Experimental study on failure and fracturing attributes of granite after thermal treatments with different cooling conditions

Srinivasan, Vinoth; Hasainar, Haseeb; Singh, T. N.

doi:10.1016/j.enggeo.2022.106867

Cited by 32 publications

(6 citation statements)

References 47 publications

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“…Specifically, the deformation energy, represented by the area under the deformation curve, is the lowest for the B-type samples (illustrated by the orange curve-Figure 8). This finding agrees with the findings discussed in [59][60][61], highlighting the significant impact of the quenching cooling process on strength and elastic properties. Namely, the thermal stress induced by the temperature disparity between the rock and the coolant widens existing cracks, initiates new ones, and damages the rock's internal structure.…”

Section: Discussionsupporting

confidence: 92%

The Comminution of Chert Gravel by Microwave Irradiation

Tzibulsky,

Frid

2024

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Chert, a by-product rock of sand quarrying, has historically posed economic challenges for aggregate production, resulting in significant “waste” accumulation in quarries. Our study investigates the effect of microwave irradiation on the mechanical properties of chert gravel, a mineralogically homogenous material composed of fine quartz grains. The results, which demonstrate that increased irradiation time leads to a substantial decrease in chert gravel strength (by a factor of 4–6 for 2.5 min of irradiation), underscore the potential impact of this research on comminution processes. With quenching altering the fractional content of the samples after the crushing test, reducing the Gravel-to-Sand ratio, this study is driven by the promising potential of crushed chert gravel as a pivotal aggregate within the concrete and asphalt industries, offering a practical solution to their material needs. The urgent need to rehabilitate previously utilized quarry areas, offering an environmentally beneficial solution for which we all should be responsible, motivated the present study.

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Section: Discussionsupporting

confidence: 92%

The Comminution of Chert Gravel by Microwave Irradiation

Tzibulsky,

Frid

2024

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“…Specifically, the deformation energy, represented by the area under the deformation curve, is the lowest for the A-type samples (illustrated by the orange curve -Figure 3). This finding agrees with the findings discussed in [35][36][37], highlighting the significant impact of the quenching cooling process on strength and elastic properties. Namely, the thermal stress induced by the temperature disparity between the rock and the coolant widens existing cracks, initiates new ones, and damages the rock's internal structure.…”

Section: Discussionsupporting

confidence: 92%

The Comminution of Chert Gravel by Microwave Irradiation for Reuse Optimization of Quarry Areas

Tzibulsky,

Frid

2023

Preprint

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Chert rock is a by-product of sand quarrying (about 40% in the geological section). All attempts to use ordinary technologies for aggregate production from chert have been economically unsuccessful, resulting in significant chert "waste" accumulation covering vast quarry areas. This paper presents the study results of the effect of microwave irradiation on the mechanical properties of chert gravel, which is mineralogically relatively homogenous and consists of fine quartz grains. The results show that an increase in irradiation time decreases the strength of chert gravel (by a factor of 4-6 for the 2.5 min of irradiation), while the quenching changes the fractional content of the samples after the crushing test, decreasing the Gravel-to-Sand ratio.

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“…Common experimental methods for applying the temperature effect include preheating treatment and real‐time high‐temperature heating (Yang et al., 2019, 2020). The former one separates heating and mechanical loading during test procedures, therefore requiring simple experimental equipment and ease of implementation; hence, many early studies were conducted based on this method (Nicco et al., 2020; Peng et al., 2016; Srinivasan et al., 2022). The latter one, however, demands maintaining a constant preset temperature during mechanical loading, which poses stringent challenges to laboratory equipment, and related research is still in its infancy (Kumari et al., 2017; X. Ma et al., 2020, 2023; Zhou et al., 2022).…”

Section: Introductionmentioning

confidence: 99%

Micro‐Thermomechanical Modeling of Rocks With Temperature‐Dependent Friction and Damage Laws

Lv,

Ren,

Lai

et al. 2024

JGR Solid Earth

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Temperature serves as a critical yet elusive factor impacting the mechanical properties of deep rocks. In this work, we shall develop a new micro‐thermomechanical model for rocks based on the Mori‐Tanaka homogenization scheme. Free energy and thermodynamic forces are deduced within the framework of irreversible thermodynamics, including the local stress applied on the mesocracks, damage driving force, macroscopic stress, and entropy. The salient innovation of this study lies in formulating subtle physically based temperature‐dependent friction and damage laws, considering the influence of ambient temperature on the mesocracking in rocks. Through a coupled friction‐damage analysis, a temperature‐dependent quasi‐static strength criterion and analytical stress‐strain‐damage relations are then derived. Physical implications and calibration methods of each parameter in the proposed model are meticulously presented. Furthermore, a semi‐implicit plasticity damage decoupled procedure (SIPDDC) integration algorithm is employed for the numerical implementation of the proposed model. Subsequently, numerical simulations are conducted to obtain the mechanical response of Jinping marble, Beibei sandstone, and Gongjue granite under various real‐time temperature‐confining pressure coupling conventional triaxial compression tests (TP‐CTC). The congruence of stress‐strain curves between model predictions and experimental data validates the robust performance and potential applicability of the proposed model.

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Experimental study on failure and fracturing attributes of granite after thermal treatments with different cooling conditions

Cited by 32 publications

References 47 publications

The Comminution of Chert Gravel by Microwave Irradiation

The Comminution of Chert Gravel by Microwave Irradiation

The Comminution of Chert Gravel by Microwave Irradiation for Reuse Optimization of Quarry Areas

Micro‐Thermomechanical Modeling of Rocks With Temperature‐Dependent Friction and Damage Laws

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