Aramburu, A.Calderon-Uriszar-Aldaca, I.Puente, I.2024-07-242024-07-242022-07-18Aramburu , 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.2022.1278270950-0618https://hdl.handle.net/11556/3754Publisher Copyright: © 2022 Elsevier LtdPassive 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.enginfo:eu-repo/semantics/restrictedAccessjournal article10.1016/j.conbuildmat.2022.1278273D concrete printingAdditive manufacturingBonding strengthPull-out testReinforcementCivil and Structural EngineeringBuilding and ConstructionGeneral Materials ScienceSDG 9 - Industry, Innovation, and Infrastructurehttp://www.scopus.com/inward/record.url?scp=85130321347&partnerID=8YFLogxK