Bonding strength of steel rebars perpendicular to the hardened 3D-printed concrete layers

A. Aramburu; I. Calderon-Uriszar-Aldaca; I. Puente

doi:10.1016/j.conbuildmat.2022.127827

Bonding strength of steel rebars perpendicular to the hardened 3D-printed concrete layers

A. Aramburu^*, I. Calderon-Uriszar-Aldaca, I. Puente

^*Autor correspondiente de este trabajo

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

10 Citas (Scopus)

Resumen

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.

Idioma original	Inglés
Número de artículo	127827
Publicación	Construction and Building Materials
Volumen	340
DOI	https://doi.org/10.1016/j.conbuildmat.2022.127827
Estado	Publicada - 18 jul 2022

Financiación

Financiadores	Número del financiador
Tecnun – University of Navarra
Eusko Jaurlaritza	KK-2021/00059, ERRAIL ZL-2020/00940, ZL-2021/00181

ODS de las Naciones Unidas

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title = "Bonding strength of steel rebars perpendicular to the hardened 3D-printed concrete layers",

abstract = "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.",

keywords = "3D concrete printing, Additive manufacturing, Bonding strength, Pull-out test, Reinforcement",

author = "A. Aramburu and I. Calderon-Uriszar-Aldaca and I. Puente",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd",

year = "2022",

month = jul,

day = "18",

doi = "10.1016/j.conbuildmat.2022.127827",

language = "English",

volume = "340",

journal = "Construction and Building Materials",

issn = "0950-0618",

publisher = "Elsevier Ltd.",

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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.

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

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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 -

Bonding strength of steel rebars perpendicular to the hardened 3D-printed concrete layers

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