Ultrasonic pulse velocity as a way of improving uniaxial compressive strength estimations from Leeb hardness measurements
Autor: | Vicente Brotons, David Benavente, J. Martínez-Martínez, Miguel Gomez-Heras, Rafael Fort, Concepción Pla |
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Přispěvatelé: | Universidad de Alicante. Departamento de Ciencias de la Tierra y del Medio Ambiente, Universidad de Alicante. Departamento de Ingeniería Civil, Petrología Aplicada, Ingeniería Hidráulica y Ambiental (INGHA) |
Rok vydání: | 2020 |
Předmět: |
Materials science
Stone decay 0211 other engineering and technologies 020101 civil engineering 02 engineering and technology 0201 civil engineering Equotip Rock mechanics Nondestructive testing 021105 building & construction Leeb hardness General Materials Science Geotechnical engineering Porosity Civil and Structural Engineering business.industry Rock weathering Estimator Building and Construction Non-destructive Testing Ultrasonic Pulse Velocity Compressive strength Ultrasonic pulse velocity Ingeniería Hidráulica business Petrología y Geoquímica |
Zdroj: | Construction and Building Materials. 261:119996 |
ISSN: | 0950-0618 |
DOI: | 10.1016/j.conbuildmat.2020.119996 |
Popis: | Uniaxial compressive strength (UCS) is one of the most important parameters in rock mechanics. Nevertheless, there are instances when it is not advisable to perform UCS standardised tests, because it is not possible to sample or because it is not feasible to obtain a significant enough set of results. Leeb hardness (LHD) is used for estimating UCS non-destructively and, currently, most research is focussed on improving its quality as UCS estimator by either increasing the number of samples or combining several sets of samples to obtain better fitting curves. This paper analyses if combining LHD with ultrasonic pulse velocity (UPV) improves UCS estimations obtained from LHD alone, analogously to what is already proven for SonReb methods. This is done considering how different lithology and, particularly, porosity impact on UCS estimations obtained from LHD. Results show that combining ultrasonic pulse velocity and Leeb hardness is an effective way to improve UCS estimations through portable and non-destructive techniques in non-porous polymineral rocks, in which Leeb hardness leads to relatively poor (R2 = 0.779) UCS estimations if used on its own. This work was supported by Top Heritage (P2018/NMT-4372) programme from the Regional Government of Madrid (Spain). |
Databáze: | OpenAIRE |
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