Relationship between water transport behaviour and interlayer voids of 3D printed concrete

Zhang, Yu; Huang, Qiao; Qian, Rusheng; Xue, Cuizhen; Feng, Qiong; Su, Li; Zhang, Yunsheng; Liu, Guojian; Du, Hongjian

doi:10.1016/j.conbuildmat.2022.126731

Cited by 30 publications

(1 citation statement)

References 57 publications

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“…Compared to conventional concrete, large carbonation depths were detected in 3DPC specimens due to interconnected pores and increased permeability. Also, for similar reasons, it was reported by Zhang et al 110 that 3DPC leads to faster water transport through the interlayer region than conventional concrete, resulting in a worse behavior of 3DPC against water penetration. However, it was reported that the degree of lack of fusion (LOF) in 3DPC specimens increases with the increase of the interlayer interval time, thus leading to greater carbonation depths.…”

Section: Acid Carbonation and Chloride Resistancesupporting

confidence: 57%

Mechanical properties, durability performance and interlayer adhesion of 3DPC mixtures: A state‐of‐the‐art review

Şahin

Mardani‐Aghabaglou

2023

Structural Concrete

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In this study, the strength and durability performance of 3D printing concrete mixtures (3DPC) were examined in terms of the materials used in their production and printing process parameters (interlayer interval time, printing speed, and nozzle shape). Due to the anisotropic nature of 3DPC, it was understood that the compressive strength depends on the loading direction. It was emphasized that it is necessary to control the shrinkage behavior of 3DPC mixtures due to the lack of formwork and the high dosage of binders. It was reported that the interlayer adhesion of 3DPC is highly dependent on the interlayer interval time and printing speed parameters. It was understood that nozzle shape and standoff distance affect the mechanical properties and surface roughness of 3DPC specimens, and this effect is more pronounced in mixtures with high static yield stress values.

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Section: Acid Carbonation and Chloride Resistancesupporting

confidence: 57%