RT Journal Article
T1 Bonding strength of steel rebars perpendicular to the hardened 3D-printed concrete layers
A1 Aramburu, A.
A1 Calderon-Uriszar-Aldaca, I.
A1 Puente, I.
AB Passive rebars are inserted into interior hollow channels within a 3D-printed mortar geometry and then bonded with a wet joint of filling mortar, in order to test the bonding strength of the rebars within the mortar structure. Standardized test procedures are adapted for the test procedure. The test results revealed bonding strengths with shear stresses within an interval between 16.75 MPa and 18 MPa, dependent upon rebar diameter, and good early strength development of the bonding mortar of at least 14 MPa during the first week. No specimen failed because of debonding between the filling mortar and the 3D-printed cylinder, nor because of debonding of the cylinder and the concrete poured around its exterior.
SN 0950-0618
YR 2022
FD 2022-07-18
LK https://hdl.handle.net/11556/3754
UL https://hdl.handle.net/11556/3754
LA eng
NO Aramburu , A , Calderon-Uriszar-Aldaca , I & Puente , I 2022 , ' Bonding strength of steel rebars perpendicular to the hardened 3D-printed concrete layers ' , Construction and Building Materials , vol. 340 , 127827 . https://doi.org/10.1016/j.conbuildmat.2022.127827
NO Publisher Copyright: © 2022 Elsevier Ltd
NO The authors wish to thank the assistance received from the staff of the 3D printing laboratory of Tecnalia, (especially A. Salvador, R. Castaño) and the laboratory technician (A. López) from Tecnun – University of Navarra for documenting and assisting with the tests and measurements in the university laboratory and the technical manager of Gallardo Engineering (A. Herrero) for the ideas that helped to focus this research. Financial support is also gratefully acknowledged, both from the SPRI research program funded by the Basque Government under project ERRAIL ZL-2020/00940 and ZL-2021/00181 and from Elkartek NEOMAT project KK-2021/00059. Financial support is also gratefully acknowledged, both from the SPRI research program funded by the Basque Government under project ERRAIL ZL-2020/00940 and ZL-2021/00181 and from Elkartek NEOMAT project KK-2021/00059.
DS TECNALIA Publications
RD 28 jul 2024