| contributor author | Yasir F. Al-Lebban; Kevin R. Mackie | |
| date accessioned | 2019-03-10T11:57:48Z | |
| date available | 2019-03-10T11:57:48Z | |
| date issued | 2019 | |
| identifier other | %28ASCE%29CC.1943-5614.0000916.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4254551 | |
| description abstract | Externally bonded (EB) fiber-reinforced polymer (FRP) composites are an effective means for the strengthening of shear-deficient reinforced concrete flexural members. Previous studies have predominantly employed epoxy-based wet layup systems. In this study, carbon FRP preimpregnated with polyurethane resin is utilized in strengthening shear-deficient RC beams and compared with an epoxy resin. Fourteen small-scale (2,438×152×305 mm) and five large-scale (3,353×305×432 mm) flexural specimens were tested, considering FRP type (polyurethane, epoxy), size effect, shear span-to-depth ratio, FRP configuration (U-wraps, side bonding), and FRP scheme (sheets, strips at 45° or 90°). Four-point loading tests demonstrated similar or enhanced shear capacity for the polyurethane-strengthened RC beams compared to the epoxy-strengthened beams. A mechanics-based analytical model, utilizing the principle of effective FRP stress and the upper-bound theorem of limit analysis, illustrated that the shear behavior and debonding mechanism were dependent on both FRP composite and bond characteristics. | |
| publisher | American Society of Civil Engineers | |
| title | Polyurethane-FRP External Strengthening of RC Beams with No Steel Stirrups | |
| type | Journal Paper | |
| journal volume | 23 | |
| journal issue | 1 | |
| journal title | Journal of Composites for Construction | |
| identifier doi | 10.1061/(ASCE)CC.1943-5614.0000916 | |
| page | 04018074 | |
| tree | Journal of Composites for Construction:;2019:;Volume ( 023 ):;issue: 001 | |
| contenttype | Fulltext | |
