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

^*Corresponding author for this work

School of Engineering
Public University of Navarre

Research output: Contribution to journal › Article › peer-review

18 Citations (SciVal)

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.

Original language	English
Article number	127827
Journal	Construction and Building Materials
Volume	340
DOIs	https://doi.org/10.1016/j.conbuildmat.2022.127827
Publication status	Published - 18 Jul 2022

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 9 Industry, Innovation, and Infrastructure

Keywords

3D concrete printing
Additive manufacturing
Bonding strength
Pull-out test
Reinforcement

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10.1016/j.conbuildmat.2022.127827

Cite this

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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",

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day = "18",

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

language = "English",

volume = "340",

journal = "Construction and Building Materials",

issn = "0950-0618",

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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.

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 - https://www.scopus.com/pages/publications/85130321347

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

Abstract

UN SDGs

Keywords

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