projects. Without documented oversight, project costs can quickly soar out of control.

Extranet Project Management

Accountability in our Public Works, on a daily basis, has been a concern of many Public Works Agencies and Linabond has responded by providing Internet Project Management that is available 24 hours every day via the Internet. The documentation is extensive, providing information in multiple media formats so that Contractors as well as Public Works Agencies can access their projects from their desktops. The approach has proven ideal for difficult projects involving wastewater corrosion, wastewater structure protection, wastewater pipeline protection and wastewater pipeline rehabilitation.

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Extranet Project Management

Accountability in our Public Works, on a daily basis, has been a concern of many Public Works Agencies and Linabond has responded by providing Internet Project Management that is available 24 hours every day via the Internet. The documentation is extensive, providing information in multiple media formats so that Contractors as well as Public Works Agencies can access their projects from their desktops. The approach has proven ideal for difficult projects involving wastewater corrosion, wastewater structure protection, wastewater pipeline protection and wastewater pipeline rehabilitation.

Corrosion Protection, Structural Rehabilitation and Containment

Founded in 1984, Linabond Inc. is the world's leading designer and supplier of Co-Lining™ systems for corrosion protection, structural rehabilitation and contaiment of municipal wastewater infrastructure.

Linabond Co-Lining™ Systems

SP Mastic Co-Lining™ System

Linabond Co-Lining™ Systems are ideal for corrosion protection and gas and liquid containment of wastewater treatment plants and collection systems - both for new construction and rehabilitation.

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Pipeline Structural Polymer Co-Lining™ System

Linabond Pipeline Structural Polymer Co-Lining™ System for pipes, tunnels, pump stations, manholes, junction boxes and other wastewater infrastructure that require fast structural rehabilitation, corrosion protection and containment without bypassing flows.

Structural Rehabilitation

Corroded and failed steel-reinforced concrete structural rehabilitation with Linabond® Structural Polymer composite systems.

Partial Project History

Over 30 years of project history.

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