Interlayer Bond Strength Testing in 3D-Printed Mineral Materials for Construction Applications

Article Chemistry, Physical

Mechanical Properties of a 3D-Printed Wall Segment Made with an Earthen Mixture

Elena Ferretti et al.

Summary: This study focuses on the load-bearing capacity of 3D-printed earthen buildings for the first time. It explores the production and testing process of these structures and concludes that the compressive strength of 3D-printed earthen elements is comparable to that of rammed earth structures. The study also highlights the positive effect of the infill, which prevents crack propagation and improves the overall behavior of the elements.

MATERIALS (2022)

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Article Construction & Building Technology

Rheological properties and compressive strength of construction and demolition waste-based geopolymer mortars for 3D-Printing

Huseyin Ilcan et al.

Summary: This study successfully developed entirely construction and demolition waste-based geopolymer mortars suitable for 3-dimensional additive manufacturing. The research showed that these materials can be printed via a 3D printer without any defects and can maintain their initial shape under the weight of consecutive upper layers.

CONSTRUCTION AND BUILDING MATERIALS (2022)

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Review Engineering, Manufacturing

Biomimicry for 3D concrete printing: A review and perspective

Anton du Plessis et al.

Summary: Three-dimensional concrete printing is an exciting new manufacturing paradigm for the construction industry, showing signs of progress towards industrial application. However, the design rules for this technology have received little attention. This paper explores the potential for bio-inspired design to improve structural properties and enhance the potential of 3D concrete printing.

ADDITIVE MANUFACTURING (2021)

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Article Construction & Building Technology

Investigation of interlayer adhesion of 3D printable cementitious material from the aspect of printing process

Yiwei Weng et al.

Summary: This study investigated the effects of parameters on interlayer bond strength in 3DCP from different phases, including mixing, printing, and post-processing phases. The results showed that increasing superplasticizer dosage in the mixing phase, increasing pumping speed in the printing phase, and proper curing in the post-processing phase can improve interlayer bond strength. While surface moisture content (SMC) has a critical impact, material thixotropic index (Ithix) probably has a stronger influence on interlayer bond strength.

CEMENT AND CONCRETE RESEARCH (2021)

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Article Construction & Building Technology