3D-printed multi-functional foamed concrete building components: Material properties, component design, and 3D printing application

IF 6.2 2区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Developments in the Built Environment Pub Date : 2024-06-14 DOI:10.1016/j.dibe.2024.100483
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Abstract

The use of multi-density foamed concretes (FCs) to produce multi-functional building components by 3D Concrete Printing (3DCP) is investigated. The use of medium-density 3D-printed foamed concrete (3DPFC_800), primarily serving a load-bearing role, and ultra-lightweight foamed concrete (ULFC_300), as thermal insulation material poured in the voids defined by the former, is proposed. This enables meeting diverse performance requirements within a single cementitious matrix, eliminating the need for multiple materials. The main properties of the proposed mixes are investigated. The compressive strength and thermal conductivity are equal to 7.04 MPa and 0.205 W/mK, and 1.43 MPa and 0.072 W/mK for 3DPFC_800 and ULFC_300, respectively. A successful 2D-printing test validates the suitability of 3DPFC_800 for 3DCP, and a robotic arm is employed for 3DCP tests. The proposed application allows for further knowledge on the use of FC in 3DCP and the identification of some issues and challenges that still need to be addressed.
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三维打印多功能发泡混凝土建筑构件:材料特性、构件设计和三维打印应用
本研究探讨了利用多密度发泡混凝土(FC)通过三维混凝土打印(3DCP)技术生产多功能建筑构件的问题。建议使用中密度 3D 打印发泡混凝土(3DPFC_800)和超轻发泡混凝土(ULFC_300),前者主要起承重作用,后者则作为保温材料浇筑在前者定义的空隙中。这样就能在单一水泥基质中满足不同的性能要求,无需使用多种材料。对所建议的混合料的主要性能进行了研究。3DPFC_800 和 ULFC_300 的抗压强度和导热系数分别为 7.04 MPa 和 0.205 W/mK,以及 1.43 MPa 和 0.072 W/mK。成功的 2D 印刷测试验证了 3DPFC_800 适用于 3DCP,并使用机械臂进行 3DCP 测试。拟议的应用有助于进一步了解 FC 在 3DCP 中的应用,并确定一些仍需解决的问题和挑战。
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来源期刊
CiteScore
7.40
自引率
1.20%
发文量
31
审稿时长
22 days
期刊介绍: Developments in the Built Environment (DIBE) is a recently established peer-reviewed gold open access journal, ensuring that all accepted articles are permanently and freely accessible. Focused on civil engineering and the built environment, DIBE publishes original papers and short communications. Encompassing topics such as construction materials and building sustainability, the journal adopts a holistic approach with the aim of benefiting the community.
期刊最新文献
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