Improving performance of additive manufactured (3D printed) concrete: A review on material mix design, processing, interlayer bonding, and reinforcing methods

Baduge, Shanaka Kristombu; Navaratnam, Satheeskumar; Abu-Zidan, Yousef; McCormack, Tom; Nguyen, Kevin; Mendis, Priyan; Zhang, Kevin; Aye, Lu

doi:10.1016/j.istruc.2020.12.061

Cited by 71 publications

(15 citation statements)

References 113 publications

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“…Moreover, to fully utilize such a new technique, a deeper understanding of the process, from the design phase to the postprocessing phase, is required. However, researchers are focusing more on the structural performance of 3DPC structures, and numerous research studies are ongoing worldwide [18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Energy Performance of 3D-Printed Concrete Walls: A Numerical Study

et al. 2021

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Three-dimensional-printed concrete (3DPC), which is also termed as digital fabrication of concrete, offers potential development towards a sustainable built environment. This novel technique clearly reveals its development towards construction application with various global achievements, including structures such as bridges, houses, office buildings, and emergency shelters. However, despite the enormous efforts of academia and industry in the recent past, the application of the 3DPC method is still challenging, as existing knowledge about its performance is limited. The construction industry and building sectors have a significant share of the total energy consumed globally, and building thermal efficiency has become one of the main driving forces within the industry. Hence, it is important to study the thermal energy performance of the structures developed using the innovative 3DPC technique. Thermal characterization of walls is fundamental for the assessment of the energy performance, and thermal insulation plays an important role in performance enhancements. Therefore, in this study, different wall configurations were examined, and the conclusions were drawn based on their relative energy performance. The thermal performance of 32 different 3DPC wall configurations with and without cavity insulation were traced using validated finite element models by measuring the thermal transmittance value (U-value). Our study found that the considered 3DPC cavity walls had a low energy performance, as the U-values did not satisfy the standard regulations. Thus, their performance was improved with cavity insulation. The simulation resulted in a minimum thermal transmittance value of 0.34 W/m2·K. Additionally, a suitable equation was proposed to find the U-values of 100 mm-thick cavity wall panels with different configurations. Furthermore, this study highlights the importance of analytical and experimental solutions as an outline for further research

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Section: Introductionmentioning

confidence: 99%

Energy Performance of 3D-Printed Concrete Walls: A Numerical Study

et al. 2021

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“…Therefore, 3D Concrete Printing (3DCP) structural elements have to be reinforced to increase their performance. Thus, 3DCP required new techniques to improve the ductility so that it can be used in areas subject to strong lateral loads such as earthquakes [26][27][28]. Installing reinforcement in 3DCP is complicated because the printing process requires enough space above the layer being extruded to allow for the movement of the nozzle [29].…”

Section: Introductionmentioning

confidence: 99%

Performance Study of Buried Pipelines under Static Loads

2022

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The possibility of servicing lifelines such as highways, railways, pipelines, and tunnels is of great social importance. The characteristic that separates the buried pipeline from other structures is that its dimensions are very long compared to its other dimensions. Ground vibrations caused by earthquakes, construction activities, traffic, explosions, and machinery can damage these structures. Lifeline integrity can be compromised in two ways: (1) direct damage due to excessive dynamic loading of the lifeline, and (2) indirect damage due to soil failures such as liquefaction, slope instability, and differential settlements. 3D printing (also known as additive manufacturing) is an advanced manufacturing process that can automatically produce complex geometric shapes from a 3D computer-aided design model without tools, molds, or fixtures. This automated manufacturing process has been applied in diverse industries today because it can revolutionize the construction industry with expected benefits. This research study on the performance of buried pipelines under static loads to the structure's safety against the possible development of progressive failure. This research study includes a numerical study, where it was studied many parameters to value the performance of the pipeline. The parameters are (a) the material of the pipeline (steel, traditional concrete, and 3D concrete printed), (b) the thickness of the pipeline (20, 30, and 40 mm), and (c) soil type (moist sandy soil, saturated sandy soil, moist cohesive soil, and saturated cohesive soil). Different results were obtained depending on the type of soil where all pipelines materials' behavior was similar in the case of moist soil. Doi: 10.28991/CEJ-2022-08-01-01 Full Text: PDF

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“…Three-dimensional printing technology has unique advantages over traditional technologies, such as its controllable and complicated structure, complicated geometry, high degree of automation, and safety processing [ 6 , 7 ]. Therefore, additive manufacturing has been widely studied and applied in biological [ 8 , 9 , 10 ], ceramics [ 11 , 12 , 13 , 14 ], metal forming [ 15 , 16 ], and concrete [ 17 , 18 , 19 ] spheres, as well as in other fields [ 20 ]. According to the standards set by the Subcommittee of materials and Testing Association of America (ASTM), additive manufacturing technology is divided into seven categories [ 21 , 22 ].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Energetic Composites with 91% Solid Content by 3D Direct Writing

Deng

et al. 2021

Micromachines

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Direct writing is a rapidly developing manufacturing technology that is convenient, adaptable and automated. It has been used in energetic composites to manufacture complex structures, improve product safety, and reduce waste. This work is aimed at probing the formability properties and combustion performances of aluminum/ammonium perchlorate with a high solid content for direct writing fabrication. Four kinds of samples with different solid content were successfully printed by adjusting printing parameters and inks formulas with excellent rheological behavior and combustion properties. A high solid content of 91% was manufactured and facile processed into complex structures. Micromorphology, rheology, density, burning rate, heat of combustion and combustion performance were evaluated to characterized four kinds of samples. As the solid content increases, the density, burning rate and heat of combustion are greatly enhanced. Based on 3D direct writing technology, complex energetic 3D structures with 91% solid content are shaped easier and more flexibly than in traditional manufacturing process, which provides a novel way for the manufacture of complicated structures of energetic components.

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Improving performance of additive manufactured (3D printed) concrete: A review on material mix design, processing, interlayer bonding, and reinforcing methods

Cited by 71 publications

References 113 publications

Energy Performance of 3D-Printed Concrete Walls: A Numerical Study

Energy Performance of 3D-Printed Concrete Walls: A Numerical Study

Performance Study of Buried Pipelines under Static Loads

Fabrication of Energetic Composites with 91% Solid Content by 3D Direct Writing

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