Repairing and Strengthening of Damaged RC Columns Using Thin Concrete Jacketing
This research aims to investigate the efficiency of repairing damaged concrete columns using thin concrete jacketing. The experimental program included casting of nine reference 300 mm long reinforced concrete column specimens: three specimens had a cross-sectional dimension of 100 mm × 100 mm, thre...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2019-01-01
|
| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/2987412 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832565576616116224 |
|---|---|
| author | Bassam A. Tayeh Mohammed Abu Naja Samir Shihada Mohammed Arafa |
| author_facet | Bassam A. Tayeh Mohammed Abu Naja Samir Shihada Mohammed Arafa |
| author_sort | Bassam A. Tayeh |
| collection | DOAJ |
| description | This research aims to investigate the efficiency of repairing damaged concrete columns using thin concrete jacketing. The experimental program included casting of nine reference 300 mm long reinforced concrete column specimens: three specimens had a cross-sectional dimension of 100 mm × 100 mm, three specimens had a cross-sectional dimension of 150 mm × 150 mm, and three specimens had a cross-sectional dimension of 170 mm × 170 mm. A total of 36 identical column cores were cast with similar cross sections of 100 mm × 100 mm and a height of 300 mm. These cores were damaged by loading them with approximately 90% of their actual ultimate axial load capacities. Then, the columns were repaired and strengthened by applying two jacketing materials, which were 25 and 35 mm thick, on all four sides. Group 1 consisted of 18 column cores jacketed by normal strength concrete with a maximum aggregate size of 4.75 mm and steel reinforcement, whereas Group 2 consisted of 18 column cores jacketed using ultrahigh-performance fibre-reinforced self-compacting concrete with steel reinforcement. The experimental program showed that the Group 1 specimens had ultimate load capacities more than twice those of the unjacketed reference columns and the same axial capacity as the monolithically cast reference columns. The Group 2 specimens showed a significant increase in ultimate load capacity, which was approximately 3 times that of the unjacketed reference column and 1.86 times that of the monolithically cast reference columns. Moreover, using the shear studs was found to be the most effective among the three surface preparation techniques. |
| format | Article |
| id | doaj-art-3bf2f9d3f1d64bb0b2a9af5b954bb324 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-3bf2f9d3f1d64bb0b2a9af5b954bb3242025-02-03T01:07:12ZengWileyAdvances in Civil Engineering1687-80861687-80942019-01-01201910.1155/2019/29874122987412Repairing and Strengthening of Damaged RC Columns Using Thin Concrete JacketingBassam A. Tayeh0Mohammed Abu Naja1Samir Shihada2Mohammed Arafa3Civil Engineering Department, Islamic University of Gaza, Gaza, State of PalestineCivil Engineering Department, Islamic University of Gaza, Gaza, State of PalestineCivil Engineering Department, Islamic University of Gaza, Gaza, State of PalestineCivil Engineering Department, Islamic University of Gaza, Gaza, State of PalestineThis research aims to investigate the efficiency of repairing damaged concrete columns using thin concrete jacketing. The experimental program included casting of nine reference 300 mm long reinforced concrete column specimens: three specimens had a cross-sectional dimension of 100 mm × 100 mm, three specimens had a cross-sectional dimension of 150 mm × 150 mm, and three specimens had a cross-sectional dimension of 170 mm × 170 mm. A total of 36 identical column cores were cast with similar cross sections of 100 mm × 100 mm and a height of 300 mm. These cores were damaged by loading them with approximately 90% of their actual ultimate axial load capacities. Then, the columns were repaired and strengthened by applying two jacketing materials, which were 25 and 35 mm thick, on all four sides. Group 1 consisted of 18 column cores jacketed by normal strength concrete with a maximum aggregate size of 4.75 mm and steel reinforcement, whereas Group 2 consisted of 18 column cores jacketed using ultrahigh-performance fibre-reinforced self-compacting concrete with steel reinforcement. The experimental program showed that the Group 1 specimens had ultimate load capacities more than twice those of the unjacketed reference columns and the same axial capacity as the monolithically cast reference columns. The Group 2 specimens showed a significant increase in ultimate load capacity, which was approximately 3 times that of the unjacketed reference column and 1.86 times that of the monolithically cast reference columns. Moreover, using the shear studs was found to be the most effective among the three surface preparation techniques.http://dx.doi.org/10.1155/2019/2987412 |
| spellingShingle | Bassam A. Tayeh Mohammed Abu Naja Samir Shihada Mohammed Arafa Repairing and Strengthening of Damaged RC Columns Using Thin Concrete Jacketing Advances in Civil Engineering |
| title | Repairing and Strengthening of Damaged RC Columns Using Thin Concrete Jacketing |
| title_full | Repairing and Strengthening of Damaged RC Columns Using Thin Concrete Jacketing |
| title_fullStr | Repairing and Strengthening of Damaged RC Columns Using Thin Concrete Jacketing |
| title_full_unstemmed | Repairing and Strengthening of Damaged RC Columns Using Thin Concrete Jacketing |
| title_short | Repairing and Strengthening of Damaged RC Columns Using Thin Concrete Jacketing |
| title_sort | repairing and strengthening of damaged rc columns using thin concrete jacketing |
| url | http://dx.doi.org/10.1155/2019/2987412 |
| work_keys_str_mv | AT bassamatayeh repairingandstrengtheningofdamagedrccolumnsusingthinconcretejacketing AT mohammedabunaja repairingandstrengtheningofdamagedrccolumnsusingthinconcretejacketing AT samirshihada repairingandstrengtheningofdamagedrccolumnsusingthinconcretejacketing AT mohammedarafa repairingandstrengtheningofdamagedrccolumnsusingthinconcretejacketing |