Celebrate World Corrosion Awareness Day with 20% off eCourses and eBooks with code WCAD2024 at checkout!
The intention of the study is to explore potential field maintenance products with service temperature ranges of 0 to 65°C for patch application, including patch repairing and to provide corrosion protection for irregularly shaped components, such as fittings and electrical connection to pipe (e.g., cadweld). Viscoelastic materials were selected as potential candidates due to their inherent features of cold-flow capability, low water permeability, easy application (by hand and directly applied to surface), and compatibility with a variety of existing pipeline coatings.
The intention of the study is to explore potential field maintenance products with service temperature ranges of 0 to 65°C for patch application, including patch repairing and to provide corrosion protection for irregularly shaped components, such as fittings and electrical connection to pipe (e.g., cadweld). Viscoelastic materials were selected as potential candidates due to their inherent features of cold-flow capability, low water permeability, easy application (by hand and directly applied to surface), and compatibility with a variety of existing pipeline coatings. Phase 1 of the study on comparative evaluation of four viscoelastic materials showed that water absorption and cathodic disbondment of the viscoelastic materials vary from product to product. This paper focuses on phase 2 of the study. All investigations were carried out on a selected viscoelastic material from the phase 1 study. The aim of this study was to further explore if the selected material could fulfill its potential by comparing performance of the material in paste/mouldable compound and tape forms and determining a proper level of surface preparation that is not only efficient, cost-effective and practical for field patch application, but also provides the long-lasting performance. Ultimately, the insights into the consideration and selection of suitable viscoelastic materials for the intended applications are presented and a new approach for a viscoelastic patch system is proposed.
In our world of protective coatings, water usually seems to cause trouble. In relation to coating concrete - determining how wet the manhole structure is paramount in our struggle to rehabilitate these manholes. And we are not talking about the manholes used to contain water during heavy rains or floods, strictly the sanitary manholes. A few ASTM test methods are important tools.
We are unable to complete this action. Please try again at a later time.
If this error continues to occur, please contact AMPP Customer Support for assistance.
Use this error code for reference:
Please login to use Standards Credits*
* AMPP Members receive Standards Credits in order to redeem eligible Standards and Reports in the Store
You are not a Member.
AMPP Members enjoy many benefits, including Standards Credits which can be used to redeem eligible Standards and Reports in the Store.
You can visit the Membership Page to learn about the benefits of membership.
You have previously purchased this item.
Go to Downloadable Products in your AMPP Store profile to find this item.
You do not have sufficient Standards Credits to claim this item.
Click on 'ADD TO CART' to purchase this item.
Your Standards Credit(s)
1
Remaining Credits
0
Please review your transaction.
Click on 'REDEEM' to use your Standards Credits to claim this item.
You have successfully redeemed:
Go to Downloadable Products in your AMPP Store Profile to find and download this item.
With more stringent silica regulations being enforced, wet abrasive blasting is becoming more prevalent in the industry. We investigated the viability of wet abrasive blasting as compared to the more commonly used dry abrasive blast. One added benefit of wet abrasive blasting is the removal of soluble salts in addition to providing the specified profile.
Aromatic polyurethane coatings are often used in the protection of steel water pipelines from corrosion. Unfortunately, pipeline sections may be stored above ground for many months before installation so the coatings yellow, lose gloss and can chalk. This deterioration in appearance naturally creates doubt about the corrosion protective qualities of the coatings.