Detection of exposed steel in the surface of reinforced concrete
US5084680A · kind A · utility
6Cited by
5References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 18, 1990 |
| Grant date | Jan 28, 1992 |
| Priority date | — |
| Expiry date | Apr 18, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/205
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for detecting exposed steel in the surface of reinforced concrete, comprising the steps of: moving an electrode across an exposed surface of said concrete; connecting said electrode to one terminal of a power source; connecting the other terminal of said power source to the reinforcement of said concrete; said power source providing a high voltage current effective to produce a spark across an air gap occurring when exposed steel is detected, said spark initiating a means to signal the occurrence of said exposed steel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.