We explore various methods of testing an IOZ primer for cure prior to overcoating. Inorganic zinc-rich primers are used on newly fabricated steel in the shop and frequently dry very quickly but may not cure for days unless there is sufficient airborne moisture available to react with the ethyl silicate binder.
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 member, while, sweep applies to the curving of a member about the weaker axis. Cambering is …
Cambering: Cold Versus Heat for Steel Bridge Beams Read More »
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 flanges after painting, it is often questioned whether the paint must be removed prior to …