Corrosion measurements of steel reinforcement in concrete exposed to a tropical marine atmosphere
As part of a broad research program, reinforced concrete cylinders of different qualities were exposed to the marine atmosphere of North Peninsula of Yucatán. The cylinders were electrochemically monitored over a period of 56 months. The time for the onset of active corrosion was shorter for rebars...
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| Veröffentlicht in: | Cement and concrete research 2002-03, Vol.32 (3), p.491-498 |
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| container_title | Cement and concrete research |
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| creator | Pech-Canul, M.A Castro, P |
| description | As part of a broad research program, reinforced concrete cylinders of different qualities were exposed to the marine atmosphere of North Peninsula of Yucatán. The cylinders were electrochemically monitored over a period of 56 months. The time for the onset of active corrosion was shorter for rebars in concretes with a high water-to-cement (w/c) ratio compared to that for rebars in low w/c ratio concrete. Results also indicate, as expected, that for equal periods of exposure, nominal corrosion current density (icorr) values were generally higher for rebar in concrete with higher w/c ratio than those for rebar in low w/c ratio concrete. Analysis of the observed impedance spectra in terms of a modified Randles circuit (in which the ideal capacitor is replaced by a constant phase element (CPE)) appeared to be a reasonable approximation. |
| doi_str_mv | 10.1016/S0008-8846(01)00713-X |
| format | Article |
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The cylinders were electrochemically monitored over a period of 56 months. The time for the onset of active corrosion was shorter for rebars in concretes with a high water-to-cement (w/c) ratio compared to that for rebars in low w/c ratio concrete. Results also indicate, as expected, that for equal periods of exposure, nominal corrosion current density (icorr) values were generally higher for rebar in concrete with higher w/c ratio than those for rebar in low w/c ratio concrete. Analysis of the observed impedance spectra in terms of a modified Randles circuit (in which the ideal capacitor is replaced by a constant phase element (CPE)) appeared to be a reasonable approximation.</description><identifier>ISSN: 0008-8846</identifier><identifier>EISSN: 1873-3948</identifier><identifier>DOI: 10.1016/S0008-8846(01)00713-X</identifier><identifier>CODEN: CCNRAI</identifier><language>eng</language><publisher>New York, NY: Elsevier Ltd</publisher><subject>Applied sciences ; Building structure ; Buildings. Public works ; Chlorides ; Concretes. Mortars. Grouts ; Construction (buildings and works) ; Corrosion ; Corrosion rate ; Durability. Pathology. Repairing. Maintenance ; Electrochemical impedance ; Exact sciences and technology ; Hydraulic constructions ; Materials ; Polarization resistance ; Port facilities and coastal structures. 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The cylinders were electrochemically monitored over a period of 56 months. The time for the onset of active corrosion was shorter for rebars in concretes with a high water-to-cement (w/c) ratio compared to that for rebars in low w/c ratio concrete. Results also indicate, as expected, that for equal periods of exposure, nominal corrosion current density (icorr) values were generally higher for rebar in concrete with higher w/c ratio than those for rebar in low w/c ratio concrete. Analysis of the observed impedance spectra in terms of a modified Randles circuit (in which the ideal capacitor is replaced by a constant phase element (CPE)) appeared to be a reasonable approximation.</description><subject>Applied sciences</subject><subject>Building structure</subject><subject>Buildings. Public works</subject><subject>Chlorides</subject><subject>Concretes. Mortars. Grouts</subject><subject>Construction (buildings and works)</subject><subject>Corrosion</subject><subject>Corrosion rate</subject><subject>Durability. Pathology. Repairing. Maintenance</subject><subject>Electrochemical impedance</subject><subject>Exact sciences and technology</subject><subject>Hydraulic constructions</subject><subject>Materials</subject><subject>Polarization resistance</subject><subject>Port facilities and coastal structures. 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Public works</topic><topic>Chlorides</topic><topic>Concretes. Mortars. Grouts</topic><topic>Construction (buildings and works)</topic><topic>Corrosion</topic><topic>Corrosion rate</topic><topic>Durability. Pathology. Repairing. Maintenance</topic><topic>Electrochemical impedance</topic><topic>Exact sciences and technology</topic><topic>Hydraulic constructions</topic><topic>Materials</topic><topic>Polarization resistance</topic><topic>Port facilities and coastal structures. 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| ispartof | Cement and concrete research, 2002-03, Vol.32 (3), p.491-498 |
| issn | 0008-8846 1873-3948 |
| language | eng |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Applied sciences Building structure Buildings. Public works Chlorides Concretes. Mortars. Grouts Construction (buildings and works) Corrosion Corrosion rate Durability. Pathology. Repairing. Maintenance Electrochemical impedance Exact sciences and technology Hydraulic constructions Materials Polarization resistance Port facilities and coastal structures. Lighthouses and beacons Reinforced concrete Reinforced concrete structure |
| title | Corrosion measurements of steel reinforcement in concrete exposed to a tropical marine atmosphere |
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