TY - JOUR
T1 - Bonding strength of steel rebars perpendicular to the hardened 3D-printed concrete layers
AU - Aramburu, A.
AU - Calderon-Uriszar-Aldaca, I.
AU - Puente, I.
N1 - Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/7/18
Y1 - 2022/7/18
N2 - 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.
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.
KW - 3D concrete printing
KW - Additive manufacturing
KW - Bonding strength
KW - Pull-out test
KW - Reinforcement
UR - http://www.scopus.com/inward/record.url?scp=85130321347&partnerID=8YFLogxK
U2 - 10.1016/j.conbuildmat.2022.127827
DO - 10.1016/j.conbuildmat.2022.127827
M3 - Article
AN - SCOPUS:85130321347
SN - 0950-0618
VL - 340
JO - Construction and Building Materials
JF - Construction and Building Materials
M1 - 127827
ER -
