Fracture- and Transport-Analysis of Heterogeneous 3D Printed Lamellar Cementitious Materials (2023-04)¶

10.1016/j.cemconcomp.2023.105034

Gupta Shashank, Esmaeeli Hadi, Prihar Arjun, Ghantous Rita, Weiss William, Moini Mohamadreza
Journal Article - Cement and Concrete Composites, Vol. 140

Abstract

This paper investigates the spatial characteristics of microstructural phases in relation to the fracture toughness in Mode-I/II and transport behavior in two orthogonal directions of lamellar 3D-printed cement paste compared to cast counterparts. Using segmentation techniques, it was found that intact 3D-printed materials represent porous interfaces and microchannels. A modified partial-notch Brazil-Nut test was proposed to characterize the Mode-I/II fracture toughness. A new laser-notching process was proposed to generate a sharp notch and account for the sensitivity of fracture processes to microstructural heterogeneities in 3D-printed materials. Unlike Mode-I, significantly higher Mode-II fracture toughness was found in 3D-printed material in the perpendicular direction compared to the cast, owing to the in/out-of-plane crack deflection along the interfaces. The porous interfacial regions were hypothesized to govern the crack initiation in both Mode-I/II. Water transport was characterized by absorption using Neutron Radiography, where interfacial heterogeneities act as capillary breaks, hence directionally influences water absorption and transport.

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59 References

11 Citations

BibTeX

@article{gupt_esma_prih_ghan.2023.FaTAoH3PLCM,
  author            = "Shashank Gupta and Hadi S. Esmaeeli and Arjun Prihar and Rita Maria Ghantous and William Jason Weiss and Mohamadreza Moini",
  title             = "Fracture- and Transport-Analysis of Heterogeneous 3D Printed Lamellar Cementitious Materials",
  doi               = "10.1016/j.cemconcomp.2023.105034",
  year              = "2023",
  journal           = "Cement and Concrete Composites",
  volume            = "140",
}

Formatted Citation

IEEE

S. Gupta, H. S. Esmaeeli, A. Prihar, R. M. Ghantous, W. J. Weiss and M. Moini, “Fracture- and Transport-Analysis of Heterogeneous 3D Printed Lamellar Cementitious Materials”, Cement and Concrete Composites, vol. 140, 2023, doi: 10.1016/j.cemconcomp.2023.105034.

CMOS

Gupta, Shashank, Hadi S. Esmaeeli, Arjun Prihar, Rita Maria Ghantous, William Jason Weiss, and Mohamadreza Moini. “Fracture- and Transport-Analysis of Heterogeneous 3D Printed Lamellar Cementitious Materials”. Cement and Concrete Composites 140 (2023). https://doi.org/10.1016/j.cemconcomp.2023.105034.