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Geotechnical and Geological Engineering

, Volume 37, Issue 1, pp 121–128 | Cite as

Mesoscopic Weakening Feature of Marble During Water Rock Interaction

  • Jin Xu
  • Jiasheng Zhang
  • Taoying Liu
Original Paper
  • 81 Downloads

Abstract

Research on the water–rock interaction has become an important subject in rock mechanics field, the link between the mineral particles is weakened and the microstructure of rock mass is changed because of chemical corrosion effect after water–rock interaction. In this paper, double torsion testing of marble specimens has been adopt to determine subcritical crack propagation parameters during rock interaction, the morphological characteristics in this process were also quantified while the surface was scanned by a three-dimensional high-accuracy non-contact laser morphology instrument Talysurf CLI 2000. It shows the discreteness and deviation degree of datum plane on the surface of the rock specimens are increased after water–rock interaction, the highness difference decreased and become more coordinated. Meanwhile, the corresponding relationship between stress intensity factor KI and subcritical crack growth velocity v shows that rock interaction speeds up the subcritical crack growth. Those testing results provide a basis for the micro damage mechanism studying for rock engineering stability which are related to hydrochemistry.

Keywords

Water rock interaction Microscopic damage Morphology of surface Double torsion specimen Subcritical crack growth 

Notes

Acknowledgements

This paper gets its funding from Project (41502327, 51474252, 51774323) supported by National Natural Science Foundation of China; Project (2018JJ3676) supported by Natural Science Foundation of Hunan Proince; The Key Research & Development Program of Hunan Province (2017GK2190); The authors wish to acknowledge these supports.

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.School of Civil EngineeringCentral South UniversityChangshaChina
  2. 2.School of Resources and Safety EngineeringCentral South UniversityChangshaChina

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