Powder coating metallic surfaces for corrosion protection and aesthetic purposes has grown by leaps and bound in the United States and more so in other parts of the world. The use of powder coating on aluminum and steel shee...
When all coats of a paint system are applied to bridge steel in an enclosed shop, the quality of the cleaning and painting is typically quite good. The steel is blast cleaned and painted in a controlled environment, minimizing or...
Steel beams used for bridge and highway structures are frequently curved to accommodate the design of a structure. This can be accomplished by cambering or sweeping. Cambering is the curving of a beam about the strong axis of the ...
Introduction The installation of thermal spray coatings (TSC) or metalized coatings is becoming more common for protection of new and existing structural steel members on locks & dams, bridges, tanks and other industrial struc...
There are several methods by which a coating can protect steel from corrosion. One of the most effective methods is by providing galvanic protection. Galvanic protection works by covering the steel surface with a metal that will ...
The following is a guideline for witnessing and verifying qualification testing of Welding Procedure Specifications (WPS) according to the AASHTO/AWS D1.5-2015 Bridge Welding Code. The guidelines identify what the third-party insp...
When steel is shop-painted, it is usually primed with a zinc coating, and the remaining coat(s)applied to all surfaces except the top of top flanges that will be embedded in concrete. If shear studs will be installed in the top f...
Introduction Surface profile is defined as a measurement of the maximum peak-to-valley depth generated by abrasive blast cleaning and impact-type power tools. These operations effectively increase the surface area and provide an “...
This Month’s Case Was Selected From Several Investigations Related To Failures That Occur When Applying Coating To The Underside Of Metal Deck Panels (Fig. 1). This Case Focuses On An Adhesion Failure Of Coatings Applied To Previo...
Galvanizing presents many challenges to painting operations. While the zinc coating can add substantial life to steel surfaces, its surface chemistry and electrochemical activity can result in conditions leading to adhesion failur...
