TY - THES ID - 135278496 TI - PULL OUT TESTS ON 3DPC - BOND STRENGHT OF DIFFERENT REINFORCEMENT TYPES AU - De Fleurquin, Zeno AU - Molkens, Tom AU - Shkundalova, Olena AU - KU Leuven. Faculteit Industriële Ingenieurswetenschappen. Opleiding Master in de industriële wetenschappen. Bouwkunde (Gent) PY - 2023 PB - Leuven KU Leuven. Faculteit Industriële Ingenieurswetenschappen DB - UniCat UR - https://www.unicat.be/uniCat?func=search&query=sysid:135278496 AB - This thesis aims to investigate the bond strength between 3D printed concrete and diverse types of reinforcement. The application of 3D printed concrete within the construction industry is still in its initial stages as there are still many challenges yet to be solved. One of these challenges is the successful implementation of reinforcement in 3D printed concrete. Due to its anisotropy caused by the layered structure, it exhibits a completely different behaviour than conventionally casted concrete. This research is extremely interesting to gain new crucial insights on the implementation of 3D printed concrete as a construction method. This new technique has the potential to drastically change the future of the construction industry. It enables complex geometries and precise customisation; this can lead to more durable and efficient structures. To carry out this research, specimens were made from 3D printed concrete and conventional casted concrete that were subjected to a double beam end test. Three diverse types of reinforcement were used. First, an open cord wire was used, then also a barbed wire and, for reference, a conventional ribbed reinforcement bar. The specimens were dimensioned so that when subjected to this test setup, they would fail due to the debound between the concrete and the reinforcement. The advantage of this test setup is that it uses bending instead of direct pull on the reinforcement. In addition, the location of the tension reinforcement, at the bottom of the specimen, is also much closer to the actual situations on which concrete structures are designed. The objective of these tests was to provide more insight on how the reinforcement bars behave in 3D printed concrete. With the open cord wire, this was quickly apparent; this wire was far too fragile to be implemented in concrete structures. In contrast, the barbed wire brought promising results. Because the spines of the barbed wire created a mechanical lock, a greater bond strength was achieved. It also ensured that the different layers of the 3D printed concrete were better bonded. The forces achieved did not differ much from specimens made from conventionally casted concrete. These promising results regarding the barbed wire as a reinforcement bar offer interesting perspectives for future further research. Future research could focus on further optimising this technique or exploring new possibilities in using barbed wire as reinforcement. ER -