Examining the significance of infill printing pattern on the anisotropy of 3D printed concrete

Murcia, Daniel Heras; Genedy, Moneeb; Taha, M. M. Reda

doi:10.1016/j.conbuildmat.2020.120559

Cited by 61 publications

(15 citation statements)

References 43 publications

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“…The mixed material was manually put into the cache piece by piece with a shovel. [29], (b) a material bin with a size-varying nozzle tip [73], (c) a desktop printer with a V-shape material bin [75], (d) a printing system with a V-shape storage bin and a mixing blade [80], and (e) a printing nozzle with a local feeder [81].…”

Section: Local Feedermentioning

confidence: 99%

“…Figure 7. Local feeders in the existing studies, reprinted with permissions: (a) a V-shape sketch design material bin with a feeding open and a turn-able nozzle tip[29], (b) a material bin with a size-varying nozzle tip[73], (c) a desktop printer with a V-shape material bin[75], (d) a printing system with a V-shape storage bin and a mixing blade[80], and (e) a printing nozzle with a local feeder[81].…”

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confidence: 99%

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3D Printing Devices and Reinforcing Techniques for Extruded Cement-Based Materials: A Review

Cao

Cui

et al. 2022

Buildings

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The three-dimensional (3D) printing technique for cement-based materials has been actively investigated and utilized in civil engineering. However, there is no systematic review of the fabricating devices. This paper reviews the software and hardware for extrusion-based 3D concrete printing. Firstly, a dedicated tool path generating software is urgently needed to meet the cementitious printing applications and to improve printing quality with toolpath optimizations. Secondly, the existing printing equipment was summarized and discussed, concluding the pros and cons of various 3D motion systems, material systems, and nozzle units. Suitable choices for scientific research and engineering applications were recommended. The reinforcing techniques were categorized and concluded with the existing drawbacks and the research trend. A hybrid manufacturing system of 3D printing and the reinforcing technique was then proposed with a system diagram and flowchart.

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Section: Local Feedermentioning

confidence: 99%

mentioning

confidence: 99%

3D Printing Devices and Reinforcing Techniques for Extruded Cement-Based Materials: A Review

Cao

Cui

et al. 2022

Buildings

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“…Panda et al [ 56 ] noticed a porous interface when nozzle standoff distance was increased. Murcia et al [ 227 ] observed more porosity at the vertical interface of the layers than the horizontal interface of layers and attributed lower porosity at the horizontal interface to the compaction induced by the weight of the top layers. Rheology affects the porosity at the interface of layers.…”

Section: Microstructure Of 3d-printed Concretementioning

confidence: 99%

3D Concrete Printing: A Systematic Review of Rheology, Mix Designs, Mechanical, Microstructural, and Durability Characteristics

2021

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This paper provides a state-of-the-art report on the up-to-date research on the emerging 3D concrete printing technology from the concrete materials perspective. It reviews the recent research focused on understanding and characterizing the rheological necessities of the concrete printing process and discusses how the researchers are tailoring compatible mix proportions for the 3D concrete printing process by using eco-friendly binders, waste aggregates, chemical admixtures, and nano-additives. This paper systematically evaluates anisotropic behavior in the mechanical properties of printed concrete and establishes an order for anisotropic behavior in the compressive, flexural, and tensile strengths along three different axes (X, Y, and Z axes) of printed concrete. It evaluates the ratio of flexural strength to the compressive strength of printed concrete along the above three axes. This article explains the influence of variation of printing process parameters on the mechanical properties and discusses reinforcement approaches used for increasing structural performance. The microstructure at the interface of adjacent layers and also at the interface of the reinforcement-cement matrix is discussed. The recent research on the durability performance of printed concrete is critically discussed and future research needs for 3D concrete printing are identified in this paper.

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“…Apart from the mechanical part design, civil structure also adopted the additive manufacturing method for reducing time and cost of manufacturing process. Using Additive manufacturing, the concrete structure with different infill pattern was made and result no significant difference in compressive strength for the specified design printing [25]. Wave spring are more complex with infill pattern in design and manufacture using traditional methods.…”

Section: Introductionmentioning

confidence: 99%

Development and analysis of polymer-based wave spring response with different infill density

Gouda

2023

Preprint

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The development of wave spring has enhanced performance characteristics like load bearing capability, stiffness, energy absorption and energy release technique in a constrained space. The wave springs can be developed by considering the number of turns, waves, thickness, which can be easily adjusted to accommodate stronger force and to meet specific technical requirements as per the area of applications. Wave springs are complex in design and can be fabricated by additive manufacturing technique. Advanced manufacturing methods provides full design freedom to develop the wave spring of various geometry. Present work is focused to evaluate the Polypropylene wave spring stiffness and its load bearing capacity, which may be helpful in the application of smooth landing of drones and robotic structures, mechanical pressure valves and washers. Limited study of the polymer-based wave spring properties and its material behavior has been studied. The contemporary work establishes the computational and experimental analysis of crest-to-crest wave springs which are designed with honeycomb infill pattern with infill density of 100%, 90% and 80%. Maximum load bearing capacity and stiffness of the different designed wave springs are obtained through universal testing machine. From the experimental results the average load bearing capacity of PP 100%, PP 90% and PP 80% at 75% of compressible distance of crest-to-crest wave spring from cycle 1 to 10. The results of the 1st cycle load bearing capacity are 234.075 N, 181.31 N and 178.58N respectively.

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Examining the significance of infill printing pattern on the anisotropy of 3D printed concrete

Cited by 61 publications

References 43 publications

3D Printing Devices and Reinforcing Techniques for Extruded Cement-Based Materials: A Review

3D Printing Devices and Reinforcing Techniques for Extruded Cement-Based Materials: A Review

3D Concrete Printing: A Systematic Review of Rheology, Mix Designs, Mechanical, Microstructural, and Durability Characteristics

Development and analysis of polymer-based wave spring response with different infill density

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