In situ sensor for critical corrosion conditions in a material
US5895843A · kind A · utility
26Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 15, 1997 |
| Grant date | Apr 20, 1999 |
| Priority date | — |
| Expiry date | May 15, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N17/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An in situ sensor for monitoring the degree of corrosion of rebar in a concrete structure relies on a four-point resistance measure of a test wire embedded in the concrete structure. The resistance across the wire is compared with the resistance of a reference wire, which is corrosion resistant. As corrosion advances, the cross-sectional area of the wire decreases, effectively increasing the resistance measured. The sensor may be used to measure corrosion inhibitor performance, and the effect of dilution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.