scholarly journals Development of 3D Concrete Extrusion Nozzle for Producing Free-form Concrete Panels

2021 ◽  
Vol 12 (6) ◽  
pp. 427-436
Author(s):  
Ji-Yeong, Yun Et.al
Keyword(s):  
3D Printing ◽  
Construction Industry ◽  
Industrial Revolution ◽  
Production Equipment ◽  
Free Form ◽  
Innovative Technology ◽  
Production Sector ◽  
Construction Automation ◽  
Concrete Panels ◽  
Opening And Closing

There has been an increase in demand for free-form building through the development of advanced technologies, and the fourth industrial revolution has become a worldwide trend, thereby changing the construction industry. In particular, in the case of the free-form architecture sector, development of 3D printing technologies has been ongoing for construction automation. According to such trends, this study develops an FCP production equipment using 3D printing technologies. The FCP production equipment in this study is made up of mould equipment and 3D printer. It is different from existing 3D printing technologies so in this study 3D concrete extrusion nozzle must be developed for producing FCP. Basic design suitable to such requirements is proposed.  Applicability of the proposed design is checked and the nozzle form is concretized to draft the final drawing. In this study, slit-type opening and closing device for accurate extrusion stoppage of concrete and screw-type nozzle for adjusting pressure and extrusion speed were applied for the nozzle. This is expected to be innovative technology for the FCP production sector.

scholarly journals Building Envelope Prefabricated with 3D Printing Technology

2021 ◽  
Vol 13 (16) ◽  
pp. 8923
Author(s):  
Stelladriana Volpe ◽  
Valentino Sangiorgio ◽  
Andrea Petrella ◽  
Armando Coppola ◽  
Michele Notarnicola ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Industrial Revolution ◽  
Potassium Phosphate ◽  
Digital Fabrication ◽  
Building Envelope ◽  
Manufacturing Technology ◽  
Construction Automation ◽  
Additive Manufacturing Technology ◽  
Precast Elements

The Fourth Industrial Revolution represents the beginning of a profound change for the building sector. In the last decade, the perspective of shapes, materials, and construction techniques is evolving fast due to the additive manufacturing technology. On the other hand, even if the technology is growing fast and several 3D printed buildings are being developed worldwide, the potential of concrete 3D printing in building prefabrication remains unexplored. Consequently, the application of new digital fabrication technologies in the construction industry requires a redesign of the construction process and its components. This paper proposes a novel conception, design, and prototyping of a precast building envelope to be prefabricated with extrusion-based 3D concrete printing (3DCP). The new design and conception aim to fully exploit the potential of 3D printing for prefabricated components, especially in terms of dry assembly, speed of implementation, reusability, recyclability, modularity, versatility, adaptability, and sustainability. Beyond the novel conceptual design of precast elements, the research investigated the 3D printable cementitious material based on a magnesium potassium phosphate cement (MKPC), which was devised and tested to ensure good performances of the proposed component. Finally, a prototype has been realised in scale with additive manufacturing technology in order to verify the printability and to optimize the extruder path. This study leads us to believe that the combined use of prefabricated systems, construction automation, and innovative materials can decisively improve the construction industry’s sustainability in the future.

scholarly journals Construction industry and the Industry 4.0 concept: a review

Vestnik MGSU ◽  
2021 ◽  
pp. 885-911
Author(s):  
Alexander V. Ginzburg ◽  
Liubov A. Adamtsevich ◽  
Aleksey O. Adamtsevich
Keyword(s):  
3D Printing ◽  
Construction Industry ◽  
Industry 4.0 ◽  
Building Materials ◽  
Industrial Revolution ◽  
Information Modeling ◽  
Russian Science ◽  
Scientific Publications ◽  
Fourth Industrial Revolution ◽  
Russian Science Citation Index

