Energy efficient 3D printed buildings: Material and techniques selection worldwide study

Alkhalidi, Ammar; Hatuqay, Dina

doi:10.1016/j.jobe.2020.101286

Cited by 44 publications

(33 citation statements)

References 21 publications

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“…The thermal performance, thickness, and properties of the materials used in these wall components play a significant role in regulating the heat loss and gain of the building [2,23,30]. The introduction of air gaps and filling the cavity using insulation materials or insulation layers between the structural elements is an effectual technique to attain the required thermal comfort of a building [31]. In addition, by enhancing the thermal The ability to take precise measurements of the appropriate thermal performance is essential to understand and improve the thermal efficiency of this new 3DPC technology.…”

Section: Energy Efficiency Of 3d-printed Concrete Structuresmentioning

confidence: 99%

“…Pessoa et al [29] conducted a systematic literature review to identify the key innovations made so far in 3DPC technology and its applicability in the construction industry, with specific attention being given to the thermal efficiency. Alkhalidi and Hatuqay [31] investigated and developed energy-efficient and low-cost residential 3DPC elements that could be accomplished through a green and sustainable method. Similarly, He et al [32] introduced a 3DPC modular building system with an integrated vertical greenery system called the 3D-printed vertical green wall (3D-VtGW).…”

Section: Energy Efficiency Of 3d-printed Concrete Structuresmentioning

confidence: 99%

“…Complying with currently available geometries of 3DPC walls in the industry and the cavity arrangements proposed by Wang et al [24], this study numerically investigated the energy performance of the innovative 3DPC wall configurations. Suitable heat transfer numerical models with cavity wall configurations proposed by Alkhalidi and Hatuqay [31] were developed using Abaqus [34] finite element software. The models were then validated by comparing the U-value results presented by Alkhalidi and Hatuqay [31].…”

Section: Scope Of the Current Studymentioning

confidence: 99%

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Energy Performance of 3D-Printed Concrete Walls: A Numerical Study

et al. 2021

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Three-dimensional-printed concrete (3DPC), which is also termed as digital fabrication of concrete, offers potential development towards a sustainable built environment. This novel technique clearly reveals its development towards construction application with various global achievements, including structures such as bridges, houses, office buildings, and emergency shelters. However, despite the enormous efforts of academia and industry in the recent past, the application of the 3DPC method is still challenging, as existing knowledge about its performance is limited. The construction industry and building sectors have a significant share of the total energy consumed globally, and building thermal efficiency has become one of the main driving forces within the industry. Hence, it is important to study the thermal energy performance of the structures developed using the innovative 3DPC technique. Thermal characterization of walls is fundamental for the assessment of the energy performance, and thermal insulation plays an important role in performance enhancements. Therefore, in this study, different wall configurations were examined, and the conclusions were drawn based on their relative energy performance. The thermal performance of 32 different 3DPC wall configurations with and without cavity insulation were traced using validated finite element models by measuring the thermal transmittance value (U-value). Our study found that the considered 3DPC cavity walls had a low energy performance, as the U-values did not satisfy the standard regulations. Thus, their performance was improved with cavity insulation. The simulation resulted in a minimum thermal transmittance value of 0.34 W/m2·K. Additionally, a suitable equation was proposed to find the U-values of 100 mm-thick cavity wall panels with different configurations. Furthermore, this study highlights the importance of analytical and experimental solutions as an outline for further research

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Section: Energy Efficiency Of 3d-printed Concrete Structuresmentioning

confidence: 99%

Section: Energy Efficiency Of 3d-printed Concrete Structuresmentioning

confidence: 99%

Section: Scope Of the Current Studymentioning

confidence: 99%

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Energy Performance of 3D-Printed Concrete Walls: A Numerical Study

et al. 2021

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“…The architectural industry uses virtually all printing techniques, both FDM ® and SLS or DLP and SLA. AM provides structural flexibility and the possibility to use almost any kind of material, so today it is even possible to print energy‐efficient and inexpensive houses 78 …”

Section: D Printing Rulesmentioning

confidence: 99%

State of the art in additive manufacturing and its possible chemical and particle hazards—review

et al. 2021

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Additive manufacturing, enabling rapid prototyping and so‐called on‐demand production, has become a common method of creating parts or whole devices. On a 3D printer, real objects are produced layer by layer, thus creating extraordinary possibilities as to the number of applications for this type of devices. The opportunities offered by this technique seem to be pushing new boundaries when it comes to both the use of 3D printing in practice and new materials from which the 3D objects can be printed. However, the question arises whether, at the same time, this solution is safe enough to be used without limitations, wherever and by everyone. According to the scientific reports, three‐dimensional printing can pose a threat to the user, not only in terms of physical or mechanical hazards, but also through the potential emissions of chemical substances and fine particles. Thus, the presented publication collects information on the additive manufacturing, different techniques, and ways of printing with application of diverse raw materials. It presents an overview of the last 5 years’ publications focusing on 3D printing, especially regarding the potential chemical and particle emission resulting from the use of such printers in both the working environment and private spaces.

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“…To compare the fire performance of varying 3D printed concrete walls, the finite element analysis was carried by Suntharalingam et al [43] and the results showed that 3D printed non-load bearing cavity walls had superior fire resistance. To create an energy-saving and comfortable environment, a guideline was presented by Alkhalidi et al [44] by investigating the thermal comfort of 3D printed structures.…”

Section: Structural-functional Formmentioning

confidence: 99%

3D printed concrete components and structures: an overview

Xiao,

Liu,

Ding

et al. 2021

Sustain. Struct.

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This paper aims to present an overview and explore components or structures suitable for 3D printed concrete. Most traditional structural forms are not well suitable for 3D printed concrete. To be more specific, it cannot fully consider the characteristics and advantages of 3D printing such as individualization and digitalization. Several 3D-printing-specific structure forms (including hollow form, tree form, arch form, and structure-functional form) are classified and the relevant successful cases are demonstrated. Moreover, the application potential of 3D printed concrete structures is illustrated and the limitations as well as the solutions for the application of 3D printed concrete in practical projects are also summarized. Based on the classification of different reinforcement materials, several reinforcement methods are intensively discussed for 3D printed concrete including steel bars, fibers and other reinforcement materials. The comparison of economic and environmental benefits between 3D concrete printing technology and traditional construction method is discussed respectively. Finally, the expected evolution of 3D printed structures is put forward and recommended.

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Energy efficient 3D printed buildings: Material and techniques selection worldwide study

Cited by 44 publications

References 21 publications

Energy Performance of 3D-Printed Concrete Walls: A Numerical Study

Energy Performance of 3D-Printed Concrete Walls: A Numerical Study

State of the art in additive manufacturing and its possible chemical and particle hazards—review

3D printed concrete components and structures: an overview

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