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. 10, 1990
Filed:
Dec. 02, 1985
Nippon Steel Corporation, Tokyo, JP;
Abstract
A high-purity reinforcing steel resistant to salt and capable of preventing deterioration of concrete substantially completely over a long period when the salt content of the concrete is not greater than 0.5 wt % in terms of Nacl amount in the sand of concrete. The reinforcing steel essentially consists of 0.001 to 1.0 wt % of C, less than 0.01 wt % of Si, 0.01 to 2.0 wt % of Mn, less than 0.015 wt % of P, less than 0.005 wt % of S, 0.01 to 0.5 wt % of Cu, 0.01 to 0.5 wt % of W, 0.001 to 0.10 wt % of Al and the balance Fe and incidental impurities. Disclosed also is another reinforcing steel capable of remarkably retarding deterioration of concrete even under such a severe corrosive condition that the salt content of the concrete exceeds 0.5 wt % in terms of Nacl amount in the same of concrete. This reinforcing steel essentially consists of 0.001 to 1.0 wt % of C, not greater than 0.05 wt % of Si, 0.01 to 2.0 wt % of Mn, less than 0.015 wt % of P, less than 0.005 wt % of S, 1.0 to 5.5 wt % of Ni, 0.001 to 0.5 wt % of W, 0.001 to 0.1 wt % of Al and the balance Fe and incidental impurities.