Ice Formwork for High-Performance Concrete: A Model of Lean Production for Prefabricated Concrete Industry

Sitnikov, Vasily

doi:10.1016/j.istruc.2018.11.004

Cited by 28 publications

(20 citation statements)

References 11 publications

(11 reference statements)

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“…In the course of our research it has been found that this method can help to improve the precision of the concrete parts, while supporting more detailed and complex design geometry and reducing the risks in the production and the need of manual labour. The feasibility, functionality, and practical benefits of Ice Formwork have been advocated in previously published work, covering the topics of cement hydration at subfreezing temperatures, 11 subtractive digital processing of ice 10 and practical application of the method in a design case of a lightweight rain screen façade element. 12 Although the use of ice as the moulding material has gained very little attention, conceptually this material choice has significant rationales.…”

Section: Introduction Of the Ice-based Methods Of Concrete Prefabrication -Ice Formworkmentioning

confidence: 99%

“…In an attempt to counteract the disadvantages of conventional mould-making outlined above, the research in digital solutions of concrete prefabrication has been taking place for a couple of decades, leading to many alternative production methods, from fabric formwork to direct digital fabrication – an overview of the most promising technological concepts can be found in previously published article. 10 By far, the most discussed strategy in this list is concrete 3D-printing. On one hand, the technology aspires to provide a flexible fabrication method for various concrete classes including HPFRC.…”

Section: Introductionmentioning

confidence: 99%

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Preliminary assessment of environmental performance of ice formwork production method for irregular architectural elements of concrete

Sitnikov

Rogers

2021

International Journal of Space Structures

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The present article communicates knowledge in sustainability of a method of digital fabrication in precast concrete production. The method, known as Ice Formwork, serves in production of ultrathin lightweight architectural elements – a novel design typology that has emerged with the development of High-Performance Fibre-Reinforced Concrete (HPFRC), and helps to reduce cement consumption, adopt digital fabrication processes, and increase design flexibility. In practice, however, this production employs suboptimal methods of mould-making, using petrochemical or engineered wood products for single-use moulds, entailing excessive amounts of non-recyclable waste. The current work builds on the research and development of a novel production method Ice Formwork facilitated through single-use moulds made of artificially frozen water. Previously published work on the subject has covered topics such as cement hydration at subfreezing temperature, subtractive digital processing of ice and a case of practical application illustrated with the production of a prototype of a lightweight façade rain screen. Yet, since artificial refrigeration and processing of large amounts of water is essential for Ice Formwork production, the environmental performance of this method requires a thorough examination. Thus, the current piece of work attempts to address two major issues, namely: (1) Energy consumption of industrial refrigeration in production of Ice Formwork. (2) Changes in water mineral content after a cycle of Ice Formwork concrete production. For both topics, the research work required development of an original experimental methodology. This aspect has been given the great attention and required development of new technical solutions on many levels. Further research and development is needed to come to a comprehensive environmental assessment, and the results of the current study merely provide a preparatory overview that can help to orient and properly set the objectives for the following research stages.

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Section: Introduction Of the Ice-based Methods Of Concrete Prefabrication -Ice Formworkmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Preliminary assessment of environmental performance of ice formwork production method for irregular architectural elements of concrete

Sitnikov

Rogers

2021

International Journal of Space Structures

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“…Ein weiteres Problem ist die Entstehung von Abfällen bei der Bearbeitung, die durch die Erhöhung der Wiederholbarkeit der Betonelemente, die Reduzierung der verschiedenen Schalungstypen und die Wiederverwendung von Schalungen vermindert werden kann [8]. Ein alternativer Ansatz ist die Nutzung wiederverwendbarer Fräsmaterialien wie Wachs [9], Eis [10] oder Sand [11], Bild 2b).…”

Section: Introductionunclassified

Rezyklierbare Sandschalungen – Auf dem Weg zur Kreislaufproduktion leichter Betonbauteile

Kovaleva

Nistler

Blandini

et al. 2022

Beton und Stahlbetonbau

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In Zeiten des Klimawandels und zunehmender Ressourcenknappheit wird die Bauindustrie mit der wachsenden Dringlichkeit konfrontiert, Ressourcenverbrauch, Emissionen und Abfälle deutlich zu reduzieren. Die Anwendung von Leichtbaustrategien in Verbindung mit Kreislaufproduktionsprozessen bietet einen ganzheitlichen Ansatz für dieses Problem. In dem folgenden Beitrag wird eine Methode zur abfallfreien Produktion leichter Betonbauteile mittels wiederverwertbarer Sandschalungen präsentiert. Der Einsatz von wasserlöslichen Mischungen in einem Pulverbettdruckverfahren ermöglicht die Herstellung von Schalungen für komplexe und optimierte Betonstrukturen und die Wiederverwendung des Schalungsmaterials in nachfolgenden Produktionszyklen (Bild 1). Die einzelnen Schritte des Verfahrens werden detailliert vorgestellt und am Beispiel der Herstellung eines Betonprototyps mit komplexer räumlicher Struktur illustriert.

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“…The height of the bearing can be altered to change the silicon panels for the curvature of free-form panels. This allows the reuse and flexibility of the curvature, but it is only good for thin panels [25,34]. Transformative formwork is a mold for various free-form panels.…”

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confidence: 99%

An Analytical Study of the Latest Trends of Free-Form Molds

et al. 2022

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With the development of technology, the number of free-form structures—as well as their value—is increasing. In order to construct such free-form structures, a number of studies are being conducted on free-form molds from multifaceted perspectives. However, it is difficult to identify the progress of studies related to free-form molds, as the scope of the studies is redundant or similar in many cases. Therefore, the current study focused on the identification of the trends of preceding studies on free-form molds using the PRISMA technique. The study classified the studies into three topics in order to identify the trends: ‘free-form curve fabrication technology’, ‘free-form mold fabrication technology’, and the ‘analysis of free-form panel forms.’ Each topic was further categorized into two tiers for more in-depth analysis. The whole process was adopted in order to suggest the trends of studies on free-form molds. The findings are expected to be used to provide fundamental data for future studies on free-form molds, and to set the directions for new studies.

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Ice Formwork for High-Performance Concrete: A Model of Lean Production for Prefabricated Concrete Industry

Cited by 28 publications

References 11 publications

Preliminary assessment of environmental performance of ice formwork production method for irregular architectural elements of concrete

Preliminary assessment of environmental performance of ice formwork production method for irregular architectural elements of concrete

Rezyklierbare Sandschalungen – Auf dem Weg zur Kreislaufproduktion leichter Betonbauteile

An Analytical Study of the Latest Trends of Free-Form Molds

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