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<p>This paper examines advancements in 3D concrete printing (3DCP), emphasizing material innovations, reinforcement methods, and sustainability. It outlines the evolution of 3DCP from prototyping to large-scale construction and focuses on advanced cementitious mixtures incorporating supplementary cementitious materials (SCMs) such as fly ash, slag, and silica fume, along with nanomaterials like nanosilica and carbon nanotubes. These additions enhance compressive strength, flowability, shrinkage control, and durability while lowering the carbon footprint. The role of chemical admixtures, including superplasticizers and rheology modifiers, is discussed for improving printability and interlayer bonding. The paper further explores reinforcement strategies, such as steel, glass, and polymer fibres, that improve tensile strength and crack resistance. It also reviews extrusion-based additive manufacturing techniques that enable the construction of complex geometries with high precision. In addition, self-healing mechanisms and environmentally conscious material choices are evaluated for extending service life and promoting circular construction practices. Through recent studies and case examples, the paper demonstrates that combining SCMs, nanomaterials, and optimized reinforcement systems significantly enhances the structural performance, sustainability, and scalability of 3D-printed concrete. The findings highlight 3DCP’s potential to deliver resilient, cost-effective, and eco-efficient infrastructure for the future built environment.</p>

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Advancements in 3D Concrete Printing: Materials, Techniques and Applications

  • 期刊论文

  • 发表日期：

    2026年6月1日

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  • Salim Barbhuiya,
  • Bibhuti Bhusan Das,
  • Dibyendu Adak

摘要

This paper examines advancements in 3D concrete printing (3DCP), emphasizing material innovations, reinforcement methods, and sustainability. It outlines the evolution of 3DCP from prototyping to large-scale construction and focuses on advanced cementitious mixtures incorporating supplementary cementitious materials (SCMs) such as fly ash, slag, and silica fume, along with nanomaterials like nanosilica and carbon nanotubes. These additions enhance compressive strength, flowability, shrinkage control, and durability while lowering the carbon footprint. The role of chemical admixtures, including superplasticizers and rheology modifiers, is discussed for improving printability and interlayer bonding. The paper further explores reinforcement strategies, such as steel, glass, and polymer fibres, that improve tensile strength and crack resistance. It also reviews extrusion-based additive manufacturing techniques that enable the construction of complex geometries with high precision. In addition, self-healing mechanisms and environmentally conscious material choices are evaluated for extending service life and promoting circular construction practices. Through recent studies and case examples, the paper demonstrates that combining SCMs, nanomaterials, and optimized reinforcement systems significantly enhances the structural performance, sustainability, and scalability of 3D-printed concrete. The findings highlight 3DCP’s potential to deliver resilient, cost-effective, and eco-efficient infrastructure for the future built environment.