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Pullout behavior of single arc-shaped steel fiber from brittle SIFCON matrix with various embedment lengths and inclination angles
https://orcid.org/0000-0002-0911-1976
Abstract This study aimed to experimentally investigate the pullout behavior of single arc-shaped steel fiber embedded in a slurry-infiltrated fiber concrete (SIFCON) matrix. Three types of steel fibers, namely, hooked-end (2BS), arc-shaped I (1BA), and arc-shaped II (2BA), were examined, each with three different embedment lengths (8 mm, 12 mm, and 16 mm) and four distinct inclination angles (0°, 15°, 30°, and 45°). The test results revealed that the pullout behavior between arc-shaped and hooked-end steel fibers was essentially different. Remarkably, 2BA fiber exhibited superior bond performance compared to 2BS and 1BA fibers, attributed to the common contribution of body arched portion and double bend at both ends. In the case of the same inclination angle, increased embedment length led to higher peak loads, more excellent fiber strength utilization ratios, and increased pullout energy, regardless of the steel fiber shapes. However, the average bond strength significantly decreased as the embedment length increased. Furthermore, the peak load, fiber strength utilization ratio, and average bond strength initially increased and then decreased with the inclination angle, regardless of the steel fiber shape. It is found that better bond performance was observed at inclination angles of approximately 15° or 30°.
Highlights The fiber pullout behavior of 2BS, 1BA, and 2BA steel fibers from brittle SIFCON matrix is investigated comparatively. The effects of embedment length and inclination angle on the pullout behavior of the fibers mentioned above are studied. 2BA fibers exhibit attracting bond performance attributed to the common contribution of body arched portion and double bend.
Pullout behavior of single arc-shaped steel fiber from brittle SIFCON matrix with various embedment lengths and inclination angles
https://orcid.org/0000-0002-0911-1976
Abstract This study aimed to experimentally investigate the pullout behavior of single arc-shaped steel fiber embedded in a slurry-infiltrated fiber concrete (SIFCON) matrix. Three types of steel fibers, namely, hooked-end (2BS), arc-shaped I (1BA), and arc-shaped II (2BA), were examined, each with three different embedment lengths (8 mm, 12 mm, and 16 mm) and four distinct inclination angles (0°, 15°, 30°, and 45°). The test results revealed that the pullout behavior between arc-shaped and hooked-end steel fibers was essentially different. Remarkably, 2BA fiber exhibited superior bond performance compared to 2BS and 1BA fibers, attributed to the common contribution of body arched portion and double bend at both ends. In the case of the same inclination angle, increased embedment length led to higher peak loads, more excellent fiber strength utilization ratios, and increased pullout energy, regardless of the steel fiber shapes. However, the average bond strength significantly decreased as the embedment length increased. Furthermore, the peak load, fiber strength utilization ratio, and average bond strength initially increased and then decreased with the inclination angle, regardless of the steel fiber shape. It is found that better bond performance was observed at inclination angles of approximately 15° or 30°.
Highlights The fiber pullout behavior of 2BS, 1BA, and 2BA steel fibers from brittle SIFCON matrix is investigated comparatively. The effects of embedment length and inclination angle on the pullout behavior of the fibers mentioned above are studied. 2BA fibers exhibit attracting bond performance attributed to the common contribution of body arched portion and double bend.
Pullout behavior of single arc-shaped steel fiber from brittle SIFCON matrix with various embedment lengths and inclination angles
https://orcid.org/0000-0002-0911-1976
Abstract This study aimed to experimentally investigate the pullout behavior of single arc-shaped steel fiber embedded in a slurry-infiltrated fiber concrete (SIFCON) matrix. Three types of steel fibers, namely, hooked-end (2BS), arc-shaped I (1BA), and arc-shaped II (2BA), were examined, each with three different embedment lengths (8 mm, 12 mm, and 16 mm) and four distinct inclination angles (0°, 15°, 30°, and 45°). The test results revealed that the pullout behavior between arc-shaped and hooked-end steel fibers was essentially different. Remarkably, 2BA fiber exhibited superior bond performance compared to 2BS and 1BA fibers, attributed to the common contribution of body arched portion and double bend at both ends. In the case of the same inclination angle, increased embedment length led to higher peak loads, more excellent fiber strength utilization ratios, and increased pullout energy, regardless of the steel fiber shapes. However, the average bond strength significantly decreased as the embedment length increased. Furthermore, the peak load, fiber strength utilization ratio, and average bond strength initially increased and then decreased with the inclination angle, regardless of the steel fiber shape. It is found that better bond performance was observed at inclination angles of approximately 15° or 30°.
Highlights The fiber pullout behavior of 2BS, 1BA, and 2BA steel fibers from brittle SIFCON matrix is investigated comparatively. The effects of embedment length and inclination angle on the pullout behavior of the fibers mentioned above are studied. 2BA fibers exhibit attracting bond performance attributed to the common contribution of body arched portion and double bend.
Pullout behavior of single arc-shaped steel fiber from brittle SIFCON matrix with various embedment lengths and inclination angles
Li, Yabiao (Autor:in) / Liu, Fengshan (Autor:in) / Li, Hedong (Autor:in) / Zhang, Xiufang (Autor:in) / Pan, Yunfeng (Autor:in) / Liu, Chengbin (Autor:in)
14.02.2024
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Pull-out behavior of single steel fiber from SIFCON matrix
| British Library Online Contents | 2012
Pull-out behavior of single steel fiber from SIFCON matrix
| Online Contents | 2012
Pull-out behavior of single steel fiber from SIFCON matrix
| British Library Online Contents | 2012
Pull-out behavior of single steel fiber from SIFCON matrix
| Elsevier | 2012