Insights on the Capo d'Orlando flysch (NE Sicily) by means of geomechanics and sedimentology

Mineo, Simone; Pappalardo, G.; Casciano, Claudio Ivan; Stefano, Agata Di; Catalano, Stefano; Gagliano, Marco

doi:10.3301/ijg.2019.13

Cited by 7 publications

(3 citation statements)

References 37 publications

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“…-Sandstones (S): yellowish to grayish sandstones affected by a grain-size variability, from fine-to medium belonging to the Capo d'Orlando Flysch formation of northern Sicily. Such sandstones have been defined as quartzofeldspathic arcoses[40] and references therein. -Dolostones (D): cropping out on the Peloritani Mountains (northeastern Sicily) and belonging to the Longi-Taormina Unit, these rocks are characterized by a massive to brecciated structure and show the occurrence of calcite veins.…”

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Rock Emissivity Measurement for Infrared Thermography Engineering Geological Applications

Mineo

Pappalardo

2021

Applied Sciences

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Infrared thermography is a growing technology in the engineering geological field both for the remote survey of rock masses and as a laboratory tool for the non-destructive characterization of intact rock. In this latter case, its utility can be found either from a qualitative point of view, highlighting thermal contrasts on the rock surface, or from a quantitative point of view, involving the study of the surface temperature variations. Since the surface temperature of an object is proportional to its emissivity, the knowledge of this last value is crucial for the correct calibration of the instrument and for the achievement of reliable thermal outcomes. Although rock emissivity can be measured according to specific procedures, there is not always the time or possibility to carry out such measurements. Therefore, referring to reliable literature values is useful. In this frame, this paper aims at providing reference emissivity values belonging to 15 rock types among sedimentary, igneous and metamorphic categories, which underwent laboratory emissivity estimation by employing a high-sensitivity thermal camera. The results show that rocks can be defined as “emitters”, with emissivity generally ranging from 0.89 to 0.99. Such variability arises from both their intrinsic properties, such as the presence of pores and the different thermal behavior of minerals, and the surface conditions, such as polishing treatments for ornamental stones. The resulting emissivity values are reported and commented on herein for each different studied lithology, thus providing not only a reference dataset for practical use, but also laying the foundation for further scientific studies, also aimed at widening the rock aspects to investigate through IRT.

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Rock Emissivity Measurement for Infrared Thermography Engineering Geological Applications

Mineo

Pappalardo

2021

Applied Sciences

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“…The greater the damage degree, the more pronounced the differences become. [14][15][16][17][18] In summary, the emergence, initiation, and expansion of cracks within the rock are the fundamental causes of damage, representing the evolution of rock damage. This evolution induces changes in the macroscopic mechanical properties of the rock, including a decrease in elastic modulus, an increase in plastic strain, and an elevation in Poisson's ratio.…”

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“…Consequently, it is essential to distinguish the mechanical properties, energy evolution, and crushing characteristics of rock bodies with different damage degrees following mining disturbances from those of undamaged rock bodies. The greater the damage degree, the more pronounced the differences become 14–18 …”

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confidence: 99%

Experimental study on the bearing mechanical characteristics and deformation failure mechanism of damaged sandy mudstone

Zhang,

Zhang

et al. 2024

Fatigue Fract Eng Mat Struct

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Studying the mechanical properties and failure mechanisms of damaged rocks holds practical significance in guiding tunnel or roadway support and assessing the stability of engineering rock masses. To uncover the failure mechanisms of sandy mudstone with varying degrees of damage, we conducted cyclic loading‐unloading tests to create specimens at different damage levels. Subsequently, uniaxial loading tests were performed to investigate the fundamental mechanical properties, wave velocity, and acoustic emission (AE) parameter evolution characteristics of the damaged specimens. The classification of damaged rocks was based on the energy evolution characteristics of damaged sandy mudstone. Finally, we discuss the damage and deterioration mechanisms of different types of sandy mudstone. The findings contribute to establishing a theoretical foundation for evaluating the degree of rock damage.

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Study on the Law of Failure Acoustic–Thermal Signal of Weakly Cemented Fractured Rock with Different Dip Angles

Zhang

Zhao

2023

Rock Mech Rock Eng

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Insights on the Capo d'Orlando flysch (NE Sicily) by means of geomechanics and sedimentology

Cited by 7 publications

References 37 publications

Rock Emissivity Measurement for Infrared Thermography Engineering Geological Applications

Rock Emissivity Measurement for Infrared Thermography Engineering Geological Applications

Experimental study on the bearing mechanical characteristics and deformation failure mechanism of damaged sandy mudstone

Study on the Law of Failure Acoustic–Thermal Signal of Weakly Cemented Fractured Rock with Different Dip Angles

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