scholarly journals Specification of the Properties and Effects of Additives and Admixtures on a Mixture Suitable for 3D Printing of Buildings

2020 ◽  
Vol 28 (4) ◽  
pp. 38-44
Author(s):  
Diana Fiľarská ◽  
Stanislav Unčík ◽  
Terézia Cabanová
Keyword(s):  
3D Printing ◽  
Cement Mortar ◽  
Fresh Mixture ◽  
The World ◽  
Optimal Mix

AbstractThis article focuses on 3D printing of buildings using cement mortar-based material. Specific requirements are necessary for such a material; it therefore must have different properties compared to conventional cement mortar. These properties of a fresh mixture and the possibilities for their testing are described in more detail in the first part of the article. Specifically, these are pumpability, printability, buildability, and workability. In order to achieve these properties, it is necessary to add various additives and admixtures to the mixtures, in addition to the basic components such as water, sand, and cement. Scientists around the world are working to create an optimal mix. The second part of this article presents an overview of the most commonly used ingredients and their effect on the properties of the mixture.

3D Technology – Additive Manufacturing Applications and Prospects (Vol. 24, No. 9, Full Issue)

2020 ◽  
Vol 24 (09) ◽  
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Environmental Impact ◽  
Real World ◽  
Vaccine Development ◽  
Health Screening ◽  
Wide Range ◽  
The World ◽  
Real World Applications ◽  
Manufacturing Applications

For the month of September 2020, APBN dives into the world of 3D printing and its wide range of real-world applications. Keeping our focus on the topic of the year, the COVID-19 pandemic, we explore the environmental impact of the global outbreak as well as gain insight to the top 5 vaccine platforms used in vaccine development. Discover more about technological advancements and how it is assisting innovation in geriatric health screening.

scholarly journals Alveolus Lung-on-a-Chip Platform: A Proposal

Chemosensors ◽  
2021 ◽  
Vol 9 (9) ◽  
pp. 248
Author(s):  
Noelia Campillo ◽  
Vinicius Rosa Oliveira ◽  
Renata Kelly da Palma
Keyword(s):  
Human Physiology ◽  
3D Printing ◽  
Respiratory Diseases ◽  
Animal Experiments ◽  
Clinical Applications ◽  
Potential Candidate ◽  
New Approaches ◽  
The World ◽  
New Ideas ◽  
Causes Of Deaths

Respiratory diseases are top-ranked causes of deaths and disabilities around the world, making new approaches to the treatment necessary. In recent years, lung-on-a-chip platforms have emerged as a potential candidate to replace animal experiments because they can successfully simulate human physiology. In this review, we discuss the main respiratory diseases and their pathophysiology, how to model a lung microenvironment, and how to translate it to clinical applications. Furthermore, we propose a novel alveolus lung-on-a-chip platform, based on all currently available methodologies. This review provides solutions and new ideas to improve the alveolar lung-on-a-chip platform. Finally, we provided evidence that approaches such as 3D printing, organ-a-chip devices and organoids can be used in combination, and some challenges could be overcome.

scholarly journals Freeform 3D Printing: A Sustainable, Efficient Construction Alternative

2021 ◽  
Author(s):  
◽  
Armano Papageorge
Keyword(s):  
3D Printing ◽  
Digital Technology ◽  
Digital Design ◽  
Robotic Arm ◽  
Structural Optimisation ◽  
Simulation Tools ◽  
The World ◽  
Efficient Construction ◽  
Efficient Alternative ◽  
Computational Workflow

<p>Since the beginning of the 20th century, modernism introduced to the world an architectural composite that consists of concrete, steel and glass. Heading into the 21st century, the use of these three materials has only expanded as it continues to be the most economically efficient means of construction. While digital technology in design and construction continues to evolve, the materials at which we construct architecture has remained the same. Given the rapid growth of the human population, new and more sustainable approaches to construction methodologies and materials need to be explored and utilised. This research will demonstrate the potential of freeform 3D printing as a sustainable and efficient alternative building method. It outlines contemporary digital design techniques including computation and simulation tools as a means to define and test this proposed building method including structural optimisation tools to create the most structurally efficient form from additive manufacturing. The computational methods described are then applied to a manufacturing process that includes a 6-axis robotic arm. The final result is a building methodology that supports a computational workflow from design conception to manufacture.</p>

