The effect of thermal cycles on limestone mechanical degradation

This work presents the results of an experimental program performed to study the effect of long series of moderate thermal cycles on the mechanical response of a limestone rock. Samples were exposed to more than 1000 temperature cycles from 10° to 50°C in dry conditions. Rock degradation was followe...

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Bibliographic Details
Published in:International journal of rock mechanics and mining sciences (Oxford, England : 1997) England : 1997), 2018-09, Vol.109, p.115-123
Main Authors: Villarraga, C.J., Gasc-Barbier, M., Vaunat, J., Darrozes, J.
Format: Article
Language:English
Subjects:
Compression
Compression tests
Compressive strength
Degradation
Earth Sciences
Elastic waves
Engineering Sciences
Enginyeria civil
Geomorphology
Geotècnia
Limestone
Longitudinal waves
Mechanical analysis
Mechanical properties
Mechanics
Mecànica de roques
Porosity
Rocks
Roques calcàries
Sciences of the Universe
Temperature
Wave velocity
Àrees temàtiques de la UPC
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Summary:This work presents the results of an experimental program performed to study the effect of long series of moderate thermal cycles on the mechanical response of a limestone rock. Samples were exposed to more than 1000 temperature cycles from 10° to 50°C in dry conditions. Rock degradation was followed by measuring axial and radial strains, elastic wave velocities and uniaxial compression strength during the test. Results evidence an accumulation of strains and a decrease in P-wave velocity and uniaxial compression strength with no noticeable change in porosity. This study highlights the important effects that temperature cycles have on rock mechanical properties, even for moderate cycle amplitudes.
ISSN:1365-1609
1873-4545
DOI:10.1016/j.ijrmms.2018.06.017