Introduction. The concept of Industry 4.0, which is considered the fourth industrial revolution, includes collective concepts of technologies such as the Internet of Things, virtual and augmented reality, 3D printing, printed electronics, artificial intelligence, etc. It was introduced in Germany in 2011. The purpose of the article is to analyze the publication activity focused on Industry 4.0 technologies in the construction industry and the development of construction technologies. Materials and methods. To achieve the goal set in this study, a bibliometric and bibliographic review of international scientific publications was carried out. At the first stage, the co-authors decided to use scientific publications indexed in Scopus and RSCI, for which three key word sampling were made: Keywords for the first sampling: the fourth industrial revolution; Keywords for the second sampling: The Fourth Industrial Revolution and construction industry; Keywords for the third sampling: Industry 4.0 and construction. Given that a small number of publications in the RSCI database — the database of the Russian Science Citation Index (4) — meet the requirements, the co-authors decided to analyze the publications from the list made by the Scopus database. At the same time, sampling 3 was selected for the analysis, as the most complete and suitable for the purposes of the study. Further, the co-authors collected data on scientific publications covering the research topic, and conducted a bibliometric analysis to develop a cluster map of relationships between the key words and a bibliographic analysis to select the scientific publications to be reviewed. Results. In accordance with the pre-set restrictions, the co-authors analyzed the articles published from 2011 to 2020. In total, 591 publications were left in the sampling. The information about these articles was converted to RIS format for its further analysis and visualization of bibliometric parameters. At the same time, few articles focus on research or development of Industry 4.0 technologies (27); hence, most of the publications represent overviews. Conclusions. The analysis of publications made it possible to single out two key Industry 4.0 technologies applied in the construction industry: information modeling and 3D printing. At the same time, the development of technologies for additive construction (3D printing) is one of the most dynamically developing areas of research in the field of the cutting-edge construction science. First of all, it refers to 3D Concrete Printing, which also contributed to the inception and development of a number of related research areas in the field of building materials related to the control of rheological and technological properties of dispersed building mixtures, the control of the hardening kinetics of materials that have mineral binders, dispersed reinforcement and other methods of increasing the strength characteristics of composites that feature hydration hardening, tension in bending, etc.

scholarly journals 3D printing cement based ink, and it’s application within the construction industry

2017 ◽  
Vol 120 ◽  
pp. 02003 ◽  
Author(s):  
Zhu Jianchao ◽  
Tao Zhang ◽  
Mansour Faried ◽  
Chen Wengang
Keyword(s):  
3D Printing ◽  
Construction Industry

scholarly journals Application of BIM and 3D Laser Scanning for Quantity Management in Construction Projects

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Thu Anh Nguyen ◽  
Phong Thanh Nguyen ◽  
Sy Tien Do
Keyword(s):  
Construction Industry ◽  
Construction Projects ◽  
Laser Scanning ◽  
Essential Role ◽  
Industrial Revolution ◽  
Management Process ◽  
3D Laser Scanning ◽  
Economic Sectors ◽  
Construction Companies

The construction industry has played an essential role in the process of modernization and industrialization and it has also been a major factor in determining the development of the infrastructure for other economic sectors. Construction companies consider the measurement of work progress, which often wastes time and has a low resolution, to be one of the most challenging problems faced by project management. Therefore, this research aimed to propose practical solutions by applying recent technological achievements of the 4.0 industrial revolution to improve the efficiency of the quantity management process. By utilizing the advantages and features of a BIM model and 3D laser scanning, this paper proposes that adopting a BIM model and 3D laser scanning has the potential to improve the accuracy and efficiency of the quantity management process. The case study demonstrated some typical tasks to evaluate accuracy and efficiency as well as to showcase the research proposal.

scholarly journals Challenges and Opportunities of E-Procurement in the Construction Industry

