Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/111618
Title: | Experimental characterisation of hygrothermal properties of a 3D printed cementitious mortar | Authors: | Pessoa, Sofia Jesus, Manuel Guimarães, Ana S. Lucas, Sandra S. Simões, Nuno |
Keywords: | 3D printing; Hygrothermal characterisation; Thermal conductivity; Water vapour permeability; Capillary water absorption; Sorption isotherm; Cementitious mortar | Issue Date: | 2023 | Publisher: | Elsevier | Project: | FCT MIT-EXPL/TDI/0041/2019 doctoral grant PD/BD/150398/2019 UIDB/04708/2020 |
Serial title, monograph or event: | Case Studies in Construction Materials | Volume: | 19 | Abstract: | 3D printing (3DP) presents great potential for automation, sustainability, and quality control in the construction sector. However, research on 3DP in Construction has been carried out primarily from a structural standpoint, and information on the thermal performance, comfort and energy efficiency of these solutions remains very limited. Given the importance of assessing how printed walls perform when subjected to hygrothermal solicitations, this work experimentally analyses a cement-based mortar specially developed for 3DP. An extensive laboratory campaign was carried out, and the following set of physical, hygric and thermal properties was obtained: the dry bulk density, saturation moisture content, specific heat capacity, porosity, water absorption due to capillary action, water vapour permeability, thermal conductivity (dry and moisture-dependent), and the sorption isotherm. The results show that the 3D printed cement-based mortar, which presents a dry density of 2060 kg/m3 and a thermal conductivity of 1.33 W/(m K), has a hygrothermal performance comparable to that of traditional cast concrete. This indicates that additional thermal insulation materials are required for appropriate thermal performance through the building envelope. Moreover, this detailed hygrothermal characterisation is suitable for design purposes, allowing the use of the obtained properties in future numerical simulations, important for studying the hygrothermal performance of printed building elements in service. | URI: | https://hdl.handle.net/10316/111618 | ISSN: | 22145095 | DOI: | 10.1016/j.cscm.2023.e02355 | Rights: | openAccess |
Appears in Collections: | FCTUC Eng.Civil - Artigos em Revistas Internacionais |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Experimental characterisation of hygrothermal properties of a 3D printed cementitious mortar.pdf | 5 MB | Adobe PDF | View/Open |
Page view(s)
69
checked on Sep 25, 2024
Download(s)
49
checked on Sep 25, 2024
Google ScholarTM
Check
Altmetric
Altmetric
This item is licensed under a Creative Commons License