Laboratory observed data from the uniaxial compression tests on samples exposed to humidity variation
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Machine data from the uniaxial compression test on a Herrnholz granite cylinder exposed to ‘staged’ humidity variation (ZIP, 3.757Mb) Preview ContentHide Content
Machine data from the uniaxial compression test on a Herrnholz granite cylinder exposed to ‘continuous’ humidity variation (ZIP, 2.946Mb) Preview ContentHide Content
Machine data from the uniaxial compression test on an Aluminum cylinder exposed to ‘continuous’ humidity variation (ZIP, 721.4Kb) Preview ContentHide Content
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Creator
Date
2022Type
- Dataset
ETH Bibliography
yes
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Download
Machine data from the uniaxial compression test on a Herrnholz granite cylinder exposed to ‘staged’ humidity variation (ZIP, 3.757Mb) Preview ContentHide Content
Machine data from the uniaxial compression test on a Herrnholz granite cylinder exposed to ‘continuous’ humidity variation (ZIP, 2.946Mb) Preview ContentHide Content
Machine data from the uniaxial compression test on an Aluminum cylinder exposed to ‘continuous’ humidity variation (ZIP, 721.4Kb) Preview ContentHide Content
Abstract
In order to evaluate the effect of ambient humidity on both elasticity, and strains within an unweathered intact granite, we conducted two uniaxial compression tests on a Herrnholz granite cylinder exposed to ‘staged’ and ‘continuous’ humidity variation. A custom static loading frame with integrated climate chambers was used to conduct these experiments in the Rock Physics and Mechanics Lab at ETH. The system controls air temperature and humidity within a climate chamber, and allows us to monitor them throughout the duration of the test with humidity and temperature sensors insulated from the surrounding air. An Epsilon Model 3442RA1 averaging longitudinal extensometer, and Epsilon Model 3544 circumferential extensometer were used to track strains on the sample. In addition, we employed an EN AW-6082 T651 aluminium cylinder into the identical compression arrangement and testing protocol to our granite specimen, to characterize the response of the extensometers to temperature and humidity. Environmental conditions, extensometer-measured displacement, along with applied load, piston displacement, collected during these tests are included in this dataset. --> In order to evaluate the effect of ambient humidity on both elasticity, and strains within an unweathered intact granite, we conducted two uniaxial compression tests on a Herrnholz granite cylinder exposed to ‘staged’ and ‘continuous’ humidity variation. Uniaxial compression was varied through a series of load/unload/hold sequences, while we varied humidity between 20% and 90% in a stepwise manner with air temperature maintained at 55 °C. The resulting strains were measured using an Epsilon Model 3442RA1 averaging longitudinal extensometer, and Epsilon Model 3544 circumferential extensometer, both mechanically mounted on the specimen.
In order to evaluate the influence of ambient humidity on the extensometer signals, and to correct the observed (nominal) strains of granite specimen, a (reference) uniaxial compression test on an EN AW-6082 T651 aluminum cylinder (Ø 55 × 114 343 mm, diameter: length) exposed to continuous humidity variation between 20% and 90%, lasting 344 approximately 5 days, was performed.
This dataset presents all CSV files collected during the compression tests on both granite and aluminum specimens, including environmental conditions, extensometer-measured displacement, applied load, and piston displacement. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000523964Contributors
Contact person: Li, Ying
Producer: Li, Ying
Project leader: Loew, Simon
Project manager: Loew, Simon
Project member: Leith, Kerry
Related person: Perras, Matthew A.
Publisher
ETH ZurichSubject
Relative humidity; Uniaxial compression; Elastic modulusOrganisational unit
03465 - Löw, Simon (emeritus) / Löw, Simon (emeritus)
Funding
170746 - Long-term damage evolution in brittle rocks subject to controlled climatic conditions (SNF)
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ETH Bibliography
yes
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