Thermal Infrared Radiation and Laser Ultrasound for Deformation and Water Saturation Effects Testing in Limestone
During the operation of engineering structures made of natural stone, for industrial and civil purposes, an important parameter in monitoring their technical condition is the assessment of their reliability and safety under the influence of various external influences. In this case, high-quality mon...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-12-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/12/24/4036 |
| _version_ | 1797545207833559040 |
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| author | Alexander Kravcov Elena Cherepetskaya Pavel Svoboda Dmitry Blokhin Pavel Ivanov Ivan Shibaev |
| author_facet | Alexander Kravcov Elena Cherepetskaya Pavel Svoboda Dmitry Blokhin Pavel Ivanov Ivan Shibaev |
| author_sort | Alexander Kravcov |
| collection | DOAJ |
| description | During the operation of engineering structures made of natural stone, for industrial and civil purposes, an important parameter in monitoring their technical condition is the assessment of their reliability and safety under the influence of various external influences. In this case, high-quality monitoring of the stress–strain state of natural stone structures, its physical, mechanical and filtration properties, as well as internal structural features is necessary to study the possibility of replacing individual elements of objects that have lost their original characteristics. To assess the state of geomaterials, this article proposes using a complex of introscopic methods, including infrared radiometry and laser-ultrasound structuroscopy. An important aspect is the calculation based on the Green–Christoffel equation of the velocity of a quasi-longitudinal wave in limestone consisting of densely packed, chaotically oriented calcite grains with a small quartz content. For the first time, using laser-ultrasonic structuroscopy and standard methods for determining open porosity, both total and closed porosity were determined. This allowed us to find the values of specific heat capacities of dry and water-saturated samples. The obtained values are used to find the ratio of changes in the temperature of dry and water-saturated samples at the same stress values. The results obtained demonstrate the need to take into account changes in the intensity of thermal radiation of limestone with different moisture content under conditions of uniaxial compression, when identifying changes in the stress state of elements of stone structures in real conditions. |
| first_indexed | 2024-03-10T14:12:11Z |
| format | Article |
| id | doaj.art-e0d5c105e3b241bab9d588609ce66acb |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-10T14:12:11Z |
| publishDate | 2020-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-e0d5c105e3b241bab9d588609ce66acb2023-11-21T00:06:06ZengMDPI AGRemote Sensing2072-42922020-12-011224403610.3390/rs12244036Thermal Infrared Radiation and Laser Ultrasound for Deformation and Water Saturation Effects Testing in LimestoneAlexander Kravcov0Elena Cherepetskaya1Pavel Svoboda2Dmitry Blokhin3Pavel Ivanov4Ivan Shibaev5Department of Construction Technology, Faculty of Civil Engineering, Czech Technical University in Prague, 166 29 Prague, Czech RepublicNational Mining Institute, University of Science and Technology MISiS, 119049 Moscow, RussiaDepartment of Construction Technology, Faculty of Civil Engineering, Czech Technical University in Prague, 166 29 Prague, Czech RepublicNational Mining Institute, University of Science and Technology MISiS, 119049 Moscow, RussiaNational Mining Institute, University of Science and Technology MISiS, 119049 Moscow, RussiaNational Mining Institute, University of Science and Technology MISiS, 119049 Moscow, RussiaDuring the operation of engineering structures made of natural stone, for industrial and civil purposes, an important parameter in monitoring their technical condition is the assessment of their reliability and safety under the influence of various external influences. In this case, high-quality monitoring of the stress–strain state of natural stone structures, its physical, mechanical and filtration properties, as well as internal structural features is necessary to study the possibility of replacing individual elements of objects that have lost their original characteristics. To assess the state of geomaterials, this article proposes using a complex of introscopic methods, including infrared radiometry and laser-ultrasound structuroscopy. An important aspect is the calculation based on the Green–Christoffel equation of the velocity of a quasi-longitudinal wave in limestone consisting of densely packed, chaotically oriented calcite grains with a small quartz content. For the first time, using laser-ultrasonic structuroscopy and standard methods for determining open porosity, both total and closed porosity were determined. This allowed us to find the values of specific heat capacities of dry and water-saturated samples. The obtained values are used to find the ratio of changes in the temperature of dry and water-saturated samples at the same stress values. The results obtained demonstrate the need to take into account changes in the intensity of thermal radiation of limestone with different moisture content under conditions of uniaxial compression, when identifying changes in the stress state of elements of stone structures in real conditions.https://www.mdpi.com/2072-4292/12/24/4036infrared radiometrylaser-ultrasonic structuroscopylimestonestress–strain statewater saturation |
| spellingShingle | Alexander Kravcov Elena Cherepetskaya Pavel Svoboda Dmitry Blokhin Pavel Ivanov Ivan Shibaev Thermal Infrared Radiation and Laser Ultrasound for Deformation and Water Saturation Effects Testing in Limestone Remote Sensing infrared radiometry laser-ultrasonic structuroscopy limestone stress–strain state water saturation |
| title | Thermal Infrared Radiation and Laser Ultrasound for Deformation and Water Saturation Effects Testing in Limestone |
| title_full | Thermal Infrared Radiation and Laser Ultrasound for Deformation and Water Saturation Effects Testing in Limestone |
| title_fullStr | Thermal Infrared Radiation and Laser Ultrasound for Deformation and Water Saturation Effects Testing in Limestone |
| title_full_unstemmed | Thermal Infrared Radiation and Laser Ultrasound for Deformation and Water Saturation Effects Testing in Limestone |
| title_short | Thermal Infrared Radiation and Laser Ultrasound for Deformation and Water Saturation Effects Testing in Limestone |
| title_sort | thermal infrared radiation and laser ultrasound for deformation and water saturation effects testing in limestone |
| topic | infrared radiometry laser-ultrasonic structuroscopy limestone stress–strain state water saturation |
| url | https://www.mdpi.com/2072-4292/12/24/4036 |
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