The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 25, 1992
Filed:
Jul. 31, 1990
Wayne J Swiat, Homerville, OH (US);
Corrpro Companies, Inc., Medina, OH (US);
Abstract
A method and apparatus for the removal of chlorides from steel reinforced concrete utilizes an electrode with a rectifier impressing a voltage between the steel of the concrete and the electrode. The electrode and the surrounding concrete are saturated continuously with a controlled flow of an aqueous electrolyte. The aqueous electrolyte which may be water or salt water increases chloride movement within the concrete away from the steel reinforcing and improves the efficiency of the process by maintaining a saturated pore structure within the concrete. To facilitate such saturation of the concrete and electrode, the electrode may be immersed in a matrix of a porous water absorbing medium contained within a non-metallic membrane or jacket cover. In some forms, a collecting bin or reservoir is provided at the bottom to collect the aqueous solution for recirculation. For offshore or other installations, no collecting reservoir may be required. The aqueous solution may also be obtained from a continuous expendable supply. The electrode, porous medium and membrane jacket cover, with or without the collecting reservoir, is provided in a preassembled reusable package. The assembly may readily be transported and mounted to or dismounted from the concrete structure.