Experimental Study on Mechanical and Energy Properties of Granite under Dynamic Triaxial Condition

Wang, Z. L.; Li, H. R.; Wang, J. G.; Shi, Heng

doi:10.1520/gtj20170237

Cited by 10 publications

(2 citation statements)

References 23 publications

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“…(3) (equals the OE laboratory conditions, such as high-temperature pretreatment and uniaxial and triaxial compression tests. There has also been significant work on rock mechanical characteristics, failure modes, and brittle plasticity (Wan et al, 2007;Gong and Zhao, 2007;Xi et al, 2010;Yang et al, 2012;Xu et al, 2014;Sun et al, 2015;Yang et al, 2017;Zhou et al, 2018).…”

Section: Calculation Methods Of Rock Brittlenessmentioning

confidence: 99%

Quantitative analysis of the influence of temperature and confining pressure on brittleness of granite: A review

Zhao¹

2020

Acta Geodynamica Et Geomaterialia

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In order to quantitatively study the influence of temperature and confining pressure on brittle plasticity of granite, this paper reviews previous studies regarding quantitative calculation methods for the brittle-plastic behaviors of rocks and their mechanical characteristics under high temperatures and confining pressures. Combining the experimental results for temperatures and confining pressures with theoretical calculations of brittleness and plasticity allowed quantitative calculations and evaluations for the brittleness and plasticity of granite to be obtained. The main conclusions are as follows. (1) High temperatures lead to a transformation of granite from brittle failure to plastic failure. Comparing six conventional empirical equations from the literature, the B 3 and B 6 can more accurately describe the relationship between the brittleness and temperature of granite. (2) When the confining pressure σ 3 is less than 20 MPa, the internal pore structure and fractures of granite are re-compacted and reduced, which gradually increases its brittleness. With the increasing confining pressure, the pore structure changes again after exceeding 20 MPa. This initiates new cracks, which ultimately leads to a decrease of the granite brittleness. (3) The abrupt temperature for the brittle-plastic transformation of granite is approximately 800 °C, and the brittle-plastic transformation of granite is mainly affected by temperature and not the confining pressure.

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Section: Calculation Methods Of Rock Brittlenessmentioning

confidence: 99%

Quantitative analysis of the influence of temperature and confining pressure on brittleness of granite: A review

Zhao¹

2020

Acta Geodynamica Et Geomaterialia

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“…Wang et al [25] determined the type I (open mode) dynamic fracture toughness of rocks by affixing strain gauges to Brazilian disc (CSTBD) samples with cracks on the sample surface and subjecting them to the radial impact of a Hopsonkin separator. Wang et al [26] conducted an experimental study on the mechanical and energetic properties of granite under dynamic triaxial loading and investigated the effects of impact velocity and enclosure pressure on the stress-strain curve response, dynamic strength, plastic deformation, energy loss, and damage mode of granite. Wong et al [27] investigated, through uniaxial compression tests, the friction of rock-like fracture materials with different fracture dip angles, different dip bridges, and different fracture contact surfaces.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Fracture and Energy Evolution Characterization of Naturally Fractured Granite Subjected to Multilevel Cyclic Loads

Guo

Wang

2021

Geofluids

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Naturally fractured rock mass is susceptible to stress disturbance and could result in the stimulation of natural fractures and even serious geological hazards. In this work, multilevel uniaxial fatigue loading experiments were carried out to reveal the fracture and energy evolution of naturally fractured granite using stress-strain descriptions and energy evolution analysis. Results reveal the influence of natural fracture on mechanical properties of granite, regarding the fatigue lifetime, fatigue deformation characteristics, fatigue damage, energy evolution, and fatigue failure pattern. Volumetric and shear processes caused by the sliding and shearing along the natural fracture control the whole failure process. The energy dissipation and release characteristics are strongly impacted by natural fractures. The elastic energy and dissipated energy both decrease with increasing natural fracture volume, growth of the dissipated energy becomes faster for rock near to failure. It is proved that the dissipated energy is mainly used to activate the preexisting natural fractures.

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Dynamic response characteristics of dry and water-saturated schist under impact loading

Zhou

Chen

2020

J. Mt. Sci.

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Experimental Study on Mechanical and Energy Properties of Granite under Dynamic Triaxial Condition

Cited by 10 publications

References 23 publications

Quantitative analysis of the influence of temperature and confining pressure on brittleness of granite: A review

Quantitative analysis of the influence of temperature and confining pressure on brittleness of granite: A review

Dynamic Fracture and Energy Evolution Characterization of Naturally Fractured Granite Subjected to Multilevel Cyclic Loads

Dynamic response characteristics of dry and water-saturated schist under impact loading

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