Service life prediction for 50-year-old buildings in marine environments
[EN] Steel reinforcing bars are often coated with rusts formed during service in reinforced concrete (RC) structures. Rust layers growing on steel rebars induce expansive stresses and cause cracking on cover concrete. This study uses steel corrosion rate results measured on reinforced concrete build...
| Authors: | , , , , |
|---|---|
| Format: | article |
| Status: | Published version |
| Publication Date: | 2018 |
| Country: | España |
| Institution: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repository: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/187179 |
| Online Access: | http://hdl.handle.net/10261/187179 |
| Access Level: | Open access |
| Keyword: | Chloride Concrete corrosion cracking Expansive stress Marine environments Rust layer Ambiente marino Cloruros Corrosión hormigón Herrumbre Tensión expansiva http://metadata.un.org/sdg/14 Conserve and sustainably use the oceans, seas and marine resources for sustainable development |
| Summary: | [EN] Steel reinforcing bars are often coated with rusts formed during service in reinforced concrete (RC) structures. Rust layers growing on steel rebars induce expansive stresses and cause cracking on cover concrete. This study uses steel corrosion rate results measured on reinforced concrete buildings of more than 50 years of age located in marine environments and considers the pressure generated by the volume expansion of corrosion product layers to calculate the service life of the RC structures using a numerical simulation, estimat-ing the time to corrosion cracking of the concrete cover. Akaganeite, goethite, lepidocrocite, hematite, magnetite and maghemite were identified by X-ray diffraction as crystalline phase constituents of the rust layers. |
|---|