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We have re-decked some of the big bridges that link Manhattan and Long Island to the rest of the world....
Basically removed the old composite road surface, and tried to replace it with a lighter orthotropic floor system..
In some case its worked beyond expectations, in others not so much..
Having said that we have specified thin wearing surfaces i.e. 3/8 max thickness epoxy overlays..
These have fillers of fine Basalt... (as manufactured to spec by Tamms, Transpo,Euclid, etc.)
As with any overlay or surface treatment.... the most important thing for success is surface prep...
No matter what product you chose... proper surface prep will be the key to success...
Sorry for sounding like an infomercial.... This is some something I know a little about
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