Ductility of 3D printed concrete reinforced with short straight steel fibers

F.P. Bos (Corresponding author), E. Bosco, T.A.M. Salet

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

3 Citaties (Scopus)

Uittreksel

With the number of 3D printed concrete structures rapidly increasing, the demand for concepts that allow for robust and ductile printed objects becomes increasingly pressing. An obvious solution strategy is the inclusion of fibers in the printed material. In this study, the effect of adding short straight steel fibers on the failure behaviour of Weber 3D 115-1 print mortar has been studied through several CMOD tests on cast and printed concrete, on different scales. The experiments have also been simulated numerically. The research has shown that the fibers cause an important increase in flexural strength, and eliminate the strength difference between cast and printed concrete that exists without fibers. The post-peak behaviour, nevertheless, has to be characterised as strongly strain-softening. In the printed specimens, a strong fiber orientation in the direction of the filament occurs. However, this has no notable effect on the performance in the tested direction: cast and printed concrete with fibers behave similarly in the CMOD test. For the key parameters, no scale effect was found for the specimens with fibers, contrary to the ones without. Numerical modelling of the test by using the Concrete Damage Plasticity material model of Abaqus, with a Thorenfeldt-based constitutive law in compression and a customised constitutive law in tension, results in a reasonable fit with the experimental results.
TaalEngels
Pagina's160-174
Aantal pagina's15
TijdschriftVirtual and Physical Prototyping
Volume14
Nummer van het tijdschrift2
Vroegere onlinedatum19 nov 2018
DOI's
StatusGepubliceerd - 2019

Vingerafdruk

Ductility
Steel fibers
Reinforced Concrete
Straight
Reinforced concrete
Steel
Fiber
Fibers
Concretes
Constitutive Law
Strain Softening
Fiber Orientation
Scale Effect
Fiber reinforced materials
Mortar
Concrete Structures
Concrete construction
Bending strength
Plasticity
Filament

Citeer dit

@article{abd10702f441468983f706c3a3c63b45,
title = "Ductility of 3D printed concrete reinforced with short straight steel fibers",
abstract = "With the number of 3D printed concrete structures rapidly increasing, the demand for concepts that allow for robust and ductile printed objects becomes increasingly pressing. An obvious solution strategy is the inclusion of fibers in the printed material. In this study, the effect of adding short straight steel fibers on the failure behaviour of Weber 3D 115-1 print mortar has been studied through several CMOD tests on cast and printed concrete, on different scales. The experiments have also been simulated numerically. The research has shown that the fibers cause an important increase in flexural strength, and eliminate the strength difference between cast and printed concrete that exists without fibers. The post-peak behaviour, nevertheless, has to be characterised as strongly strain-softening. In the printed specimens, a strong fiber orientation in the direction of the filament occurs. However, this has no notable effect on the performance in the tested direction: cast and printed concrete with fibers behave similarly in the CMOD test. For the key parameters, no scale effect was found for the specimens with fibers, contrary to the ones without. Numerical modelling of the test by using the Concrete Damage Plasticity material model of Abaqus, with a Thorenfeldt-based constitutive law in compression and a customised constitutive law in tension, results in a reasonable fit with the experimental results.",
author = "F.P. Bos and E. Bosco and T.A.M. Salet",
year = "2019",
doi = "10.1080/17452759.2018.1548069",
language = "English",
volume = "14",
pages = "160--174",
journal = "Virtual and Physical Prototyping",
issn = "1745-2759",
publisher = "Taylor and Francis Ltd.",
number = "2",

}

Ductility of 3D printed concrete reinforced with short straight steel fibers. / Bos, F.P. (Corresponding author); Bosco, E.; Salet, T.A.M.

In: Virtual and Physical Prototyping, Vol. 14, Nr. 2, 2019, blz. 160-174.

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

TY - JOUR

T1 - Ductility of 3D printed concrete reinforced with short straight steel fibers

AU - Bos,F.P.

AU - Bosco,E.

AU - Salet,T.A.M.

PY - 2019

Y1 - 2019

N2 - With the number of 3D printed concrete structures rapidly increasing, the demand for concepts that allow for robust and ductile printed objects becomes increasingly pressing. An obvious solution strategy is the inclusion of fibers in the printed material. In this study, the effect of adding short straight steel fibers on the failure behaviour of Weber 3D 115-1 print mortar has been studied through several CMOD tests on cast and printed concrete, on different scales. The experiments have also been simulated numerically. The research has shown that the fibers cause an important increase in flexural strength, and eliminate the strength difference between cast and printed concrete that exists without fibers. The post-peak behaviour, nevertheless, has to be characterised as strongly strain-softening. In the printed specimens, a strong fiber orientation in the direction of the filament occurs. However, this has no notable effect on the performance in the tested direction: cast and printed concrete with fibers behave similarly in the CMOD test. For the key parameters, no scale effect was found for the specimens with fibers, contrary to the ones without. Numerical modelling of the test by using the Concrete Damage Plasticity material model of Abaqus, with a Thorenfeldt-based constitutive law in compression and a customised constitutive law in tension, results in a reasonable fit with the experimental results.

AB - With the number of 3D printed concrete structures rapidly increasing, the demand for concepts that allow for robust and ductile printed objects becomes increasingly pressing. An obvious solution strategy is the inclusion of fibers in the printed material. In this study, the effect of adding short straight steel fibers on the failure behaviour of Weber 3D 115-1 print mortar has been studied through several CMOD tests on cast and printed concrete, on different scales. The experiments have also been simulated numerically. The research has shown that the fibers cause an important increase in flexural strength, and eliminate the strength difference between cast and printed concrete that exists without fibers. The post-peak behaviour, nevertheless, has to be characterised as strongly strain-softening. In the printed specimens, a strong fiber orientation in the direction of the filament occurs. However, this has no notable effect on the performance in the tested direction: cast and printed concrete with fibers behave similarly in the CMOD test. For the key parameters, no scale effect was found for the specimens with fibers, contrary to the ones without. Numerical modelling of the test by using the Concrete Damage Plasticity material model of Abaqus, with a Thorenfeldt-based constitutive law in compression and a customised constitutive law in tension, results in a reasonable fit with the experimental results.

U2 - 10.1080/17452759.2018.1548069

DO - 10.1080/17452759.2018.1548069

M3 - Article

VL - 14

SP - 160

EP - 174

JO - Virtual and Physical Prototyping

T2 - Virtual and Physical Prototyping

JF - Virtual and Physical Prototyping

SN - 1745-2759

IS - 2

ER -