Flexural Behaviour of RC Beams Strengthened with Prestressed CFRP NSM Tendon Using New Prestressing System
CFRP has been used mainly for strengthening of existing structures in civil engineering area. Prestressed strengthening is being studied to solve the bond failure model featuring EBR and NSMR methods. The largest disadvantage of the prestressing system is that the system cannot be removed until the...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2017-01-01
|
| Series: | International Journal of Polymer Science |
| Online Access: | http://dx.doi.org/10.1155/2017/1497349 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832552158054055936 |
|---|---|
| author | Woo-tai Jung Jong-sup Park Jae-yoon Kang Moon-seoung Keum Young-hwan Park |
| author_facet | Woo-tai Jung Jong-sup Park Jae-yoon Kang Moon-seoung Keum Young-hwan Park |
| author_sort | Woo-tai Jung |
| collection | DOAJ |
| description | CFRP has been used mainly for strengthening of existing structures in civil engineering area. Prestressed strengthening is being studied to solve the bond failure model featuring EBR and NSMR methods. The largest disadvantage of the prestressing system is that the system cannot be removed until the filler is cured. This problem lowers the turning rate of the equipment and makes it limited to experiment, which stresses the necessity of a new prestressing system. Therefore, the present study applies a new prestressing system which reliefs the need to wait until the curing of the filler after jacking to the prestressing of NSMR and examines the effect of the prestressing size and location of the anchorage on the strengthened behaviour. The experimental results show that the crack and yield loads increase with higher level of prestress, while the ductility tends to reduce, and the anchor plate should be installed within the effective depth ds to minimize the occurrence of shear-induced diagonal cracks. The comparison of the experimental results and results by section analysis shows that the section analysis could predict the maximum load of the specimens strengthened by prestressed NSMR within an error between 4% and 6%. |
| format | Article |
| id | doaj-art-532fe3aef12140d8857d3d33e4a06184 |
| institution | Kabale University |
| issn | 1687-9422 1687-9430 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Polymer Science |
| spelling | doaj-art-532fe3aef12140d8857d3d33e4a061842025-02-03T05:59:20ZengWileyInternational Journal of Polymer Science1687-94221687-94302017-01-01201710.1155/2017/14973491497349Flexural Behaviour of RC Beams Strengthened with Prestressed CFRP NSM Tendon Using New Prestressing SystemWoo-tai Jung0Jong-sup Park1Jae-yoon Kang2Moon-seoung Keum3Young-hwan Park4Structural Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology, Goyang-si, Republic of KoreaStructural Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology, Goyang-si, Republic of KoreaStructural Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology, Goyang-si, Republic of KoreaStructural Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology, Goyang-si, Republic of KoreaStructural Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology, Goyang-si, Republic of KoreaCFRP has been used mainly for strengthening of existing structures in civil engineering area. Prestressed strengthening is being studied to solve the bond failure model featuring EBR and NSMR methods. The largest disadvantage of the prestressing system is that the system cannot be removed until the filler is cured. This problem lowers the turning rate of the equipment and makes it limited to experiment, which stresses the necessity of a new prestressing system. Therefore, the present study applies a new prestressing system which reliefs the need to wait until the curing of the filler after jacking to the prestressing of NSMR and examines the effect of the prestressing size and location of the anchorage on the strengthened behaviour. The experimental results show that the crack and yield loads increase with higher level of prestress, while the ductility tends to reduce, and the anchor plate should be installed within the effective depth ds to minimize the occurrence of shear-induced diagonal cracks. The comparison of the experimental results and results by section analysis shows that the section analysis could predict the maximum load of the specimens strengthened by prestressed NSMR within an error between 4% and 6%.http://dx.doi.org/10.1155/2017/1497349 |
| spellingShingle | Woo-tai Jung Jong-sup Park Jae-yoon Kang Moon-seoung Keum Young-hwan Park Flexural Behaviour of RC Beams Strengthened with Prestressed CFRP NSM Tendon Using New Prestressing System International Journal of Polymer Science |
| title | Flexural Behaviour of RC Beams Strengthened with Prestressed CFRP NSM Tendon Using New Prestressing System |
| title_full | Flexural Behaviour of RC Beams Strengthened with Prestressed CFRP NSM Tendon Using New Prestressing System |
| title_fullStr | Flexural Behaviour of RC Beams Strengthened with Prestressed CFRP NSM Tendon Using New Prestressing System |
| title_full_unstemmed | Flexural Behaviour of RC Beams Strengthened with Prestressed CFRP NSM Tendon Using New Prestressing System |
| title_short | Flexural Behaviour of RC Beams Strengthened with Prestressed CFRP NSM Tendon Using New Prestressing System |
| title_sort | flexural behaviour of rc beams strengthened with prestressed cfrp nsm tendon using new prestressing system |
| url | http://dx.doi.org/10.1155/2017/1497349 |
| work_keys_str_mv | AT wootaijung flexuralbehaviourofrcbeamsstrengthenedwithprestressedcfrpnsmtendonusingnewprestressingsystem AT jongsuppark flexuralbehaviourofrcbeamsstrengthenedwithprestressedcfrpnsmtendonusingnewprestressingsystem AT jaeyoonkang flexuralbehaviourofrcbeamsstrengthenedwithprestressedcfrpnsmtendonusingnewprestressingsystem AT moonseoungkeum flexuralbehaviourofrcbeamsstrengthenedwithprestressedcfrpnsmtendonusingnewprestressingsystem AT younghwanpark flexuralbehaviourofrcbeamsstrengthenedwithprestressedcfrpnsmtendonusingnewprestressingsystem |