Apparatus for forming corrosion protection coatings on prestress

Details Apparatus for forming corrosion protection coatings on prestress Apparatus for forming corrosion protection coatings on prestress

1993-04-14

1994-11-08

Jones, W. Gary

Coating apparatus

With means to deform work

118 33, 118308, 118325, 118DIG22, 57 1UN, 57221, B05C 1300

Patent

active

053623266

ABSTRACT:
Disclosed is a method of forming corrosion protection coatings on prestressing strands. It comprises the steps of untwisting sequential lengths of a prestressing strand; keeping the surrounding steel wires apart from the core steel wire to coat these steel wires with a synthetic resin; and twisting the coated steel wires to provide a prestressing strand of the original shape, thus permitting the separate coating of each steel wire, leaving, on the prestressing strand surface, the helical dent as deep and wide as the noncoated prestressing strand to assure the bond of the twisted wire to the surrounding concrete as firm as the noncoated prestressing strand. Also, an apparatus for carrying out such coating method is disclosed.

REFERENCES:
patent: 3334357 (1967-09-01), Marzocchi et al.
patent: 3972304 (1976-08-01), Boucher
patent: 4205515 (1990-06-01), Garner
patent: 5208077 (1993-05-01), Proctor et al.
patent: 5263307 (1993-11-01), Hasui

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