Properties of concrete elements with 3-D printed formworks which substitute steel reinforcement

Katzer, Jacek; Szatkiewicz, Tomasz

doi:10.1016/j.conbuildmat.2019.03.204

Cited by 45 publications

(33 citation statements)

References 7 publications

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“…Key properties of the ABS filament given by the producer are presented in Table 2 . The reasoning why the ABS filament was chosen and its properties were thoroughly described in a previous publication [ 19 ].…”

Section: Methodsmentioning

confidence: 99%

“…In contrast, 3D printed polymer reinforcement is almost limitless in the case of its geometry and spacing (e.g., 3D printed formwork playing the role of reinforcement). This concept was proved by authors during the previous research program dedicated to 3D printed polymer reinforcement which played a role of traditional reinforcement [ 19 ]. The success of the previous research program encouraged authors to prepare a new one described in this paper.…”

Section: Introductionmentioning

confidence: 99%

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Effect of 3D Printed Spatial Reinforcement on Flexural Characteristics of Conventional Mortar

Katzer

Szatkiewicz

2020

Materials

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In their fourth decade of development, additive manufacturing technologies are slowly entering research programs dedicated to building materials. While the majority of research effort is focused on using 3D printing of concrete, the authors propose using the technology for creation of spatial plastic reinforcement. Obviously, the strength properties of a 3D printed polymer are much lower than those of steel. Nevertheless, the unconventional spatial shape of a 3D printed reinforcement can substitute for much of the lower mechanical performance of polymer. Flexural characteristics of a cement mortar prism specimen reinforced by hexagon spatial elements were tested and analyzed in this paper. The hexagonal geometric shape was chosen due to its high rigidness. It was proven that it is possible to efficiently reinforce concrete beams by spatial 3D printed polymer elements. Directions of needed research were pointed and discussed.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of 3D Printed Spatial Reinforcement on Flexural Characteristics of Conventional Mortar

Katzer

Szatkiewicz

2020

Materials

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“…ABS is not a user friendly filament due to its tendency to delamination, possible after-printing shrinkage, and curling up at the ends of printed longer elements. Nevertheless, the filament proved to be very effective in case of robust 3D printed reinforcing elements for cement composites in previous research programs [ 6 , 10 ]. Its high mechanical properties together with the considerable resistance to chemical aggression were also a factor while choosing a filament type for the research program.…”

Section: Materials and Design Of Experimentsmentioning

confidence: 99%

“…Katzer and Szatkiewicz [ 10 ] proposed 3D printed plastic formwork for the creation of beams. The plastic formwork, after casting concrete, stays in place and plays the role of reinforcement of a concrete element.…”

Section: Introductionmentioning

confidence: 99%

Concept of Using 3D Printing for Production of Concrete–Plastic Columns with Unconventional Cross-Sections

Katzer

Skoratko

2021

Materials

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A concept of concrete–plastic columns was presented in the paper. As a proof of concept, a research program was conducted. Seven different cross-sections of columns formwork were 3D printed using plastic. The cross-sections represented three types of columns’ shapes: most common, rare, and impossible to be realized using traditional formworks (based on fractals). Prepared plastic formworks were filled with cement mortar playing the role of ordinary concrete. After 28 days of curing, the load–strain characteristics of all the concrete columns were tested. Achieved results were discussed. It was proven that concrete–plastic columns were characterized by quasi-plastic behavior while being ultimately destroyed. Columns with fractal-based cross-sections sustained the largest strains while maintaining a significant part of the maximum load. The achieved results proved that it is possible to completely omit traditional steel rebar-stirrup reinforcement. The future direction of needed research should cover larger columns and other concrete–plastic elements. Using fiber-reinforced concrete for the creation of concrete–plastic elements should be also tested.

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“…Stay-in-place formworks made using different materials for concrete elements have been proposed in the literature, including SHCC for crack width control [19], textile reinforced concrete for shear reinforcement [20], fiber reinforced polymer for column confinement [21], and knitted textile for shell bridges [22]. Building upon these developments and 3D printing technology, Katzer and Szatkiewicz [23] proposed a different approach: by means of 3D printing, a stay-in-place plastic formwork can be created, which would also function as flexural and shear reinforcement. The formwork could also contain additional reinforcing elements, such as ribs (Fig.…”

Section: Discontinuous Reinforcementmentioning

confidence: 99%

Use of 3D printing to create multifunctional cementitious composites: review, challenges and opportunities

Šavija

2020

RILEM Tech Lett

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Additive manufacturing has been a topic of interest in the construction industry for the past decade. 3D printing of concrete structures promises great improvements in construction efficiency, waste reduction, and shape optimization. Another field where additive manufacturing offers opportunities is on the material level of cementitious composites. Techniques developed in other fields can be used to create multifunctional cementitious composites beyond what is possible with conventional technologies. This letter reviews recent developments in the field. Different applications are discussed: creating reinforcement for cementitious composites, creating capsules and vascular networks, and cementitious composites with superior mechanical behavior. Challenges for further research and practical applications of such materials are also discussed.

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Properties of concrete elements with 3-D printed formworks which substitute steel reinforcement

Cited by 45 publications

References 7 publications

Effect of 3D Printed Spatial Reinforcement on Flexural Characteristics of Conventional Mortar

Effect of 3D Printed Spatial Reinforcement on Flexural Characteristics of Conventional Mortar

Concept of Using 3D Printing for Production of Concrete–Plastic Columns with Unconventional Cross-Sections

Use of 3D printing to create multifunctional cementitious composites: review, challenges and opportunities

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