Electrolytic restoration of concrete

Electrolysis: processes – compositions used therein – and methods – Electrolytic material treatment – Metal or metal alloy

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205739, C23F 1300

Patent

active

060276339

ABSTRACT:
An electrolytic restoration of concrete includes an anode positioned at a surface of the concrete to be restored and the communication of a current from the anode to the reinforcing bars in the concrete as a cathode. The anode is in the presence of or carries an electrolyte so that sufficient current is provided temporarily over a sufficient period of time so that ions from the concrete are carried through the concrete and expelled into the electrolyte for extraction. The anode is provided by layer of conductive material which is particulate or fibrous so that it is an amorphous layer which can therefore follow the surface of the concrete. In a horizontal arrangement, the layer can be applied directly onto a felt mat for carrying electrolyte. In a vertical orientation an initial layer of chopped cellulose is wetted and applied onto the vertical surface followed by the same layer carrying carbon powder so that the layer is conductive and forms the anode when connected to metal connector plates buried in the anode layer.

REFERENCES:
patent: 5141607 (1992-08-01), Swiat
patent: 5228959 (1993-07-01), Miller
patent: 5296120 (1994-03-01), Bennett et al.
patent: 5312526 (1994-05-01), Miller
patent: 5650060 (1997-07-01), Huang et al.
Norcure brochure "Is Salt Induced Corrosion Causing Problems with your Concrete Structures?" no month/year Available.
Vector brochure "The Concrete Restoration and Protection Specialists" no month/year Available.
Norcure brochure "Changing the face of concrete repair" no month/year available.

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