Injection 3D concrete printing in a carrier liquid - Underlying physics and applications to lightweight space frame structures

Lowke, Dirk; Vandenberg, Aileen; Alexandre, Pierre; Thomas, Amaury; Kloft, Harald; Hack, Norman

doi:10.1016/j.cemconcomp.2021.104169

Cited by 19 publications

(8 citation statements)

References 42 publications

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“…The progress in the field of architected construction materials in the past decade has largely been motivated by advancements in additive manufacturing across small to large scales [58][59][60][61][62][63][64]. This includes advancements in direct extrusion-based methods that facilitate relatively complex designs [65][66][67], powder-bed techniques that provide threedimensional control over the morphology [68,69], and hybrid 3D-printing of mold and casting of materials into bespoke geometries that enable alternative solutions to achieve spatial structures [70,71]. Extrusion-based techniques, in comparison to other often complex techniques, owing to their ease of adoption and widespread use across scales, have significantly facilitated the exploration of architected materials, particularly in the realm of cementitious materials (Fig.…”

Section: Recent Progress In the Field Across Construction Materialsmentioning

confidence: 99%

Perspectives in architected infrastructure materials

Moini

2024

RILEM Tech Lett

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This paper presents perspectives and progress in the emerging field of architected infrastructure materials. Recent developments in advanced and additive manufacturing with construction materials have led to new capabilities to define, design, and shape the internal arrangement and overall morphology of materials. In contrast to conventional casting techniques used in the construction of civil engineering materials, such advancements have allowed for purposeful designs of materials into specific morphologies across scales, referred to as architected infrastructure materials. Contrary to monolithic construction materials, architected materials present new opportunities to engineer enhanced mechanical properties and unique performance characteristics in civil infrastructure components through design. Here, we present an overview of the field and the research gaps in design, manufacturing, and materials mechanics. An overview of a few design opportunities, including bio-inspired strategies is discussed. Current advancements in the field are presented focusing on cement-based, non-hydraulic, and cementitious composite architected materials. The existing studies on bouligand, cellular, lattice, auxetic, tabulated, and gradient architected construction materials and their mechanically advantageous characteristics are reviewed. The future directions and perspectives for the field are outlined with respect to the current research gaps and upcoming opportunities.

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Section: Recent Progress In the Field Across Construction Materialsmentioning

confidence: 99%

Perspectives in architected infrastructure materials

Moini

2024

RILEM Tech Lett

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“…7,8 The latter avenue typically allows more variety in shapes, however, needs more involved production, which often demands methods such as 3D printing. [9][10][11] The structural assessments of prefabrication structures shall cover the overall strength. From this point the estimation of contact forces between segments may be processed.…”

Section: Introductionmentioning

confidence: 99%

“…Those may be repetitive or unique 7,8 . The latter avenue typically allows more variety in shapes, however, needs more involved production, which often demands methods such as 3D printing 9‐11 …”

Section: Introductionmentioning

confidence: 99%

CAD‐integrated parametric modular construction design

Teschemacher

Bletzinger

2023

Engineering Reports

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This publication presents a novel CAD‐integrated avenue for structural analyses of modular constructions, by applying the isogeometric analysis. The approach relies on trimming of segments from an original geometry and allows accordingly to introduce kinematics at the interfaces and to assess the connections of the parametrically defined modules. The proposed research is presented along some exemplary structures.

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“…Notice that sometimes equivalence is drawn between E3DCP and 3D concrete printing (3DCP), which should be avoided, as the latter is more appropriately referred to as “additive” according to the classification of [ 1 ]. In addition, the scope of E3DCP inherently excludes injection 3D concrete printing [ 6 ], smart dynamic casting [ 7 ], and shotcrete 3D concrete printing [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

A Review of the Extruder System Design for Large-Scale Extrusion-Based 3D Concrete Printing

et al. 2023

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Extrusion-based 3D concrete printing (E3DCP) has been appreciated by academia and industry as the most plausible candidate for prospective concrete constructions. Considerable research efforts are dedicated to the material design to improve the extrudability of fresh concrete. However, at the time of writing this paper, there is still a lack of a review paper that highlights the significance of the mechanical design of the E3DCP system. This paper provides a comprehensive review of the mechanical design of the E3DCP extruder system in terms of the extruder system, positioning system and advanced fittings, and their effects on the extrudability are also discussed by relating to the extrusion driving forces and extrusion resistive forces which may include chamber wall shear force, shaping force, nozzle wall shear force, dead zone shear force and layer pressing force. Moreover, a classification framework of the E3DCP system as an extension of the DFC classification framework was proposed. The authors reckoned that such a classification framework could assist a more systematic E3DCP system design.

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Injection 3D concrete printing in a carrier liquid - Underlying physics and applications to lightweight space frame structures

Cited by 19 publications

References 42 publications

Perspectives in architected infrastructure materials

Perspectives in architected infrastructure materials

CAD‐integrated parametric modular construction design

A Review of the Extruder System Design for Large-Scale Extrusion-Based 3D Concrete Printing

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