Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Cathodic Protection of Bridge Decks in Pennsylvania
This report presents discussion of the types of bridge deck cathodic systems currently being evaluated in Pennsylvania. The systems are: (1) an impressed current system utilizing a two-inch conductive coke-asphalt and a two-inch hot asphalt wearing surface, with eight zones controlled by zinc reference cells and each zone having four silicon-cast iron anodes; (2) a non-overlay, impressed current system utilizing 1/2-inch by 3/4-inch slots at two-foot spacing longitudinally with platinized niobium copper anode wires and conductive grout placed in the slots; six zones are controlled by zinc reference cells; (3) a non-overlay, constant current system where the total deck is one zone and the current the same throughout; sawed slots, 3/4-inch by 3/4-inch are placed on one-foot centers longitudinally with high purity carbon strand as secondary anodes; three transverse slots contain the platinized wires as primary anodes; this electrically redundant system has the slots filled with conductive grout; and (4) strips of conductive grout are spread over transverse primary anode and one-foot spaced carbon strands on a patched and scarified deck. A latex-modified concrete overlay is provided as a wearing surface.
Cathodic Protection of Bridge Decks in Pennsylvania
This report presents discussion of the types of bridge deck cathodic systems currently being evaluated in Pennsylvania. The systems are: (1) an impressed current system utilizing a two-inch conductive coke-asphalt and a two-inch hot asphalt wearing surface, with eight zones controlled by zinc reference cells and each zone having four silicon-cast iron anodes; (2) a non-overlay, impressed current system utilizing 1/2-inch by 3/4-inch slots at two-foot spacing longitudinally with platinized niobium copper anode wires and conductive grout placed in the slots; six zones are controlled by zinc reference cells; (3) a non-overlay, constant current system where the total deck is one zone and the current the same throughout; sawed slots, 3/4-inch by 3/4-inch are placed on one-foot centers longitudinally with high purity carbon strand as secondary anodes; three transverse slots contain the platinized wires as primary anodes; this electrically redundant system has the slots filled with conductive grout; and (4) strips of conductive grout are spread over transverse primary anode and one-foot spaced carbon strands on a patched and scarified deck. A latex-modified concrete overlay is provided as a wearing surface.
Cathodic Protection of Bridge Decks in Pennsylvania
R. Turgeon (Autor:in)
1984
45 pages
Report
Keine Angabe
Englisch
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