Experimental investigation of reinforcement strategies for concrete extrusion 3D printed beams
- Conference Paper
Rights / licenseCreative Commons Attribution-NoDerivatives 4.0 International
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. Show more
Book titleProceedings of the 2020 session of the 13th fib International PhD Symposium in Civil Engineering
Pages / Article No.
PublisherInternational Federation for Structural Concrete (fib)
Subjectreinforcement strategies; digital fabrication; structural testing; 3D concrete printing; interlayer reinforcement
Organisational unit09469 - Kaufmann, Walter / Kaufmann, Walter
02284 - NFS Digitale Fabrikation / NCCR Digital Fabrication
09566 - Dillenburger, Benjamin / Dillenburger, Benjamin
NotesConference lecture held on August 26, 2020. Due to the Coronavirus (COVID-19) the conference was conducted virtually.
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