JPS6425050A - Deterioration judging method of reinforced concrete construction - Google Patents
Deterioration judging method of reinforced concrete constructionInfo
- Publication number
- JPS6425050A JPS6425050A JP17990987A JP17990987A JPS6425050A JP S6425050 A JPS6425050 A JP S6425050A JP 17990987 A JP17990987 A JP 17990987A JP 17990987 A JP17990987 A JP 17990987A JP S6425050 A JPS6425050 A JP S6425050A
- Authority
- JP
- Japan
- Prior art keywords
- distribution graph
- resistivity
- measured
- reinforced concrete
- concrete construction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE:To make it possible to find and estimate the indication of the deterioration in a reinforced concrete construction at an early period accurately, by overlapping the distribution graph of natural potential and the distribution graph of resistivity, thereby judging the corroded area of reinforcing steel. CONSTITUTION:One terminal of a potentiometer 1 is connected to a steel piece (m) in a reinforced concrete construction M through a conductor 2. The other terminal thereof is connected to a reference electrode 3. Then, the reference electrode 3 is brought into contact with each measuring point, and the average natural potential (value obtained by averaging the measured potentials in a typical range) of all the measuring points is measured, and the potential distribution graph is formed. Resistivities are obtained as follows: four electrodes 5 are inserted in the surface layer part of the concrete surface (n), where the natural potential is measured; AC is conducted across the electrodes on both sides; a voltage across the two inner electrodes is measured; and the resistivity is obtained. A resistivity distribution graph is formed based on the result. It can be determined that the distribution graph of the part, where the corroding range of reinforcing steel in the potential distribution graph is overlapped on the corroding range of the steel in the resistivity graph, is the corroding region, where breakdown strength of the reinforcing steel is decreased.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62179909A JP2535177B2 (en) | 1987-07-21 | 1987-07-21 | Deterioration determination method for reinforced concrete structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62179909A JP2535177B2 (en) | 1987-07-21 | 1987-07-21 | Deterioration determination method for reinforced concrete structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6425050A true JPS6425050A (en) | 1989-01-27 |
| JP2535177B2 JP2535177B2 (en) | 1996-09-18 |
Family
ID=16074032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62179909A Expired - Fee Related JP2535177B2 (en) | 1987-07-21 | 1987-07-21 | Deterioration determination method for reinforced concrete structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2535177B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011180118A (en) * | 2010-02-05 | 2011-09-15 | Tobishima Corp | Concrete filling state inspecting method |
| JP2014218887A (en) * | 2013-04-09 | 2014-11-20 | 東日本高速道路株式会社 | Unit instrument support and movement system in narrow expansion gap part |
| JP2018017517A (en) * | 2016-07-25 | 2018-02-01 | 株式会社Ｎｔｔファシリティーズ | Corrosion degree estimation method, corrosion degree estimation device and program |
| JP2018017518A (en) * | 2016-07-25 | 2018-02-01 | 株式会社Ｎｔｔファシリティーズ | Corrosion degree estimation method, corrosion degree estimation device and program |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6598230B2 (en) * | 2014-04-30 | 2019-10-30 | 国立研究開発法人物質・材料研究機構 | Desalination and realkalization of existing concrete |
| JP6618212B2 (en) * | 2018-03-13 | 2019-12-11 | 国立研究開発法人物質・材料研究機構 | Desalination treatment system for concrete, realkalization treatment system, and salinity sensor and pH sensor used therefor |
-
1987
- 1987-07-21 JP JP62179909A patent/JP2535177B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011180118A (en) * | 2010-02-05 | 2011-09-15 | Tobishima Corp | Concrete filling state inspecting method |
| JP2014218887A (en) * | 2013-04-09 | 2014-11-20 | 東日本高速道路株式会社 | Unit instrument support and movement system in narrow expansion gap part |
| JP2018017517A (en) * | 2016-07-25 | 2018-02-01 | 株式会社Ｎｔｔファシリティーズ | Corrosion degree estimation method, corrosion degree estimation device and program |
| JP2018017518A (en) * | 2016-07-25 | 2018-02-01 | 株式会社Ｎｔｔファシリティーズ | Corrosion degree estimation method, corrosion degree estimation device and program |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2535177B2 (en) | 1996-09-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |