scholarly journals Harnessing 3D Printing of Plastics in Construction—Opportunities and Limitations

Materials ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4547
Author(s):  
Aneta Skoratko ◽  
Jacek Katzer
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Construction Industry ◽  
Practical Applications ◽  
Spatial Reinforcement ◽  
Permanent Formwork ◽  
Recent Developments ◽  
The Subject ◽  
Concrete Elements

Additive manufacturing has been of increasing interest to the construction industry for the last ten years. The subject of the research is the printing of concrete, metals, and plastics. In their analysis and research, authors have focused on printing plastics. 3D printing of reinforcement of concrete elements made of plastics can significantly improve the efficiency of their erection, reduce the amount of waste, and optimize their shape. In this paper, recent developments in the 3D printing of plastics for construction are reviewed. Various applications were discussed, including unconventional spatial reinforcement (impossible to achieve in a traditional way), printed permanent formwork, etc. The challenges for further research and practical applications of such solutions were also discussed.

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

2020 ◽  
Vol 5 ◽  
pp. 17-25
Author(s):  
Branko Savija
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Construction Industry ◽  
Waste Reduction ◽  
Cementitious Composites ◽  
Vascular Networks ◽  
Practical Applications ◽  
Challenges And Opportunities ◽  
Recent Developments ◽  
Construction Efficiency

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.

scholarly journals Hierarchical ordering in light-triggered additive manufacturing

2020 ◽  
Vol 11 (46) ◽  
pp. 7316-7329
Author(s):  
Joël Monti ◽  
Eva Blasco
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Future Prospects ◽  
Structural Hierarchy ◽  
Recent Developments ◽  
Hierarchical Ordering

Herein, recent developments in the 3D printing of materials with structural hierarchy and their future prospects are reviewed. It is shown that increasing the extent of ordering, is essential to access novel properties and functionalities.

scholarly journals A comprehensive review of recent developments in 3D printing technique for ceramic membrane fabrication for water purification

RSC Advances ◽  
2019 ◽  
Vol 9 (29) ◽  
pp. 16869-16883 ◽  
Author(s):  
Hitesh Dommati ◽  
Saikat Sinha Ray ◽  
Jia-Chang Wang ◽  
Shiao-Shing Chen
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Water Purification ◽  
Ceramic Membrane ◽  
Comprehensive Review ◽  
Membrane Fabrication ◽  
Printing Technique ◽  
Recent Developments ◽  
Competitive Prices ◽  
3D Printing Technique

Additive manufacturing (AM), which is also commonly known as 3D printing, provides flexibility in the manufacturing of complex geometric parts at competitive prices and within a low production time.

scholarly journals Pattern, process, inference and prediction in extinction biology

2017 ◽  
Vol 13 (1) ◽  
pp. 20160828 ◽  
Author(s):  
Barry W. Brook ◽  
John Alroy
Keyword(s):  
Natural Science ◽  
Evolutionary History ◽  
Extinction Risk ◽  
Special Issue ◽  
Effective Protection ◽  
Practical Applications ◽  
Recent Developments ◽  
History Of ◽  
The Subject ◽  
Patterns And Processes

Extinction is a key feature of the evolutionary history of life, and assessments of extinction risk are essential for the effective protection of biodiversity. The goal in assembling this special issue of Biology Letters was to highlight problems and questions at the research frontier of extinction biology, with an emphasis on recent developments in the methodology of inferring the patterns and processes of extinction from a background of often noisy and sparse data. In selecting topics, we sought to illustrate how extinction is not simply a self-evident phenomenon, but the subject of a dynamic and quantitatively rigorous field of natural science, with practical applications to conservation.

scholarly journals A Short Overview of Recent Developments on Antimicrobial Coatings Based on Phytosynthesized Metal Nanoparticles

Coatings ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 787 ◽  
Author(s):  
Irina Fierascu ◽  
Ioana Catalina Fierascu ◽  
Cristina Elena Dinu-Pirvu ◽  
Radu Claudiu Fierascu ◽  
Valentina Anuta ◽  
...  
Keyword(s):  
Metallic Nanoparticles ◽  
Fruits And Vegetables ◽  
Antimicrobial Properties ◽  
Good Alternative ◽  
Antimicrobial Coatings ◽  
Practical Applications ◽  
Antimicrobial Potential ◽  
Recent Developments ◽  
The Subject ◽  
Efficient Option

The phytosynthesis of metallic nanoparticles represents an exciting new area of research, with promising perspectives, gaining in the last decades an increasing importance. Nanotechnology represents an important tool and an efficient option for obtaining particles with controlled morphology and shapes, phytosynthesized nanoparticles (NPs) being a good alternative to remove hazardous reagents. Due to the practical applications of the phytosynthesized nanoparticles, which are mainly associated with their antimicrobial potential, the abundance of scientific literature in this domain is given by researches in the phytosynthesis of metallic nanoparticles (3654 articles) and the evaluation of their antimicrobial properties (2338 papers). The application of phytosynthesized nanoparticles as antimicrobial coatings represented the subject of only 446 works, which lead us to the subject of this review paper. Application of antimicrobial coatings containing phytosynthesized nanoparticles for the development of antimicrobial textiles, other biomedical applications, protection of food (including fruits and vegetables), as well as for other types of applications based on their antimicrobial potential are covered by the present review.

Digital grotesque: Towards a micro-tectonic architecture

2013 ◽  
Vol 5 (2) ◽  
pp. 194-201
Author(s):  
Michael Hansmeyer ◽  
Benjamin Dillenburger
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Large Scale ◽  
New Technologies ◽  
Computational Design ◽  
Small Scale ◽  
Printing Technology ◽  
Recent Developments ◽  
Complex Forms ◽  
Specific Experiment

Computational design allows for architecture with an extraordinary degree of topographical and topological complexity. Limitations of traditional CNC technologies have until recently precluded this architecture from being fabricated. While additive manufacturing has made it possible to materialize these complex forms, this has occurred only at a very small scale. In trying to apply additive manufacturing to the construction of full-scale architecture, one encounters a dilemma: existing large-scale 3D printing methods can only print highly simplified shapes with rough details, while existing high-resolution technologies have limited print spaces, high costs, or material attributes that preclude a structural use. This paper provides a brief background on additive manufacturing technology and presents recent developments in sand-printing technology that overcome current 3D printing restrictions. It then presents a specific experiment, Digital Grotesque project, which is the first application of 3D sand-printing technology at an architecture scale. It describes how this project attempts to exploit the potentials of these new technologies.

Additive manufacturing as an emerging technology for fabrication of microelectromechanical systems (MEMS)

2019 ◽  
Vol 2 (2) ◽  
pp. 175-197 ◽  
Author(s):  
Sanjay Kumar ◽  
Pulak Bhushan ◽  
Mohit Pandey ◽  
Shantanu Bhattacharya
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Microelectromechanical Systems ◽  
Manufacturing Sector ◽  
Process Improvements ◽  
Recent Success ◽  
Mems Fabrication ◽  
Recent Developments ◽  
Potential Applications ◽  
Printing Processes

The recent success of additive manufacturing processes (also called, 3D printing) in the manufacturing sector has led to a shift in the focus from simple prototyping to real production-grade technology. The enhanced capabilities of 3D printing processes to build intricate geometric shapes with high precision and resolution have led to their increased use in fabrication of microelectromechanical systems (MEMS). The 3D printing technology has offered tremendous flexibility to users for fabricating custom-built components. Over the past few decades, different types of 3D printing technologies have been developed. This article provides a comprehensive review of the recent developments and significant achievements in most widely used 3D printing technologies for MEMS fabrication, their working methodology, advantages, limitations, and potential applications. Furthermore, some of the emerging hybrid 3D printing technologies are discussed, and the current challenges associated with the 3D printing processes are addressed. Finally, future directions for process improvements in 3D printing techniques are presented.

scholarly journals The Effect of Deviation Due to the Manufacturing Accuracy in the Parameters of an MPP on Its Acoustic Properties: Trial Production of MPPs of Different Hole Shapes Using 3D Printing

Acoustics ◽  
2020 ◽  
Vol 2 (3) ◽  
pp. 605-616
Author(s):  
Kimihiro Sakagami ◽  
Midori Kusaka ◽  
Takeshi Okuzono ◽  
Shinsuke Nakanishi
Keyword(s):  
Additive Manufacturing ◽  
Pilot Study ◽  
3D Printing ◽  
Low Cost ◽  
Normal Incidence ◽  
Acoustic Properties ◽  
3D Printer ◽  
Recent Developments ◽  
Manufacturing Accuracy ◽  
Basic Studies

In this study, we discuss the effect of the manufacturing accuracy of a microperforated panel (MPP) produced by 3D printers on acoustic properties through measured and calculated results as a pilot study. The manufacturing costs of MPPs have long been one of their shortcomings; however, with recent developments in the manufacturing process, low-cost MPPs are now available. In a further attempt at reducing the cost, 3D printing techniques have recently been considered. Cases of trial production of MPPs manufactured by 3D printing have been reported. When introducing such new techniques, despite the conventional microdrill procedure, manufacturing accuracy can often become an issue. However, there are few studies reporting the effect of manufacturing accuracy on the acoustic properties in the case of 3D-printed MPPs. Considering this situation, in this pilot study, we attempted to produce MPPs with circular and rectangular perforations using a consumer 3D printer of the additive manufacturing type. The hole sizes of the specimens were measured, and the accuracy was evaluated. The normal incidence absorption coefficient and specific impedance were measured using an impedance tube. The measured results were compared with the theoretical values using Guo’s model. Through these basic studies, the MPPs produced by an additive manufacturing 3D printer demonstrated good sound absorption performance; however, due to the large deviations of parameters, the agreement with the theoretical values was not good, which suggests that it is difficult to predict the acoustic properties of MPPs made by a consumer-grade additive manufacturing 3D printer.

Applicability and integration of concrete additive manufacturing in construction industry: A case study

2021 ◽  
pp. 095440542098610
Author(s):  
Mohamed Ramadany ◽  
Mohamed Saad Bajjou
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Construction Industry ◽  
State Of The Art ◽  
Construction Sector ◽  
Key Factors ◽  
Concrete Material ◽  
New Challenges ◽  
Printing Processes

The spread of additive manufacturing in recent years has broadened the sector of applications, namely in the construction field. This technology enables new functionalities and opportunities to be considered for the construction industry. Indeed, 3D printing processes can directly or indirectly affect the concrete material. Besides the printing processes for concrete structures, there are other indirect uses of 3D concrete printing, such as the manufacture of molds and formwork. However, its integration raises new challenges. This paper is first devoted to the state-of-the-art regarding the use of additive manufacturing in construction through a bibliographical study and an overview of various experiences in different countries. Secondly, the opportunities of such technologies for the construction sector will be discussed. Then, the issues and challenges related to the applicability and integration of concrete additive manufacturing will be highlighted. Finally, a diagnosis of the applicability and integration of concrete additive manufacturing has been made by analyzing the results of a survey of Moroccan professionals. The objective is to raise and identify key factors for successful integration.

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