How Do the Contact Surface Forces Affect the Inter-Layer Bond Strength of 3D Printed Mortar? (2022-07)¶

10.1016/j.cemconcomp.2022.104675

Pan Tinghong, Guo Rongxin, Jiang Yaqing, Ji Xuping
Journal Article - Cement and Concrete Composites, Vol. 133

Abstract

Depositing of printing layer on the previous printed structures leads to the formation of contact surface forces between two layers. However, it is not clear how do the contact surface forces affect the interlayer bond strength of 3D printed mortar? In order to answer the above-mentioned question, the contact surface forces and the resulting interlayer bond strength of double−layer printed structures with different nozzle stand−off distance and travel speed of the nozzle are analyzed in this paper. Results indicate that the outflow of the extrudate and movement of the nozzle may strike and shear the previously deposited layer, resulting in a highest pressure directly below the nozzle, which is several times larger than those caused by the self-weight of a single layer. Increasing the nozzle stand−off distance would decrease contact surface forces, while increasing the travel speed of the nozzle would increase contact surface forces. The contact surface forces between two layers directly affect the interlayer bond strength of printed structures.

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60 References

26 Citations

BibTeX

@article{pan_guo_jian_ji.2022.HDtCSFAtILBSo3PM,
  author            = "Tinghong Pan and Rongxin Guo and Yaqing Jiang and Xuping Ji",
  title             = "How Do the Contact Surface Forces Affect the Inter-Layer Bond Strength of 3D Printed Mortar?",
  doi               = "10.1016/j.cemconcomp.2022.104675",
  year              = "2022",
  journal           = "Cement and Concrete Composites",
  volume            = "133",
}

Formatted Citation

IEEE

T. Pan, R. Guo, Y. Jiang and X. Ji, “How Do the Contact Surface Forces Affect the Inter-Layer Bond Strength of 3D Printed Mortar?”, Cement and Concrete Composites, vol. 133, 2022, doi: 10.1016/j.cemconcomp.2022.104675.

CMOS

Pan, Tinghong, Rongxin Guo, Yaqing Jiang, and Xuping Ji. “How Do the Contact Surface Forces Affect the Inter-Layer Bond Strength of 3D Printed Mortar?”. Cement and Concrete Composites 133 (2022). https://doi.org/10.1016/j.cemconcomp.2022.104675.