2021 ◽  
Vol 2 (4) ◽  
Author(s):  
Mansur Hamma-adama ◽  
◽  
Abdul-Basit Sa’eed Ahmad ◽  
Keyword(s):  
Construction Industry ◽  
Construction Projects ◽  
Industrial Revolution ◽  
Qualitative Content Analysis ◽  
Technological Advancement ◽  
Left Behind ◽  
Challenges And Opportunities ◽  
Lack Of Commitment ◽  
Cost Of Construction ◽  
Construction Works

Construction Industry is evolving amid the fourth industrial revolution. Transportation, commerce, manufacturing and many other industries ripened the current technological advancement and are striving to utilise every development in the IT sector. The procurement of construction works is known to be very conventional and backward in the adoption of digitalisation. The construction industry's procurement and supply chain are blamed for the most inflated cost of construction projects, mainly attributed to a lack of transparency and trust between the industry stakeholders. This research explores the challenges of E-procurement adoption in the industry and identifies the potential opportunities for its usage. This investigation's data are acquired through interviews, and the data are analysed using qualitative content analysis. This study reveals compounding challenges (i.e., corruption and lack of commitment) that lead to the failure of such efforts in Nigeria and the potential prospects (i.e., transparency and efficiency). This study is essential in developing a more effective and transparent process of procurement so that the Nigerian construction industry is not be left behind in the fast-digitalising markets.

scholarly journals Promising Applications of Additive-Manufactured (3D-printed) Electrochemical Sensors for Forensic Chemistry

2021 ◽  
Author(s):  
Sílvia Castro ◽  
Raquel Rocha ◽  
Afonso João ◽  
Eduardo Richter ◽  
Rodrigo Munoz
Keyword(s):  
3D Printing ◽  
Illicit Drugs ◽  
Industrial Revolution ◽  
Electrochemical Sensors ◽  
Forensic Chemistry ◽  
Recent Contribution ◽  
Printing Technology ◽  
3D Printing Technology ◽  
Wide Range ◽  
3D Printed

Additive-manufacturing is one of the major pillars of the new industrial revolution and the three-dimensional (3D) printing technology has been highlighted in this scenario. Among the many areas benefited by 3D-printing, the development of electrochemical sensors has appeared in evidence in the last years. One potential application of 3D-printed electrochemical sensors is devoted to forensic chemistry, which demands for portable analytical methods that can provide on-site measurements and thus bring a relevant information in loco. In this context, this review highlights the recent contribution of 3D-printing technology on the development of electrochemical sensors with great promises for on-site analysis in “real-world” forensic scenarios. From the detection of trace explosives, gunshot residues, illicit drugs and chemical threats, to the measurement of adulterants in food and fuels, we show the wide range of applications that 3D-printed electrochemical sensors have been proposed and future demands that can be addressed by such a powerful, affordable, and accessible tool.

scholarly journals The healthcare technology needs you

2021 ◽  
Vol 1 (1) ◽  
Author(s):  
Sumarno Adi Subrata ◽  
Jonathan Bayuo ◽  
Busra Sahin
Keyword(s):  
Artificial Intelligence ◽  
3D Printing ◽  
Standard Treatment ◽  
Healthcare Services ◽  
Fundamental Aspect ◽  
Innovative Technology ◽  
Community Settings ◽  
Healthcare Technology ◽  
Health Related ◽  
Digital Healthcare

The growing evidence and technology in healthcare lead to an improvement in the patient's health across a continuum of services in clinical and community settings. A multidisciplinary team should work in tandem on this phenomenon. Therefore, innovative healthcare technology must be designed intensively to optimize productivity and provide new insight along with support the standard treatment for particular diseases. In the coming years, technology is needed to change the way of caring for the patient. This is a fundamental aspect because the recent technology has shaped up in front of our practice with advances in digital healthcare services, such as 3D printing, robotics, nanotechnology and even artificial intelligence (The Medical Futurist, 2021). To respond to this, updated studies should be developed and published focusing on innovative technology including in Medicine, Nursing, Pharmacy, and other health-related topics.

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