Failure Modes in Concrete Repair Systems due to Ongoing Corrosion
Corrosion of steel reinforcement is the main cause of deterioration in reinforced concrete structures. It can result in cracking and spalling of the concrete cover. After the damaged cover is repaired, reinforcement corrosion might continue and even accelerate. While the development of the corrosion...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2017-01-01
|
| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2017/9649187 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832554486996926464 |
|---|---|
| author | Mladena Luković Branko Šavija Guang Ye Erik Schlangen Klaas van Breugel |
| author_facet | Mladena Luković Branko Šavija Guang Ye Erik Schlangen Klaas van Breugel |
| author_sort | Mladena Luković |
| collection | DOAJ |
| description | Corrosion of steel reinforcement is the main cause of deterioration in reinforced concrete structures. It can result in cracking and spalling of the concrete cover. After the damaged cover is repaired, reinforcement corrosion might continue and even accelerate. While the development of the corrosion cell is difficult to control, the damage can be possibly delayed and controlled by use of a suitable repair material. The lattice fracture model is used in this paper to investigate the performance of strain hardening cementitious composite (SHCC) in concrete repair systems exposed to ongoing corrosion. Numerical results were verified by experimental tests when SHCC, nonreinforced material (repair mortar), and commercial repair mortar are used as repair materials. In experiments, reinforcement bars (surrounded by a repair material) were exposed to accelerated corrosion tests. The influence of the substrate surface preparation, the type of repair material, the interface, and the substrate strength on the resulting damage and failure mode of repair systems are discussed. In general, SHCC repair enables distributed cracking with small crack widths, up to several times smaller compared to repair mortar. Furthermore, more warning signs prior to the final failure are present in the SHCC repair system. |
| format | Article |
| id | doaj-art-3ed057f1ae6c4b729eb736336bcf7056 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-3ed057f1ae6c4b729eb736336bcf70562025-02-03T05:51:18ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422017-01-01201710.1155/2017/96491879649187Failure Modes in Concrete Repair Systems due to Ongoing CorrosionMladena Luković0Branko Šavija1Guang Ye2Erik Schlangen3Klaas van Breugel4Delft University of Technology, Delft, NetherlandsDelft University of Technology, Delft, NetherlandsDelft University of Technology, Delft, NetherlandsDelft University of Technology, Delft, NetherlandsDelft University of Technology, Delft, NetherlandsCorrosion of steel reinforcement is the main cause of deterioration in reinforced concrete structures. It can result in cracking and spalling of the concrete cover. After the damaged cover is repaired, reinforcement corrosion might continue and even accelerate. While the development of the corrosion cell is difficult to control, the damage can be possibly delayed and controlled by use of a suitable repair material. The lattice fracture model is used in this paper to investigate the performance of strain hardening cementitious composite (SHCC) in concrete repair systems exposed to ongoing corrosion. Numerical results were verified by experimental tests when SHCC, nonreinforced material (repair mortar), and commercial repair mortar are used as repair materials. In experiments, reinforcement bars (surrounded by a repair material) were exposed to accelerated corrosion tests. The influence of the substrate surface preparation, the type of repair material, the interface, and the substrate strength on the resulting damage and failure mode of repair systems are discussed. In general, SHCC repair enables distributed cracking with small crack widths, up to several times smaller compared to repair mortar. Furthermore, more warning signs prior to the final failure are present in the SHCC repair system.http://dx.doi.org/10.1155/2017/9649187 |
| spellingShingle | Mladena Luković Branko Šavija Guang Ye Erik Schlangen Klaas van Breugel Failure Modes in Concrete Repair Systems due to Ongoing Corrosion Advances in Materials Science and Engineering |
| title | Failure Modes in Concrete Repair Systems due to Ongoing Corrosion |
| title_full | Failure Modes in Concrete Repair Systems due to Ongoing Corrosion |
| title_fullStr | Failure Modes in Concrete Repair Systems due to Ongoing Corrosion |
| title_full_unstemmed | Failure Modes in Concrete Repair Systems due to Ongoing Corrosion |
| title_short | Failure Modes in Concrete Repair Systems due to Ongoing Corrosion |
| title_sort | failure modes in concrete repair systems due to ongoing corrosion |
| url | http://dx.doi.org/10.1155/2017/9649187 |
| work_keys_str_mv | AT mladenalukovic failuremodesinconcreterepairsystemsduetoongoingcorrosion AT brankosavija failuremodesinconcreterepairsystemsduetoongoingcorrosion AT guangye failuremodesinconcreterepairsystemsduetoongoingcorrosion AT erikschlangen failuremodesinconcreterepairsystemsduetoongoingcorrosion AT klaasvanbreugel failuremodesinconcreterepairsystemsduetoongoingcorrosion |