Digital Fabrication with Cement-Based Materials: Process Classification and Case Studies

Author(s):  
R. A. Buswell ◽  
F. P. Bos ◽  
Wilson Ricardo Leal da Silva ◽  
N. Hack ◽  
Harald Kloft ◽  
...  
Buildings ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 64 ◽  
Author(s):  
Hanaa Dahy

Choosing building materials is usually the stage that follows design in the architectural design process, and is rarely used as a main input and driver for the design of the whole building’s geometries or structures. As an approach to have control over the environmental impact of the applied building materials and their after-use scenarios, an approach has been initiated by the author through a series of research studies, architectural built prototypes, and green material developments. This paper illustrates how sustainable building materials can be a main input in the design process, and how digital fabrication technologies can enable variable controlling strategies over the green materials’ properties, enabling adjustable innovative building spaces with new architectural typologies, aesthetic values, and controlled martial life cycles. Through this, a new type of design philosophy by means of applying sustainable building materials with closed life cycles is created. In this paper, three case studies of research pavilions are illustrated. The pavilions were prefabricated and constructed from newly developed sustainable building materials. The applied materials varied between structural and non-structural building materials, where each had a controlled end-of-life scenario. The application of the bio-based building materials was set as an initial design phase, and the architects here participated within two disciplines: once as designers, and additionally as green building material developers. In all three case studies, Design for Deconstruction (DfD) strategies were applied in different manners, encouraging architects to further follow such suggested approaches.


2021 ◽  
pp. 330-339
Author(s):  
Felix Amtsberg ◽  
Caitlin Mueller ◽  
Felix Raspall

AbstractThe research presented in this paper focusses on the concept of “Di-terial” which aims to merge digital design and fabrication technology with natural materials such as bamboo poles and raw timber. It proposes a digital workflow that uses sensing techniques to gain individual material information of natural, unprocessed construction resources and identify their individual strengths and characteristics and therefore its potential in load-carrying structures. This information is then used to develop bespoke designs and fabrication concepts, bridging the gap between unprocessed material and automated fabrication setups. Two case studies, developed to prove this concept, are described and compared. Both cases focused on the development of spatial structures using node-bar combinations of local resources.


2019 ◽  
Vol 3 ◽  
pp. 91-97 ◽  
Author(s):  
Arnaud Perrot ◽  
Damien Rangeard ◽  
Venkatesh Naidu Nerella ◽  
Viktor Mechtcherine

Extrusion is a process that consists in forcing a formable material to pass through a die having the cross-section of the part to be obtained. This way of processing is used with conventional and fibre-reinforced cement-based materials to fabricate various construction elements such as panels, pipes and roadside curbs. Recently, with the development of digital fabrication methods and especially 3D concrete printing by selective deposition, the extrusion techniques have experienced a significant increase in interest. This letter describes the screw and ram extrusion techniques and their applications in construction industry. Furthermore, the underlying mechanisms involved during extrusion flow are delineated and the roles of rheological and hydro-mechanical behaviours (the latter one in a soil mechanics sense) in defining the extrudability – ability of being extruded – of the cementitious materials are highlighted. Finally, specific points such as flow-induced anisotropy of fibre reinforced cementitious materials or surface defects are addressed.


2020 ◽  
Vol 134 ◽  
pp. 106068 ◽  
Author(s):  
R.A. Buswell ◽  
W.R. Leal da Silva ◽  
F.P. Bos ◽  
H.R. Schipper ◽  
D. Lowke ◽  
...  

2019 ◽  
Vol 11 (13) ◽  
pp. 3562 ◽  
Author(s):  
Lucia Corsini ◽  
James Moultrie

The demand for humanitarian and development aid has risen to an unprecedented level in recent years. With a pressing need for new solutions, designers have started using digital fabrication (3D printing, CNC milling and laser cutting) to produce life-saving items. However, many organisations are failing to create the impacts they desire, and the social aspect of sustainability has been largely overlooked. This paper addresses this gap in knowledge by investigating guidelines for Design for Social Sustainability, specifically looking at digital fabrication for humanitarian and development projects. Building on existing literature and conducting three in-depth case studies of healthcare related products, the research develops a framework for Design for Social Sustainability. It provides useful guidelines to help plan and evaluate digital fabrication projects in the humanitarian and development sector. The findings show how design can trigger social sustainability at product, process and paradigm levels. Specifically, the case studies reveal the potential for digital fabrication to lead to more systems-focused, radical social sustainability. The paper concludes that an iterative and holistic approach to Design for Sustainability is needed, that begins by examining the social dimension first.


Sensors ◽  
2019 ◽  
Vol 19 (3) ◽  
pp. 738 ◽  
Author(s):  
Hanaa Dahy

Due to the high amounts of waste generated from the building industry field, it has become essential to search for renewable building materials to be applied in wider and more innovative methods in architecture. One of the materials with the highest potential in this area is natural fibre-reinforced polymers (NFRP), which are also called biocomposites, and are filled or reinforced with annually renewable lignocellulosic fibres. This would permit variable closed material cycles’ scenarios and should decrease the amounts of waste generated in the building industry. Throughout this paper, this discussion will be illustrated through a number of developments and 1:1 mockups fabricated from newly developed lignocellulosic-based biocomposites from both bio-based and non-bio-based thermoplastic and thermoset polymers. Recyclability, closed materials cycles, and design variations with diverse digital fabrication technologies will be discussed in each case. The mock-ups’ concepts, materials’ compositions, and fabrication methods are illustrated. In the first case study, a structural segmented shell construction is developed and constructed. In the second case study, acoustic panels were developed. The final case studies are two types of furniture, where each is developed from a different lignocellulosic-based biocomposite. All of the presented case studies show diverse architectural design possibilities, structural abilities, and physical building characteristics.


Author(s):  
Viktor Mechtcherine ◽  
S. Fataei ◽  
F. P. Bos ◽  
R. A. Buswell ◽  
Wilson Ricardo Leal da Silva ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document