An approach to develop printable strain hardening cementitious composites

Figueiredo, Stefan Chaves; Rodriguez, Cláudia Romero; Ahmed, Zeeshan Y.; Bos, Derk H.; Xu, Yading; Salet, Theo A.M.; Çopuroğlu, Oğuzhan; Schlangen, Erik; Bos, Freek

doi:10.1016/j.matdes.2019.107651

Cited by 128 publications

(84 citation statements)

References 50 publications

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“…A reference cement paste with a water-to-cement (w/c) ratio of 0.3 (REF) and three levels of VMA, 0.1, 0.3 and 1% of the cement mass, named 1M, 3M and 10M respectively were evaluated. The VMA content employed in this study follows the same levels found in [12] where the rheology of crowded solid suspensions using this type of admixture was studied, aiming the development of printable SHCCs.…”

Section: Experimental Methodsmentioning

confidence: 99%

“…Using the same approach employed in [12] one can estimate that from all studied pastes, only 1M, 3M and 10M would be able to be printed. An extra conclusion could be drafted from the rheological experiments.…”

Section: Rheology Propertiesmentioning

confidence: 99%

“…Usually the reinforcement level is around 2% of the total composite's volume, which brings challenges regarding the flowability of such mix designs. An alternative often approached to enhance the fibre dispersion is the employment of viscosity modifier admixtures (VMA) [11,12]. These admixtures are usually composed of long organic chains with -OH ramifications, that arrest the free water in the mixture through hydrogen intermolecular bridge.…”

Section: Introductionmentioning

confidence: 99%

“…One of the most used VMA is composed of hydroxypropyl methylcellulose (HPMC) [13]. In addition, the use of VMA is a key factor when developing printable cementitious composites [12]. The adjusting of the amount of the chemical admixture, coupled with a good distribution of particles grain size in the matrix, and optimum water-to-solid ratio may lead towards a material with the needed viscosity for printing.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Effect of viscosity modifier admixture on Portland cement paste hydration and microstructure

Figueiredo

Çopuroğlu

Schlangen

2019

Construction and Building Materials

Self Cite

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Section: Experimental Methodsmentioning

confidence: 99%

Section: Rheology Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of viscosity modifier admixture on Portland cement paste hydration and microstructure

Figueiredo

Çopuroğlu

Schlangen

2019

Construction and Building Materials

Self Cite

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“…In the past 20 years, the development of niche research on 3D printing in construction and automation flourished. In the international, here are a non-exhaustive name such as Contour Crafting, 3D-P (MIT) in United State, Winsun in China, D-Shape from Italy, CyBe Construction from the Netherlands, COBOD International from Danemark, Vertico from the Netherlands, Apis COR from Russia and XtreeE from France [17][18][19]. These niches have flourished but there are still major issues in the regulation of the material used in 3D printing for construction.…”

Section: Introductionmentioning

confidence: 99%

Experimental Approach for Printability Assessment: Toward a Practical Decision-Making Framework of Printability for Cementitious Materials

et al. 2019

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The objective of this paper is to propose a pre-experimental framework of printability pre-assessment of cementitious materials. This study firstly presents a general review of additive manufacturing in construction and then examines the main characteristic of the material formulation and printability properties based on extrusion technique. This framework comes with experimental tests to determine a qualitative printability index of mixtures. It uses mix-designs reported in the literature to define interval ratio of mixture design to be investigated in this study. The focus was put on two criteria that influence the formulation namely flowability and buildability. Two practiced based tests, mini slump and cone penetrometer, were used to draw the flowability and buildability dimensionless index. The results were analyzed by introducing an optimal printability coefficient and examining their time evolution. An optimal time of printing was determined Toptimal. Finally, a 3D mortar printing system and its operational process are presented. Then, based on the measurement, the optimal mixture is identified and printed in a large-scale geometry.

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Additive Fertigung mit Beton – Leitfaden für die Planung und die Durchführung von Projekten

Mechtcherine,

Kuhn,

Mai

et al. 2024

Beton und Stahlbetonbau

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Dieser Leitfaden, erstellt von der Arbeitsgruppe „Digitaler Betonbau durch additive Fertigung“ des Deutschen Ausschusses für Stahlbetonbau (DAfStb), dient als umfassende Ressource zur Unterstützung von Planung und Durchführung additiver Fertigungsprojekte im Betonbau in Deutschland. Er richtet sich an Architekten, Planer, Antragsteller, Materialhersteller, Bauunternehmen und weitere am Bau Beteiligte. Nach einer kurzen Vorstellung der Klassifizierung, Terminologie und Methoden der additiven Fertigung werden rechtliche Aspekte und Genehmigungsverfahren beleuchtet, um eine nahtlose Integration dieser Technologie in die Baupraxis zu gewährleisten. Der Leitfaden behandelt die Einordnung additiver Fertigungsmethoden mit Beton in das Bauordnungsrecht, erläutert den Ablauf von Genehmigungsverfahren und bietet Orientierungshilfen zur Abstimmung von Zuständigkeiten bei Projekten. Er geht auf technische Regeln für die Bemessung und Konstruktion von Tragwerken ein, insbesondere bei additiv hergestellten Wänden, und behandelt konstruktive Aspekte der Bewehrung. Ein wichtiger Bestandteil sind Beton‐ und Bauteilprüfungen, einschließlich der Methoden zur Probenherstellung sowie Prüfverfahren für Frisch‐ und Festbeton, was den Leitfaden zu einem hilfreichen Werkzeug für Fachleute im Bereich des digitalen Betonbaus macht.

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An approach to develop printable strain hardening cementitious composites

Cited by 128 publications

References 50 publications

Effect of viscosity modifier admixture on Portland cement paste hydration and microstructure

Effect of viscosity modifier admixture on Portland cement paste hydration and microstructure

Experimental Approach for Printability Assessment: Toward a Practical Decision-Making Framework of Printability for Cementitious Materials

Additive Fertigung mit Beton – Leitfaden für die Planung und die Durchführung von Projekten

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