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Chloride Removal: Using ‘Recyclable Encapsulated Abrasive Media

Product Number: 41210-554-SG

Author: Michael Merritt

Publication Date: 2010

$20.00

This paper presents results of multiple test programs that have been performed to determine the effectiveness of recyclable encapsulated abrasive media to remove chlorides during surface preparation. Tests published in 2002 concluded that this technology consistently achieves significant reductions of chloride levels in comparison to those achieved with conventional abrasive blasting.

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Investigation on the Mechanism of Corrosion Inhibitors by Contact Angle and Surface Tension

Product Number: 51324-21173-SG

Author: Ru Jia; Duy Nguyen; Boyd Laurent; Jeremy Moloney

Publication Date: 2024

$40.00

Corrosion is common, costly and a prevalent industrial problem in the oil and gas industry. Corrosion inhibitors, which are surfactant-like molecules, adsorb on the metallic surface of a pipe to form a barrier film that inhibits interactions of the pipe surface with corrosive species. Despite the prominence of surfactants as corrosion inhibitors, their adsorption behavior inside a pipeline is not well understood. In this study, continuous corrosion inhibitors were evaluated to correlate corrosion performance testing with contact angle and surface tension studies. Contact angle method was employed in corrosion inhibition studies for surface characterization. Surface tension method was used to determine critical micelle concentration. Contact angle results showed that for the water-soluble continuous corrosion inhibitors such as quaternary ammonium and imidazoline, a monolayer and bilayer were formed on the metal surface as reflected by an increase and then decrease in contact angle. The bilayer further increased the corrosion inhibition efficiency until the critical micelle concentration (CMC) was reached for quaternary ammonium and imidazoline only. However, the mixed quaternary ammonium and imidazoline in the formulation resulted in the maximum contact angle value being at its CMC indicating a compact monolayer formation. The results can provide a helpful guideline for further studying the synergistic effect of corrosion inhibitor mixtures.

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Cathodic Protection Retrofit for Rehabilitation of Aging Reinforced Concrete Municipal Water Infrastructure: A Case Study

Product Number: 51319-13002-SG

Author: Mersedeh Akhoondan

Publication Date: 2019

$20.00

Reinforced concrete towers in a water reservoir contain gates and the equipment to control the water entering the system. Any interruption in the operation of these towers may cause a huge disruption in the municipal water distribution system. Continuous operation in an aggressive environment often contributes to corrosion of aging water infrastructure. A failure due to corrosion would necessitate extensive repair or replacement costs and unacceptable system downtime. This paper presents a case study focused on a comprehensive condition assessment and corrosion mitigation of an aged forebay outlet tower in Southern California. The inspected tower - in operation since 1941 - is a crucial structure in a water distribution system serving most of the 19 million people in Southern California. The tower illustrated significant concrete deterioration and corrosion of the reinforcement above the operating water surface elevation. An impressed current cathodic protection (ICCP) system was designed and installed on the tower to extend the life of the structure. Field activities and ICCP installation were dictated by restricted shutdown schedules and operational constraints. The paper addresses the methodology for condition assessment and cathodic protection design as well as challenges encountered due to schedule/operational constraints.

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99551 A Galvanic Zinc-Hydrogel System For Cathodic Protection Of Reinforced Concrete Structures

Product Number: 51300-99551-SG

ISBN: 99551 1999 CP

Author: J.E. Wehling

$20.00

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00794 EIS MEASUREMENTS ON CATHODICALLY PROTECTED STEEL IN CONCRETE

Product Number: 51300-00794-SG

ISBN: 00794 2000 CP

Author: M.A. Talavera, T. Perez and J. Genesca

$20.00

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Time-To-Corrosion Initiation of Chloride Exposed Reinforced Concrete Considering Time Dependence of the Diffusion Coefficient

Product Number: 51314-3637-SG

ISBN: 3637 2014 CP

Author: William Hartt

Publication Date: 2014

$0.00

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Understanding Concrete Crack Repair: Simplifying the Complex Matrix of Solutions

Product Number: 51217-031-SG

Author: Warren Brand

Publication Date: 2017

$20.00

Understanding when and how to repair, or not repair, cracks in concrete is of fundamental importance to all corrosion mitigation and coating professionals.