Lubrication-Layer Properties During Concrete Pumping (2013-01)¶

10.1016/j.cemconres.2012.11.001

Choi Myoungsung, Roussel Nicolas, Kim Youngjin, Kim Jinkeun
Journal Article - Cement and Concrete Research, Vol. 45, pp. 69-78

Abstract

In order to progress in the understanding ofthe physical phenomena involved in the pumping process ofconcrete, we study in this work the properties of the lubrication layer, which forms between the pipe and the bulk material. Using ultrasonic velocity profiler, we measure the thickness of this lubrication layer in the case of real size pumping circuits. Our experimental, analytical and numerical results suggest that, from a rheological point of view, this layer behaves similarly as the constitutive mortar of the pumped concrete. Moreover, this layer thickness does not seem to depend on flow rate. We finally propose a simple analytical relation allowing for a rough estimation of the pumping pressure.

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BibTeX

@article{choi_rous_kim_kim.2013.LLPDCP,
  author            = "Myoungsung Choi and Nicolas Roussel and Youngjin Kim and Jinkeun Kim",
  title             = "Lubrication-Layer Properties During Concrete Pumping",
  doi               = "10.1016/j.cemconres.2012.11.001",
  year              = "2013",
  journal           = "Cement and Concrete Research",
  volume            = "45",
  pages             = "69--78",
}

Formatted Citation

IEEE

M. Choi, N. Roussel, Y. Kim and J. Kim, “Lubrication-Layer Properties During Concrete Pumping”, Cement and Concrete Research, vol. 45, pp. 69–78, 2013, doi: 10.1016/j.cemconres.2012.11.001.

CMOS

Choi, Myoungsung, Nicolas Roussel, Youngjin Kim, and Jinkeun Kim. “Lubrication-Layer Properties During Concrete Pumping”. Cement and Concrete Research 45 (2013): 69–78. https://doi.org/10.1016/j.cemconres.2012.11.001.