Pack Rust/Crevice Corrosion on Riveted Steel Girders

[WJA]

Hello!

I'm looking for more information on how to address pack rust/crevice corrosion between flange plates on built up riveted steel bridge girders. I found the post at the link below and I'm wondering if people have any further experience to share.

http://www.eng-tips.com/viewthread.cfm?qid=323636

A bit of research leads me to consider a calcium sulfonate product to treat the pack rust specifically (e.g.

http://www.termarust.com/).

Does anyone have experience with this treatment, and its limitations? The only information I can seem to find regarding this treatment is promotional material.

 

[WJA]

Further to above: any comments on this approach:

https://www.dot.ny.gov/spec-repository-us/564.21010011.pdf

(i.e. power tool cleaning, apply epoxy penetrating sealer, and caulk)

vs.

http://www.termarust.com/resources/tp1.php

(i.e. pressure wash and blow dry, apply calcium sulfonate penetrant and topcoat)

Any help on this topic is much appreciated!