Experimental characterisation of hygrothermal properties of a 3D printed cementitious mortar

Pessoa, Sofia; Jesus, Manuel; Guimarães, Ana Sofia; Lucas, Sandra S.; Simões, N.

doi:10.1016/j.cscm.2023.e02355

Cited by 3 publications

(3 citation statements)

References 39 publications

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“…As pointed out in [55,56], cement 3D-printed elements have a hygrothermal performance comparable to traditional elements, suggesting that additional thermal insulation materials are required to obtain appropriate thermal performance through the building envelope (Figure 20b).…”

Section: Design By 3d-printing Of Construction Componentsmentioning

confidence: 94%

Flexible and Lightweight Solutions for Energy Improvement in Construction: A Literature Review

Spanodimitriou,

Ciampi,

Tufano

et al. 2023

Energies

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Innovative materials and systems for flexible and lightweight energy-efficient solutions in construction can help achieve the objective of more efficient buildings. This literature review categorizes these solutions into three categories: materials/systems topology, design flexibility from 3D-printing technologies, and innovative solutions for building envelope designs. The review shows a significant increase in interest in this research topic in recent years, with an average annual growth rate of about 73%, with most research focused on the design and thermal aspects, as well as the material typology and 3D-printing technologies. According to the review, flexible and lightweight systems can be applied to all building sectors, and retrofitting existing buildings may become the primary approach. However, there is no specific European regulation for these systems, and a more holistic design approach is needed, involving both designers/constructors and users, to plan for actual social, economic, and environmental impacts.

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Section: Design By 3d-printing Of Construction Componentsmentioning

confidence: 94%

Flexible and Lightweight Solutions for Energy Improvement in Construction: A Literature Review

Spanodimitriou,

Ciampi,

Tufano

et al. 2023

Energies

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“…The application of polyurethane foam in the cavities between the inner and outer structural layers of the printed elements was tested for its thermal insulation. However, the internal stresses that occurred after the placement of the insulation caused cracks in the structural layers of the walls [4]. Therefore, in addition to the need to find specific automated solutions for the thermal insulation of these elements, the expansion of the insulation material must also be considered and analyzed.…”

Section: Introductionmentioning

confidence: 99%

“…However, there is limited research into the application of thermal insulation in printed buildings, with current limitations being related to thermal bridges associated with insulation discontinuities, lack of insulation in the fit between printed panels and poor adhesion between different layers of materials [4]. Dry or loose insulation materials, such as expanded clay or blown mineral wool, could be placed in hollow walls to improve their thermal performance.…”

Section: Introductionmentioning

confidence: 99%

Preliminary study of the application of thermal mortar in 3D printed concrete walls

Pessoa,

Jesus,

Rangel

et al. 2023

J. Phys.: Conf. Ser.

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3D printing (3DP), as an emerging technology in the construction industry, has the potential to solve the sector’s labour shortages and low efficiency, as well as helping to reduce its negative environmental impact. On the investigative path towards new construction solutions, the thermal performance of buildings must not be compromised. In additively manufactured buildings to date, walls have been printed with cavities that are subsequently manually filled or projected with conventional thermal insulation materials, such as polyurethane and vermiculite. To bridge the gap between conventional building construction and 3DP, it is important to present feasible and effective thermal solutions that can be applied using an automatic mode. This paper explores the viability of applying a commercial thermal mortar as an insulation in 3D printed concrete walls. Therefore, a preliminary experimental campaign was carried out to assess the behaviour of the thermal mortar during and after its application. It was found that concrete walls constrain the drying process of the thermal mortar, generating stresses that lead to the occurrence of cracks. To avoid their formation, some strategies were tested, namely by adding superplasticizer to the mixture, opening joints, drilling holes or opting for an incomplete filling of the cavities.

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3D-printed clay components with high surface area for passive indoor moisture buffering

Gentile,

Vargas Velasquez,

Fantucci

et al. 2024

Journal of Building Engineering

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Experimental characterisation of hygrothermal properties of a 3D printed cementitious mortar

Cited by 3 publications

References 39 publications

Flexible and Lightweight Solutions for Energy Improvement in Construction: A Literature Review

Flexible and Lightweight Solutions for Energy Improvement in Construction: A Literature Review

Preliminary study of the application of thermal mortar in 3D printed concrete walls

3D-printed clay components with high surface area for passive indoor moisture buffering

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