PaintSquare.com


The First Word in Protective & Marine Coatings

A Product of Technology Publishing / PaintSquare
JPCL | PaintSquare News | Durability + Design | Paint BidTracker


G95 Standard Test Method for Cathodic Disbondment Test of Pipeline Coatings (Attached Cell Method)

All Standards | ASTM Standards
Search Standards


Click to Purchase and Download this Standard or Test Method

Revision Date: July 08, 2013
Updated On: July 10, 2013
Editorial Change:
 
4.1 Damage to pipe coating is almost unavoidable during transportation and construction. Breaks or holidays in pipe coatings may expose the pipe to possible corrosion since, after a pipe has been installed underground, the surrounding earth will be moisture-bearing and will constitute an effective electrolyte. Applied cathodic protection potentials may cause loosening of the coating, beginning at holiday edges. Spontaneous holidays may also be caused by such potentials. This test method provides accelerated conditions for cathodic disbondment to occur and provides a measure of resistance of coatings to this type of action.

4.2 The effects of the test are to be evaluated by physical examinations and monitoring the current drawn by the test specimen. Usually there is no correlation between the two methods of evaluation, but both methods are significant. Physical examination consists of assessing the effective contact of the coating with the metal surface in terms of observed differences in the relative adhesive bond. It is usually found that the cathodically disbonded area propagates from an area where adhesion is zero to an area where adhesion reaches the original level. An intermediate zone of decreased adhesion may also be present.

(Back to all Standards)

 
   

International Paint LLC

International Paint Engineered Coatings

Learn about our solutions for:
  • Structural Steel
  • Piping & Equipment
  • Storage Tanks
  • Pressure Vessels
  • Secondary Containment


    Sherwin-Williams
    Nova-Plate® 325

    • Extends Service Life
    • Single Coat Application
    • Cure to Service in 24 Hours


    SAFE Systems, Inc.
    SAFE Systems'
    Blast Lights &
    Deadman Switches

    Halogen or LED blast lights available with our NEW urethane bumper. Switches available in many colors for color coding your hoses.


    GMA Garnet USA
    GMA Garnet™
    Natural Abrasives

    - Superior cleaning
      performance
    - Even Profile
    - Low Dust
    - Cost-Effective
    - Environmentally friendly
    - Recyclable up to 5 times
    Tel : +1 832 243 9300


    Spider, a Division of SafeWorks, LLC
    Spider’s Competent Person Training

    What will Spider’s CPT class do for you?
    • OSHA compliance
    • Increased productivity
    • Improved safety
       awareness
    • Fewer accident-related
       costs
    Call 877-774-3370 or click for classes near you.


    Wasser High-Tech Coatings Inc.
    Wasser Coatings Protect

    some of the most important bridges in the country; learn about our NEPCOAT-approved system and our entire range of MCU & Polyurea coatings. 1-800-627-2968 www.wassercoatings.com


    Dampney Co., Inc.
    Rubber In a can!

    Rubberized Spray in a
    Handy Aerosol Can

    • Stays flexible
    • Seals off moisture penetration
    • Non sagging formulation
    • Will not crack, chip or peel
    • Apply to wet and dry surfaces
    • Paintable

  •  
     
     
    Technology Publishing

    The Technology Publishing Network

    The Journal of Protective Coatings & Linings (JPCL) PaintSquare
    Durability + Design Paint BidTracker JPCL Europe

     
    EXPLORE:      JPCL   |   PaintSquare News   |   Interact   |   Buying Guides   |   Webinars   |   Resources   |   Classifieds
    REGISTER AND SUBSCRIBE:      Free PaintSquare Registration   |   Subscribe to JPCL   |   Subscribe to PaintSquare News
    MORE:      About PaintSquare.com   |   Privacy policy   |   Terms & conditions   |   Site Map   |   Search   |   Contact Us
     

    © Copyright 2000-2014, Technology Publishing / PaintSquare, All rights reserved
    2100 Wharton Street, Suite 310, Pittsburgh PA 15203-1951; Tel 1-412-431-8300; Fax 1-412-431-5428; E-mail webmaster@paintsquare.com