Bill D
Diamond
- Joined
- Apr 1, 2004
- Location
- Modesto, CA USA
last night on the History Channel I saw the tail end of a special on Highway 101 on the Pacific coast.(repeats saturday 11:00?). they showed rust prooffing a old concrete bridge. I think it was over the Rouge River in Oregon. They explaine dproblen is water rusts the rebar and it spalls the concrete. So they knock off any spalling concrete and claen it all up. Then they use wire fed zinc plasma guns to coat the concrete with molten zinc 15-60mils thick. Conect it electrically and the rebar is protected fo 20-50 years or so. Just like hot dip galvanising I guess. Also showed another concrete bridgre that used stainless steel rebar and water proff cement.
Bill D.
Bill D.