Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Bond performance between BFRP bars and 3D printed concrete
Highlights Effect of printing path on the bond behavior between BFRP bar and printed concrete was clarified. Effects of surface treatments of BFRP bars on the bond performance were determined. Bond degradation mechanism caused by the printing path was determined. A continuous bond-slip model was established to predict bond strength between BFRP bar and 3DPC.
Abstract To improve the design and construction of three-dimensional (3D) printed concrete structures, the bond performance between basalt fibre reinforced polymer (BFRP) bars and 3D printed concrete were analysed via pull-out tests. It is found that the bond strength of 3D printed specimens was lower than that of mould-cast specimens, while the failure mode of BFRP bar-reinforced printed concrete was similar to that of reinforced common concrete. The bonding of sand-coated BFRP bars to 3D printed concrete was superior to that of smooth bars. The printing direction of concrete also affected bond performance, with the bond strengths of parallel and 45° inclined specimens exceeding that of vertically printed specimens. By identifying defects at printed and bonding interfaces, the bond degradation mechanism was determined. Furthermore, a continuous bond–slip model was established to predict the bonding strength between BFRP bars and printed concrete, which agreed well with the experimental results.
Bond performance between BFRP bars and 3D printed concrete
Highlights Effect of printing path on the bond behavior between BFRP bar and printed concrete was clarified. Effects of surface treatments of BFRP bars on the bond performance were determined. Bond degradation mechanism caused by the printing path was determined. A continuous bond-slip model was established to predict bond strength between BFRP bar and 3DPC.
Abstract To improve the design and construction of three-dimensional (3D) printed concrete structures, the bond performance between basalt fibre reinforced polymer (BFRP) bars and 3D printed concrete were analysed via pull-out tests. It is found that the bond strength of 3D printed specimens was lower than that of mould-cast specimens, while the failure mode of BFRP bar-reinforced printed concrete was similar to that of reinforced common concrete. The bonding of sand-coated BFRP bars to 3D printed concrete was superior to that of smooth bars. The printing direction of concrete also affected bond performance, with the bond strengths of parallel and 45° inclined specimens exceeding that of vertically printed specimens. By identifying defects at printed and bonding interfaces, the bond degradation mechanism was determined. Furthermore, a continuous bond–slip model was established to predict the bonding strength between BFRP bars and printed concrete, which agreed well with the experimental results.
Bond performance between BFRP bars and 3D printed concrete
Sun, Xiaoyan (Autor:in) / Gao, Chao (Autor:in) / Wang, Hailong (Autor:in)
13.10.2020
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Experimental Studies on Bond Performance of BFRP Bars Reinforced Coral Aggregate Concrete
| DOAJ | 2019