The Role of Bond in Shear Transfer of Shear Critical Reinforced Concrete Slender Beams
| dc.contributor.advisor | Esayas, Gebreyouhannes (PhD) | |
| dc.contributor.author | Weyneshet, Getachew | |
| dc.date.accessioned | 2022-06-14T04:00:12Z | |
| dc.date.accessioned | 2023-11-11T12:56:45Z | |
| dc.date.available | 2022-06-14T04:00:12Z | |
| dc.date.available | 2023-11-11T12:56:45Z | |
| dc.date.issued | 2022-01 | |
| dc.description.abstract | Due to its complex nature, the effect of bond loss between concrete and longitudinal bar on the shear transfer mechanism lacks a complete framework. So far, all ranges of bond losses are considered as a total bond loss, leaving no gap to address intermediate ranges. Advancement in this area will aid in the assessment of the service life time of various structures and provide insight for rehabilitative engineers in their efforts. An experimental program was undertaken to investigate two ranges of bond losses, complete bond loss and bond losses induced by transversal cracks in relation to the effect of the location of the bond deterioration. In first set Pullout test was used to determine the best approach for bond cutting without compromising the cracking pattern. This set experimented on the location of the artificial bond cut. It included the control beam and two beams with artificial bond cutting material covering 75% of their shear span, with a sole difference being the location of the artificial bond cut. The second set experimented on bond losses induced by transversal cracks. The transversal cracks were induced by introducing slits and a water proof tape was wounded around the slits to simulate the bond deterioration zone. This set included four beams with 75% and 50% of their shear span designed to imitate transversal cracks. During testing, the shear strain at specified points of the 8 beams were measured to compare the two sets. A number of mold strain gauges were also used in the second set of specimens to monitor the transfer of shear force to the web. The results of the beam specimens in the first set have attained 90% up to 100% of their flexural capacity, while the control has attained 53% of the flexural capacity. It was also observed that the critical diagonal crack initiation, propagation and location is severely affected by the experimental variables. Finally, it was observed that the location of the bond cut or bond deterioration resulted in a different effect on the two sets. | en_US |
| dc.identifier.uri | http://etd.aau.edu.et/handle/12345678/31990 | |
| dc.language.iso | en_US | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | Role of Bond | en_US |
| dc.subject | Reinforced Concrete Slender Beams | en_US |
| dc.subject | Shear | en_US |
| dc.title | The Role of Bond in Shear Transfer of Shear Critical Reinforced Concrete Slender Beams | en_US |
| dc.type | Thesis | en_US |