Interfacial Bond-Effects on Shear-Strength and Damage in 3D Printed Concrete Structures (2025-01)¶
10.1016/j.engfracmech.2025.110840
Shazad Qamar,
Journal Article - Engineering Fracture Mechanics, No. 110840
Abstract
The primary objective of this research is to investigate the impact of interfacial bonding properties on damage, bond shear strength, and double shear performance in 3D-printed concrete (3DPC) structures. A numerical model utilizing the traction-separation law was developed to comprehensively capture the characteristics of the interlayer and interstrip interfaces. Experimental findings reveal that horizontal shear deformation between printed layers and strips reduces the strength of 3D-printed specimens under both bond shear loading and double shear loading conditions. The bond shear and double shear strengths were notably greater in the mold-cast specimens and matrix regions than in the interlayer and interstrip regions. Specifically, the double shear strengths at the interlayer and interstrip interfaces are reduced by 22.2% and 27.4%, respectively, whereas the bond shear strengths at these interfaces decrease by 21.8% and 9.4%, respectively. The numerical analysis reveals that both the quantity and size of interlayers and interstrips significantly influence the shear strength of specimens subjected to bond shear and double shear loading conditions. Additionally, recommendations and key factors that affect the shear behavior of 3D-printed concrete have been proposed to enhance future simulation models of 3DPC.
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BibTeX
@article{shaz_li.2025.IBEoSSaDi3PCS,
author = "Qamar Shazad and Fangyuan Li",
title = "Interfacial Bond-Effects on Shear-Strength and Damage in 3D Printed Concrete Structures: A Combined Experimental and Numerical Study",
doi = "10.1016/j.engfracmech.2025.110840",
year = "2025",
journal = "Engineering Fracture Mechanics",
pages = "110840",
}
Formatted Citation
Q. Shazad and F. Li, “Interfacial Bond-Effects on Shear-Strength and Damage in 3D Printed Concrete Structures: A Combined Experimental and Numerical Study”, Engineering Fracture Mechanics, p. 110840, 2025, doi: 10.1016/j.engfracmech.2025.110840.
Shazad, Qamar, and Fangyuan Li. “Interfacial Bond-Effects on Shear-Strength and Damage in 3D Printed Concrete Structures: A Combined Experimental and Numerical Study”. Engineering Fracture Mechanics, 2025, 110840. https://doi.org/10.1016/j.engfracmech.2025.110840.