Experimental Study on the Anti-Cracking Property of Basalt Fiber for Cement-Based Materials

2011 ◽  
Vol 328-330 ◽  
pp. 1351-1354
Author(s):  
Jun Yong He ◽  
Xiao Qing Huang ◽  
Cheng Yu Tian
Keyword(s):  
Experimental Study ◽  
Experimental Research ◽  
21St Century ◽  
Cement Mortar ◽  
Polypropylene Fiber ◽  
Basalt Fiber ◽  
Polyacrylonitrile Fiber ◽  
Plastic Shrinkage ◽  
The World ◽  
Cement Based Materials

Basalt fiber has the advantages of non-pollution and omnipotence, and will be widely used in the 21st Century. Therefore, more and more attention is paid on experimental research on the basalt fiber in the world. First,according to the requirements of the fibers used in the cement-based materials, the contrast testing of the plastic shrinkage between fiber cement mortar and pure mortar was made. The experimental results showed that basalt fiber , polypropylene fiber and polyacrylonitrile fiber can be preliminarily chosen as reinforced fibers in cement-based materials. Finally, taking both characteristics of basalt fiber and the increase of cement-based materials costs into account, it can be drawn that top priority should be given to the basalt fiber rather than to other fibers for cement-based materials.

scholarly journals Multimaterial 3D Printing for the Fabrication of Functional Stethoscopes

2019 ◽  
Author(s):  
Rachel Popkin ◽  
Fluvio Lobo ◽  
Jack Stubbs
Keyword(s):  
3D Printing ◽  
Healthcare System ◽  
Medical Devices ◽  
Financial Burden ◽  
Cross Contamination ◽  
On Demand ◽  
The World ◽  
Single Use ◽  
The Cost ◽  
Developed World

Stethoscopes are ubiquitous across the healthcare system. For the most part, stethoscopes do not represent a financial burden, mostly throughout the developed world. Further reducing the cost of stethoscopes has both humanitarian and prophylactic goals. The Glia project pioneered the concept of 3D printing stethoscopes for war or poverty-stricken regions of the world. Cross-contamination concerns have led researchers and manufacturers to develop single-use stethoscopes. Our aim is to develop a fully printed, multi-material, functional stethoscope to alleviate these concerns. Our team also seeks to establish a framework for the on-demand manufacturing of medical devices to reduce costs associated with shipping, distribution, and inventory.

scholarly journals IBER CONCRETE FOR 3D-PRINTING

2019 ◽  
Vol 4 (3) ◽  
pp. 22-27 ◽  
Author(s):  
Елена Шорстова ◽  
Elena Shorstova ◽  
Сергей Клюев ◽  
Sergey Klyuev ◽  
Александр Клюев ◽  
...  
Keyword(s):  
3D Printing ◽  
Specific Surface ◽  
Construction Industry ◽  
Experimental Studies ◽  
Basalt Fiber ◽  
Fiber Reinforced Concrete ◽  
Concrete Mixture ◽  
Fine Aggregate ◽  
Reinforcing Agent ◽  
The World

The article deals with the possibility of using 3D-printing in the construction industry. The analysis of the work performed in this area in the world. It also presents the main advantages of this method of construction of structures and buildings in general. Experimental studies were carried out using the components of the mixture: CEM I 42.5H Sebryakovcement, fine ground quartzitic sandstone with a specific surface of 700 m2/ kg using gypsum. Sand was used as fine aggregate. To make the mixture plasticity, such additives as plasticizer PFM-NLK and Murapor Kombi 756 were used. Basalt fiber was used as a reinforcing agent. Were developed compositions of the concrete mixture dispersed reinforced with basalt fiber. The work was able to develop the composition of fiber-reinforced concrete mixture, which can be used for 3D- printing. Its strength characteristics were determined, allowing to conclude that this composition meets all the requirements for this technology.

Current achievements in 3D bioprinting technology of chitosan and its hybrids

2021 ◽  
Author(s):  
Shadpour Mallakpour ◽  
Fariba Sirous ◽  
Chaudhery Mustansar Hussain
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Three Dimensional ◽  
3D Bioprinting ◽  
Printing Technology ◽  
3D Printing Technology ◽  
The World

In recent years, additive manufacturing, or in other words three-dimensional (3D) printing technology has rapidly become one of the hot topics in the world. Among the vast majority of materials,...

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