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:
Apr. 18, 1995
Filed:
Feb. 28, 1994
John B Miller, 1087 Oslo 10, NO;
Other;
Abstract
A process for rehabilitation of internally reinforced concrete which comprises applying to surface areas of the concrete a temporary sprayed-on layer of a self-adherent, electrolytic material comprised of cellulosic pulp fiber mixed with liquid electrolyte. A distributed electrode means, preferably a wire grid, is embedded between layers of the self-adherent coating, and preferably is supported by spaced-apart, non-conductive battens. Voltage sufficient to develop a current of about 1-5 amps/m.sup.2 is applied between the reinforcement and the distributed electrode, to cause migration of chloride ions from the concrete into the electrolytic coating. When the chloride content of the concrete has been reduced to a desired level, the voltage is discontinued and the adherent electrolytic coating and distributed electrode are removed. Preferred electrolytes include water or other solutions, such as calcium hydroxide. Desirably, the distributed electrode is formed of a ferrous material reactive with chlorine, to minimize the release of free chlorine gas into the ambient.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile