表題番号：2019E-048
日付：2020/04/10
研究課題Effects of casting methods and flow-properties of self-compacting concrete on tflexural behavior of fiber reinforced concrete beams using X-ray images
| 研究者所属（当時） | 資格 | 氏名 | |
|---|---|---|---|
| （代表者） | 理工学術院 創造理工学部 | 講師 | リム ソーポーケム |
| （連携研究者） | Department of Civil and Environmental Engineering | Ph.D. Student | Ramiz Ahmed Raju |
| （連携研究者） | Department of Civil and Environmental Engineering | Master's Student | Takumi Kageyama |
| （連携研究者） | Department of Civil and Environmental Engineering | Bachelor Student | Syunsuke Amano |
| （連携研究者） | Department of Civil and Environmental Engineering | Professor | Mitsuyoshi Akiyama |
- 研究成果概要
- The effect of concrete casting methods and concrete mixes having different fiber contents (i.e., 20 kg/m3 and 40 kg/m3) on the fiber distribution and orientation as well as the structural performance of self-compacting concrete fiber reinforced concrete (SCFRC) beams were experimentally investigated. In the experimental program, two casting methods were designed for pouring the concrete into the same beam molds: case 1, concrete cast from a large 35-degree-slope chute into the entire mold at once, and case 2, concrete cast from a long pipe. It was found that, with the same casting method, SCFRC beams with fiber content of 40 kg/m3 showed lower segregation of fibers but fibers are less aligned to the concrete flow than other beams with fiber content of 20 kg/m3. On the other hand, the casting method of case 1 induced the larger velocity of concrete flow than that of case 2. Fibers distribute and orientate better in direction of tensile stress in beams in case 1 due to the larger flow velocity than that in case 2. Therefore, the structural performance of SCFRC beam with casting method of case 1 is found to be moderately better than that of case 2.