Experimental investigation of thermal cycling effect on physical and mechanical properties of heated granite after water cooling

Zhu, Zhennan; Tian, Hong; Chen, Jie; Jiang, Guosheng; Dou, Bin; Xiao, Pan; Mei, Gang

doi:10.1007/s10064-019-01705-w

Cited by 36 publications

(17 citation statements)

References 37 publications

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“…It is shown that the hyaloclastite's velocity decreases by about 2.54% after the first temperature cycle, and by about 1.15% after the second temperature cycle. This indicates that during the temperature cycle, some of the grains tend to be separated from the rock frame, and the rock structure is irrecoverably deformed and destroyed (Zhu et al., 2019). These changes were not taken into account in our model.…”

Section: Resultsmentioning

confidence: 99%

Temperature Effect on the Velocity‐Porosity Relationship in Rocks

Müller

2021

JGR Solid Earth

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With the ever increasing demand for natural resources, the exploitation depth of oil and gas resources has been increasing (Xu et al., 2017). At several 1,000 m underground, the temperature typically exceeds 100°C, resulting in rock mechanical properties differing significantly from those measured at room temperature. As a consequence, modeling the influence of in situ pressure and temperature on rock properties has become more and more important (Cheng et al., 2017; Popov et al., 2003). The effects of temperature on various physical parameters of rocks, especially on wave velocities, are of great significance for geothermal reservoir characterization and are well documented (

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Section: Resultsmentioning

confidence: 99%

Temperature Effect on the Velocity‐Porosity Relationship in Rocks

Müller

2021

JGR Solid Earth

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“…Geological exploration data have shown that deep crystalline rock (granite, biotite gneiss, etc.) reservoirs have sufficient geothermal energy to serve as geothermal reservoirs [14,15]. So, a deep understanding of the mechanical behaviors of crystalline rocks suffering drastic temperature changes is of great importance for engineering applications involving high-temperature rock mechanics [4,16].…”

Section: Introductionmentioning

confidence: 99%

“…Past studies have shown that there is no doubt that high-temperature treatment and rapid cooling have a thermal shock on the mechanical properties of crystalline rocks. Scholars have done extensive research on the physical, mechanical, and microstructure performances of granites exposed to thermal shock [4,5,9,10,[14][15][16][17][18][19][20][21][22][23][24]. Martyushev et al confirmed that effective pressure can alter reservoir properties [25,26].…”

Section: Introductionmentioning

confidence: 99%

“…Kumari et al [23] studied the effect mechanism of cooling rate on the physical and mechanical properties of granite and found that thermal shock will weaken the mechanical behaviors of rock, which is mainly achieved by forming microcracks in rock. Zhu et al studied experimentally the influence of thermal shock on the physical and mechanical properties of granite and the cracking characteristics of granite under the thermal shock [5,14,18,40,41]. The results show that the high temperature treatment causes lots of microcracks in the specimens.…”

Section: Introductionmentioning

confidence: 99%

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Mechanical Behaviors of Granite after Thermal Shock with Different Cooling Rates

et al. 2021

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During the construction of nuclear waste storage facilities, deep drilling, and geothermal energy development, high-temperature rocks are inevitably subjected to thermal shock. The physical and mechanical behaviors of granite treated with different thermal shocks were analyzed by non-destructive (P-wave velocity test) and destructive tests (uniaxial compression test and Brazil splitting test). The results show that the P-wave velocity (VP), uniaxial compressive strength (UCS), elastic modulus (E), and tensile strength (st) of specimens all decrease with the treatment temperature. Compared with air cooling, water cooling causes greater damage to the mechanical properties of granite. Thermal shock induces thermal stress inside the rock due to inhomogeneous expansion of mineral particles and further causes the initiation and propagation of microcracks which alter the mechanical behaviors of granite. Rapid cooling aggravates the damage degree of specimens. The failure pattern gradually transforms from longitudinal fracture to shear failure with temperature. In addition, there is a good fitting relationship between P-wave velocity and mechanical parameters of granite after different temperature treatments, which indicates P-wave velocity can be used to evaluate rock damage and predict rock mechanical parameters. The research results can provide guidance for high-temperature rock engineering.

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“…Heating-cooling treatment has been applied on rock materials to carry out uniaxial and tri-axial experiments and thermal mechanical parameters of treated rock were obtained (Zhang et al 2017). And cyclic loading tests of rock after various heating-cooling treatments were also performed to achieve mechanical characteristics and deformation laws (Zhu et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Experimental and theoretical study of compressive mechanical behavior of red sandstone after heating-cooling treatment

Liu

Shao

et al. 2021

Preprint

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In order to investigate compressive mechanical behaviors of rock materials after different heating-cooling treatments, in this paper, a series of uniaxial compressive experiments are carried out on red sandstone samples after various heating temperature (from 25℃ to 1000℃) and water cooling treatments (10℃) to obtain evolution laws of mechanical property. The evolution laws of peak strength, elastic modulus, primary wave velocity and micro-structure are analyzed in details. And for better reflecting compressive stress-strain behaviors of red sandstone after heating-cooling treatments, based on Caputo variable-order fractional calculus, considering strain correlation and constant strain loading rate, we propose a novel variable-order fractional constitutive model to describe stress-strain behaviors of red sandstone samples after heating-cooling treatments. The validation of proposed model is well verified and a comparative study between proposed variable-order fractional constitutive model and constant-order fractional constitutive model is performed to highlight the advantage of proposed model. The evolutions of mechanical characteristics are revealed by presented varying-order function related to strain and the influence of fitting parameters on stress-strain behaviors are also discussed for deeply comprehending compressive mechanical mechanism of red sandstone after heating-cooling treatments.

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Experimental investigation of thermal cycling effect on physical and mechanical properties of heated granite after water cooling

Cited by 36 publications

References 37 publications

Temperature Effect on the Velocity‐Porosity Relationship in Rocks

Temperature Effect on the Velocity‐Porosity Relationship in Rocks

Mechanical Behaviors of Granite after Thermal Shock with Different Cooling Rates

Experimental and theoretical study of compressive mechanical behavior of red sandstone after heating-cooling treatment

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