Strength Weakening and Energy Mechanism of Rocks Subjected to Wet–Dry Cycles

  • Xuxin ChenEmail author
  • Ping He
  • Zhe Qin
Original Paper


Based uniaxial compression tests of altered granite, the weakening laws of rock strength and energy mechanism of rock failure for altered granite subjected to wet–dry cycles are analyzed. Results show that: (1) with increasing number of wet–dry cycles, the rock weakening coefficient and damage variables increase gradually. The maximum weakening coefficient of altered granite-1 was 50.22%, and the damage variable was up to 63.84%. The maximum weakening coefficient of altered granite-2 was 43.22%, and the damage variable was up to 44.00%. (2) The total energy of rock increases gradually with the number of wet–dry cycles. Elastic strain energy in the rock increases first then decreases. The energy storage limit decreases gradually, showing a linear or exponential relationship with the number of wet–dry cycles. (3) The rock damage energy mechanism under wet–dry cycles is obtained via the rock dissipation energy. The rock dissipation energy increases gradually as the number of wet–dry cycles increases. Wet–dry cycles causes irreversible damage to the rock internal structure.


Wet–dry cycles Weakening coefficient Damage variable Energy mechanism 



This paper are supported by Shandong Provincial Natural Science Foundation (ZR2017BEE014), Scientific Research Foundation of Shandong University of Science and Technology for Recruited Talents (2017RCJJ050). The financial aids are gratefully acknowledged.

Compliance with Ethical Standards

Conflict of interest

The authors declare that they have no conflict of interest regarding the publication of this paper.


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© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.School of Civil EngineeringBeijing Jiaotong UniversityBeijingChina
  2. 2.Tunneling and Underground Engineering Research Center of Ministry of EducationBeijingChina
  3. 3.Shandong Key Laboratory of Civil Engineering Disaster Prevention and MitigationShandong University of Science and TechnologyQingdaoChina

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