Towards development of sustainable lightweight 3D printed wall building envelopes – Experimental and numerical studies

Cuevas, Karla; Strzałkowski, Jarosław; Kim, Jisu; Ehm, Clemens; Glotz, Theresa; Chougan, Mehdi; Ghaffar, Seyed Hamidreza; Stephan, Dietmar; Sikora, Paweł

doi:10.1016/j.cscm.2023.e01945

Cited by 7 publications

(15 citation statements)

References 29 publications

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“…Similarly, Nemova et al [ 30 ] conducted theoretical and experimental investigations to assess the thermal efficiency of 3D-printed concrete (3DPC) envelopes featuring different configurations, material arrangements, and insulation types. Suntharalingam et al [ 31 ] and Cuevas et al [ 32 ] studied different topological wall variants to identify the most energy-efficient configurations. In particular, they analyzed 32 configurations with and without different insulating materials.…”

Section: Related Workmentioning

confidence: 99%

“…In particular, they analyzed 32 configurations with and without different insulating materials. Cuevas et al [ 32 ] investigated 7 configurations using two different cement mixtures. He et al [ 33 ] designed a prototype building envelope, the 3D-VtGW, consisting of 3D-printed modular elements serving as the backbone for a green wall system to improve the energy efficiency of the building.…”

Section: Related Workmentioning

confidence: 99%

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3D printing for energy optimization of building envelope – Experimental results

de Rubeis,

Ciccozzi,

Paoletti

et al. 2024

Heliyon

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Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

3D printing for energy optimization of building envelope – Experimental results

de Rubeis,

Ciccozzi,

Paoletti

et al. 2024

Heliyon

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“…Several studies have analyzed the properties of 3D-printed walls from different points of view: fire resistance [4], mechanical resistance [5,6], and thermal performance [7][8][9]. For example, the numerical analysis in [7,8] analyzed how 3D-printed wall configuration affects the thermal transmittance U, and it was stated that thermal performance improvement can be achieved by filling the cavities of the walls.…”

Section: Introductionmentioning

confidence: 99%

“…For example, the numerical analysis in [7,8] analyzed how 3D-printed wall configuration affects the thermal transmittance U, and it was stated that thermal performance improvement can be achieved by filling the cavities of the walls. In [9], the mechanical and thermal performance of seven 30 cm-wide walls was investigated as a function of the concrete design. Other investigations compared the effect of introducing parallel cavities and of increasing cavities size: it was shown that the first option is more effective.…”

Section: Introductionmentioning

confidence: 99%

Improving the energy performance of a 3D-printed wall using recycled material

Neri,

Licciardello,

Reggia

et al. 2024

J. Phys.: Conf. Ser.

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In this paper, we present the results of a preliminary experimental campaign conducted on a 3D-printed wall 40 cm thick made of three concrete walls, connected by metal pins and concrete curbs to form three types of cavity - one rectangular and two triangular. The tests were performed in a climatic chamber at the Pietro Pisa Laboratory of the University of Brescia. The wall thermal performance has been evaluated by examining four scenarios in which the cavities have been filled with insulating material made of cellulose-based recycled flakes characterized by a declared thermal conductivity of 0.038 W/mK. The wall thermal transmittance U is measured based on the temperatures and heat fluxes measured through the structure. Based on the degree of filling, the wall thermal transmittance ranges between 1.58 W/m2K for the wall without insulation, and 0.28 W/m2K for the configuration with all cavities completely filled.

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“…Its principle of operation consists in transforming a 3D solid saved in a digital file into a physical spatial structure [18,19]. Based on these features of the technology, it is possible to develop optimal geometries of vertical partitions of buildings, which, apart from lower demand for building material, will meet the requirements of both construction and thermal insulation layers [20,21]. Obtaining a thermal partition of the building with appropriate properties is necessary both for economic reasons, by reducing the costs of heating and cooling utility rooms, and for environmental reasons, in order to minimize energy losses.…”

Section: Introductionmentioning

confidence: 99%

Influence of the In-Fill Pattern of the 3D Printed Building Wall on Its Thermal Insulation

Dziura,

Maroszek,

Góra

et al. 2023

Materials

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The intensive development of 3D Concrete Printing (3DCP) technology causes constantly increased its share in the construction sector. However, in order to produce products with controlled properties, optimization of the technological process is still required. Automation of production based on additive manufacturing methods streamlines the process by comprehensively manufacturing building components that meet, among others, strength, visual, and insulation requirements. Moreover, the possibility of using computer simulations to assess the properties of the designed elements allows for a multitude of analyzed versions of the constructed partitions, which can be verified at the design stage. Thanks to such an opportunity, the process of designing building elements can be significantly improved. The article presents results related to the assessment of the level of thermal insulation of products that can be produced by additive technology, depending on the applied spatial geometry of the vertical partition and the amount and type of materials used. Eight original solutions of in-fill pattern were designed, for which both Finite Element Method (FEM) computer simulations of thermal conductivity and experimental measurements of thermal conductivity of samples were performed. On the basis of the obtained results, both the correctness of the simulation results for the various analyzed materials and their consistency with the practical results were found. Depending on the investigated geometry, for samples of the same dimensions and using the same material, the differences in the U-factor obtained by FEM analysis amounted to 61%. The best solution from the investigated spatial geometries of the vertical partitions has been indicated. The U parameter in the variant with the best thermal insulation was 0.183 W/m2K, which meets the requirements of Polish construction law. The issues discussed in this work can be the basis for the selection of the best solution possible for practical use during the production of building walls using the 3DCP method fulfilling the guidelines of applicable standards. Furthermore, they can be used as a tool for optimizing geometry in terms of energy savings and reducing waste production by both engineers developing 3DCP technologies and architects using innovative techniques for manufacturing building structures.

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Towards development of sustainable lightweight 3D printed wall building envelopes – Experimental and numerical studies

Cited by 7 publications

References 29 publications

3D printing for energy optimization of building envelope – Experimental results

3D printing for energy optimization of building envelope – Experimental results

Improving the energy performance of a 3D-printed wall using recycled material

Influence of the In-Fill Pattern of the 3D Printed Building Wall on Its Thermal Insulation

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