Building rethought – 3D concrete printing in building practice

Weger, Daniel; Gehlen, Christoph; Korte, Waldemar; Meyer-Brötz, Fabian; Scheydt, Jennifer C.; Stengel, Thorsten

doi:10.1007/s41693-022-00064-5

Cited by 17 publications

(13 citation statements)

References 31 publications

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“…Varias experiencias alrededor del mundo están mostrando incipientes capacidades al respecto, en particular con construcción impresa-3D, aunque esta tecnología todavía requiere refuerzos estructurales y desarrollar procesos de diseño adaptados a condiciones locales Guaman et al, 2022). Además, se cambia el trabajo arquitectónico orientado a soluciones únicas para desarrollar procedimientos basados en secuencias de tareas y parámetros variables para planificar viviendas diversas y adecuadas (Weger et al, 2021). Este artículo presenta una experiencia en desarrollo de programación de diseño y construcción robótica para edificios residenciales en América Latina, con el fin de explorar nuevas vías para la demanda habitacional.…”

Section: Introductionunclassified

SIGraDi 2022. Critical Appropriations

Z.¹

2023

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SIGraDi 2022. Critical Appropriations es la XXVI Conferencia Internacional de la Sociedad Iberoamericana de Gráfica Digital, organizada por la Facultad de Arquitectura de la Universidad Peruana de Ciencias Aplicadas (UPC) y SIGraDi. Este volumen contiene los artículos seleccionados por el comité científico de SIGraDi, los cuales fueron presentados en línea entre el 9 y 11 de noviembre de 2022, además, a partir de estos trabajos se desarrollaron10 talleres y un taller para doctorandos. SIGraDi 2022. Apropiaciones Críticas se organizó en 7 tópicos y 30 subtópicos, como culturas de la programación, robótica y fabricación digital, BIM, diseño bio inspirado, educación digital. Una publicación de difusión e intercambio de ideas sobre Arquitectura, Diseño, Arte y disciplinas asociadas.

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Section: Introductionunclassified

SIGraDi 2022. Critical Appropriations

Z.¹

2023

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“…As the three industry areas already indicate, the applied material variation is diverse. In research and industry materials like steel, polymers, sand and concrete are commonly used [2][3][4]. Among the advantages of additive manufacturing, less material consumption and manufacturing time savings are to be mentioned in comparison to subtractive manufacturing methods.…”

Section: Introductionmentioning

confidence: 99%

3D‐printing with steel on thin sheets for application in free form façade construction: welding process development and material properties

Grebner,

Lange

2023

ce papers

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Wire and Arc Additive Manufacturing (WAAM) became a significant research field in structural engineering over the past years. It offers the opportunity to apply material fast and precisely, following the load path, inducing effective material consumption. Considering free‐formed sheet‐metal façades, to date large thicknesses are necessary to maintain the final shape and load‐bearing capacity that however causes high material consumption and costs during the construction processes. Hence, WAAM could be an opportunity to reduce the amount of mild steel used for free‐form façades. As part of a research project at TU Darmstadt, 1 mm thick free‐form sheet‐metal façades elements have been manufactured using WAAM. Due to precisely welded lattice structures, placed on the backside of the metal sheet, the reinforcement will be ensured. Wide studies on welding parameters focused on a stable process without damaging the later frontside of the façade panel and on process optimization. In addition, material properties of the welding material have been determined to check its usability in façade construction.

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“…Drawing on the pre-investigation of the NNM process type [3], this study explores a further developed NNM process type, which presents a novel approach to mixing mortar in the field of E3DCP. In general, the NNM process type distinguishes itself from the standard extrusion process type [1,[4][5][6][7] by offering two primary advantages: Firstly, it eliminates the need for the typically required mortar pumping, leading to reduced demand for workability in processed materials, which in turn simplifies the overall printing process. Secondly, the NNM method introduces multifunctionality in printed objects, enabling tailored material properties in specific locations.…”

Section: Introductionmentioning

confidence: 99%

“…Additive manufacturing, commonly referred to as 3D printing, has been rapidly gaining attraction in the construction industry due to its potential for reduced material waste, increased design flexibility, and enhanced construction efficiency. Among various methods, the extrusion-based 3D concrete printing technique (E3DCP) has proven to be a promising solution for large-scale construction applications, particularly in the domain of concrete and mortar printing [1,2]. This paper focuses on the investigation of the Near-nozzle Mixing (NNM) technique for additive manufacturing of cementitious mortar.…”

Section: Introductionmentioning

confidence: 99%

Near‐Nozzle Mixing for Additive Manufacturing of Cementitious Mortar: A Homogeneity Study

Hechtl,

Kränkel,

Gehlen

2023

ce papers

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This paper investigates the Near‐nozzle Mixing (NNM) technique for 3D printing cementitious mortar, focusing on achieving continuous and homogeneous material properties. The NNM's ability to print Natural Sand Mortar (NSM), Recycled Aggregate Mortar (RAM), and Lightweight Mortar (LWM) was assessed. Fresh and hardened properties of each mortar were examined, emphasizing standard deviation (STD) and coefficient of variation (CV) to measure material homogeneity. Fresh properties included slump flow, yield stress, air void volume, density, and water‐to‐cement ratio, while hardened properties covered compressive strength, flexural strength, hardened density, and thermal conductivity. Results showed low CV values for all mortar types, indicating high consistency and homogeneity. NNM showed is capability to print of various materials with customized properties. NSM showed the highest compressive strength, RAM balanced strength and sustainability, and LWM provided the best thermal insulation. The study highlights NNM's versatility and potential for construction applications requiring tailored properties, proving it a promising additive manufacturing solution. The research serves as a foundation for future studies on graded multi‐material printing.

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Building rethought – 3D concrete printing in building practice

Cited by 17 publications

References 31 publications

SIGraDi 2022. Critical Appropriations

SIGraDi 2022. Critical Appropriations

3D‐printing with steel on thin sheets for application in free form façade construction: welding process development and material properties

Near‐Nozzle Mixing for Additive Manufacturing of Cementitious Mortar: A Homogeneity Study

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