Experimental Investigation of Reinforcement-Strategies for Concrete-Extrusion 3D Printed Beams (2020-08)¶

10.3929/ethz-b-000444960

Gebhard Lukas, Mata-Falcón Jaime, Anton Ana-Maria, Dillenburger Benjamin, Kaufmann Walter
Contribution - Proceedings of the 13^th fib International PhD Symposium in Civil Engineering

Abstract

This study investigates the structural behaviour of different reinforcement concepts for extrusion-based 3D concrete printed beams. As longitudinal reinforcement, unbonded post-tensioning and passive bonded reinforcement are explored. As shear reinforcement, fibres and cables placed between the layers of concrete are analysed. The results of four-point bending tests show that unbonded reinforcement leads to highly brittle failure without a proper activation of the shear reinforcement. The beams with conventional bonded reinforcement behave monolithically, with little influence of the concrete layering. Cables, as well as fibres, increase the shear resistance significantly. While cables have higher efficiency, fibres lead to finer and more closely spaced cracks.

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8 References

5 Citations

BibTeX

@inproceedings{gebh_mata_anto_dill.2020.EIoRSfCE3PB,
  author            = "Lukas Gebhard and Jaime Mata-Falcón and Ana-Maria Anton and Benjamin Dillenburger and Walter Kaufmann",
  title             = "Experimental Investigation of Reinforcement-Strategies for Concrete-Extrusion 3D Printed Beams",
  doi               = "10.3929/ethz-b-000444960",
  year              = "2020",
  booktitle         = "Proceedings of the 13th fib International PhD Symposium in Civil Engineering",
  editor            = "fédération internationale du béton",
}

Formatted Citation

IEEE

L. Gebhard, J. Mata-Falcón, A.-M. Anton, B. Dillenburger and W. Kaufmann, “Experimental Investigation of Reinforcement-Strategies for Concrete-Extrusion 3D Printed Beams”, in Proceedings of the 13^th fib International PhD Symposium in Civil Engineering, 2020. doi: 10.3929/ethz-b-000444960.

CMOS

Gebhard, Lukas, Jaime Mata-Falcón, Ana-Maria Anton, Benjamin Dillenburger, and Walter Kaufmann. “Experimental Investigation of Reinforcement-Strategies for Concrete-Extrusion 3D Printed Beams”. In Proceedings of the 13^th Fib International PhD Symposium in Civil Engineering, edited by fédération internationale du béton, 2020. https://doi.org/10.3929/ethz-b-000444960.