Mechanical and macrostructural properties of 3D printed concrete dosed with steel fibers under different loading direction

Singh, Amardeep; Liu, Qiong; Lyu, Qifeng

doi:10.1016/j.conbuildmat.2022.126616

Cited by 69 publications

(11 citation statements)

References 45 publications

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“…This clearly indicates the importance of introducing fibers into 3D printing process. Sing et al [118] used 200 µm diameter 13 mm long steel fibers up to 1% vol. and revealed reduced slump and improved buildability with the addition of nano clay, which acts as an interlocked web due to an increase in the friction and adhesion among particles.…”

Section: Fibers For 3d Printingmentioning

confidence: 99%

“…In the early studies, the researchers initially faced challenges in the decision-making process of selecting fiber size, optimum proportion, and correct print head speed to avoid any blockages with the available nozzle size while achieving the required fresh and hardened properties and maintaining consistency for their intended mix design. Table 2 summarizes existing studies that successfully printed concrete with the addition of fibers such as steel [118,133], PE [5,121,134], PP [13,109,135], PVA [100,110], glass and carbon [136]. This may help researchers lay a strong foundation for proposing and selecting suitable fibers for 3DCP.…”

Section: Fibers For 3d Printingmentioning

confidence: 99%

See 1 more Smart Citation

Advancement in Sustainable 3D Concrete Printing: A Review on Materials, Challenges, and Current Progress in Australia

Gamage,

Fawzia,

Zahra

et al. 2024

Buildings

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Three-dimensional concrete printing (3DCP) is a sustainable and green approach for rapid construction with the ability to create complex shapes to preserve the intended aesthetic appearance for an affordable cost. Even after a decade of attempts, there are many limitations and challenges to applying this technology for constructions without borders. The lack of guidelines for mix designs, quality control procedures during extrusion, printing and building phases, compatibility of material with extruder, standard testing, and guidelines to verify suitability of mixture with respect to the application and exposure conditions and limited machine capacity are several areas to be addressed for applications without borders. The development of 3DCP applications as a sustainable and green technology is another challenging task due to high Portland cement consumption in 3DCP. However, reducing the high usage of ordinary Portland cement (OPC) with pozzolanic waste materials replacement and environmentally friendly cement indicates the direction of moving 3DCP into a sustainable pathway. The authors reviewed more than 200 refereed articles published on materials and techniques in 3DCP. Inconsistency in disseminating knowledge in research articles has hindered the creation of a monolithically connected chain of research efforts and findings in accelerating the development and adoption of this technology. This paper summarizes the common approach to developing 3DCP mix designs and identifies the key areas for the future development of materials and techniques and challenges to be addressed for the global adoption of 3DCP. The current progress and challenges in the context of Australia’s construction industry and future trends for the acceptance of 3DCP are also reviewed.

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Section: Fibers For 3d Printingmentioning

confidence: 99%

Section: Fibers For 3d Printingmentioning

confidence: 99%

Advancement in Sustainable 3D Concrete Printing: A Review on Materials, Challenges, and Current Progress in Australia

Gamage,

Fawzia,

Zahra

et al. 2024

Buildings

View full text Add to dashboard Cite

show abstract

“…Many scholars start with material proportion designs, use experimental validation methods, and develop cementbased materials suitable for 3D printing. They also study and analyze their materials' work performance and mechanical properties, providing a large amount of experimental data for the development of 3D printing materials in architecture [18,[27][28][29]. Some scholars also study the influence of printing parameters such as printing rate and printing time interval on concrete properties from the perspective of the 3D printing process.…”

Section: Analysis Of Research Hotspotmentioning

confidence: 99%

Research Progress and Trend Analysis of Concrete 3D Printing Technology Based on CiteSpace

Wang,

Liu,

Hou

et al. 2024

Buildings

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As an emerging method in engineering construction, concrete 3D printing has experienced rapid development in recent years due to its advantages in terms of automation, digitization, and intelligence. In order to comprehensively understand the research progress of concrete 3D printing technology, the literature on concrete 3D printing technology published in the Web of Science core database from 2014 to 2023 is used as a data source, and the visualization tool CiteSpace is utilized to research and analyze these results from the following aspects: number of publications, collaboration networks, research hotspots, and evolutionary trends. The results show that the number of publications in the field of concrete 3D printing technology has been increasing from year to year, with a gradually accelerating growth rate. The top three journals in terms of publication volume are Construction and Building Materials, Cement and Concrete Composites, and Materials. Research in the field of concrete 3D printing technology is mainly conducted through collaborations among research groups or institutions, while there are relatively fewer interactions among researchers from different institutions, regions, and countries. The current research direction mainly focuses on 3D printing materials, process parameters, and technology. The research content has progressed from initial explorations of concrete 3D printing technology to detailed studies of 3D printing materials and their performance. Overall, the research in this field continues to add further details to our knowledge of concrete 3D printing technology, and its application in engineering is gradually increasing. The automated, digitized, and intelligent construction methods of concrete 3D printing technology serve as a powerful driving force for the transformation and upgrading of the field of architecture.

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“…The other challenge is to evaluate the CSA-induced durability of cementitious green building materials (CGBMs), such as 3D-printed concrete and recycled aggregate concrete. Due to the printing method, mineral type and content, recycled aggregate quality (loose structure or high sulfate content), 3D-printed concrete [120,121], and recycled aggregate concrete [122,123], low mechanical properties and high porosity may show poor sulfateresistant properties. At present, relevant research focuses on the effect of these material properties on structural characteristics, while the models to evaluate the durability of CGBMs subjected to CSA are few reported.…”

Section: Challengesmentioning

confidence: 99%

A Review on the Transport-Chemo-Mechanical Behavior in Concrete under External Sulfate Attack

et al. 2023

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Cementitious concrete structures serving in sulfate environments suffer from serious durability challenges caused by chemical sulfate attacks (CSA), which lead to the volume expansion, cracking, and spalling of concrete and the early failure of structures. CSA on concrete involves the behaviors of ion transport, chemical reactions, the crystallization of reaction products, microstructural damage to the cement matrix, and the macroscopic deterioration of concrete, namely the transport-chemo-mechanical behaviors. This paper first introduces the reaction products, such as gypsum, ettringite, brucite, and thaumasite, between sulfate and concrete under different environmental conditions and their formation mechanism. Then, aiming at the ettringite type CSA, the theories of volume increase and crystallization pressure are elaborated to explain it-induced concrete degradation. Additionally, the crystallization pressure theory is used to describe the cracking behavior in the microstructure slurry caused by the ettringite crystal filling pore. Finally, a series of transport-chemo-mechanical models for ettringite type CSA are displaced module by module. It includes the sulfate diffusion-reaction model, the free expansion of concrete, and equivalent expansive force in concrete related to the reaction behavior: the model for chemo-mechanical behavior in concrete caused by CSA. These models can be used to analyze the distribution of sulfate ions and the reaction product content, expansive stress and strain in the concrete, and the cracking and spalling degree of the concrete, which is beneficial to evaluate the durability of concrete structures serving permanently in a sulfate environment.

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Mechanical and macrostructural properties of 3D printed concrete dosed with steel fibers under different loading direction

Cited by 69 publications

References 45 publications

Advancement in Sustainable 3D Concrete Printing: A Review on Materials, Challenges, and Current Progress in Australia

Advancement in Sustainable 3D Concrete Printing: A Review on Materials, Challenges, and Current Progress in Australia

Research Progress and Trend Analysis of Concrete 3D Printing Technology Based on CiteSpace

A Review on the Transport-Chemo-Mechanical Behavior in Concrete under External Sulfate Attack

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