Design, microstructure and mechanical characterization of Ti6Al4V reinforcing elements for cement composites with fractal architecture

Farina, Ilenia; Goodall, Russell; Hernández-Nava, Everth; Filippo, Andrea di; Colangelo, Francesco

doi:10.1016/j.matdes.2019.107758

Cited by 34 publications

(19 citation statements)

References 42 publications

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“…unreinforced) mortar specimens. Farina et al [18,24,25] also studied the effect of 3D printed metallic reinforcement in mortar. Their work involved the use of electron beam melting (EBM) to manufacture a The Koch snowflake can be built up iteratively, in a sequence of stages.…”

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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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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“…Due to the recent advancements in the field of metal additive manufacturing (AM), several processes such as: (a) Selective Laser Melting (SLM) [ 16 ], (b) Electron Beam Melting (EBM) [ 17 , 18 ], (c) Selective Laser Sintering (SLS) [ 19 ], (d) Direct Metal Laser Deposition (DMLD) [ 20 ] and (e) Ink jet 3D printing and binder jetting have been extensively explored to fabricate high porosity functional metal parts with desired pore characteristics. Among these AM processes, SLM, EBM, SLS and DMLD are energy-based processes that use high energy laser/electron beam to melt or sinter the metal powders layer-by-layer to form the 3D parts.…”

Section: Introductionmentioning

confidence: 99%

Binder Jetting Additive Manufacturing of High Porosity 316L Stainless Steel Metal Foams

Meenashisundaram

Nai

et al. 2020

Materials

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High porosity (40% to 60%) 316L stainless steel containing well-interconnected open-cell porous structures with pore openness index of 0.87 to 1 were successfully fabricated by binder jetting and subsequent sintering processes coupled with a powder space holder technique. Mono-sized (30 µm) and 30% (by volume) spherically shaped poly(methyl methacrylate) (PMMA) powder was used as the space holder material. The effects of processing conditions such as: (1) binder saturation rates (55%, 100% and 150%), and (2) isothermal sintering temperatures (1000 ○C to 1200 ○C) on the porosity of 316L stainless steel parts were studied. By varying the processing conditions, porosity of 40% to 45% were achieved. To further increase the porosity values of 316L stainless steel parts, 30 vol. % (or 6 wt. %) of PMMA space holder particles were added to the 3D printing feedstock and porosity values of 57% to 61% were achieved. Mercury porosimetry results indicated pore sizes less than 40 µm for all the binder jetting processed 316L stainless steel parts. Anisotropy in linear shrinkage after the sintering process was observed for the SS316L parts with the largest linear shrinkage in the Z direction. The Young’s modulus and compression properties of 316L stainless steel parts decreased with increasing porosity and low Young’s modulus values in the range of 2 GPa to 29 GPa were able to be achieved. The parts fabricated by using pure 316L stainless steel feedstock sintered at 1200 ○C with porosity of ~40% exhibited the maximum overall compressive properties with 0.2% compressive yield strength of 52.7 MPa, ultimate compressive strength of 520 MPa, fracture strain of 36.4%, and energy absorption of 116.7 MJ/m3, respectively. The Young’s modulus and compression properties of the binder jetting processed 316L stainless steel parts were found to be on par with that of the conventionally processed porous 316L stainless steel parts and even surpassed those having similar porosities, and matched to that of the cancellous bone types.

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“…Moreover, the development of complex structures through AM technologies have mostly been studied in the field of construction using reinforced composite cement. However, studies on the effect of quarry waste fillers on the properties of polymeric composites for 3D printing is limited [ 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 ].…”

Section: Introductionmentioning

confidence: 99%

Pozzolan Based 3D Printing Composites: From the Formulation Till the Final Application in the Precision Irrigation Field

2020

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A new eco-composite polymer for material extrusion fabrication based on fine fraction pozzolan waste was developed. In addition, the composite materials obtained were used to produce a self-watering pot with complex geometry and a permeable porous part to regulate the passage of water from the storage area to the roots of the plant. Moreover, the system was devised with a cover characterized by a UV-B barrier film. The results have shown the possibility of the 3D printing of complex geometric parts as microporous structures or thin films using a composite based on poly lactic acid (PLA) and pozzolan. The pozzolan has an effect of reinforcement for the composite and at the same time improves the cohesion between the layers of the part during printing.

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Design, microstructure and mechanical characterization of Ti6Al4V reinforcing elements for cement composites with fractal architecture

Cited by 34 publications

References 42 publications

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

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

Binder Jetting Additive Manufacturing of High Porosity 316L Stainless Steel Metal Foams

Pozzolan Based 3D Printing Composites: From the Formulation Till the Final Application in the Precision Irrigation Field

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