Application of the nanoindentation technique for the characterization of varved clay

Nanoindentation is a test carried out in a small scale, during which a rigid indenter (of known hardness and geometry) is pressed into the tested material. The results of the test are the load and unload curves, from which the harerial characterized by high heterogeneity (like soil – composed of gra...

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Main Author: Tankiewicz Matylda
Format: Article
Language:English
Published: De Gruyter 2018-12-01
Series:Open Geosciences
Subjects:
Online Access:https://doi.org/10.1515/geo-2018-0071
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author Tankiewicz Matylda
author_facet Tankiewicz Matylda
author_sort Tankiewicz Matylda
collection DOAJ
description Nanoindentation is a test carried out in a small scale, during which a rigid indenter (of known hardness and geometry) is pressed into the tested material. The results of the test are the load and unload curves, from which the harerial characterized by high heterogeneity (like soil – composed of grains and particles of different size and mineral composition), the use of multiple nanoindentation on a predefined grid (Grid Indentation Technique) is reasonable. It allows for the determination of the morphology of the material in a selected scale of observation. In the study, nanoindetation tests were performed on samples of varved clay - soil composed of two alternately arranged layers - occurring near the city of Bełchatów in central Poland. Due to the layered structure of the material, the tests were carried out for both layers separately. The outcomes show that there are significant differences in the values of their mechanical properties. Application of the deconvolution technique also allowed for the estimation of the number of components of both layers and their mechanical properties.
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spelling doaj.art-e005b0ed9d2f487cadc396fef7e9ea9a2022-12-21T21:29:26ZengDe GruyterOpen Geosciences2391-54472018-12-0110190291010.1515/geo-2018-0071geo-2018-0071Application of the nanoindentation technique for the characterization of varved clayTankiewicz Matylda0Department of Civil Engineering, Wroclaw University of Science and Technology, Wroclaw, 50-370, Wybrzeże Wyspiańskiego 27, Wroclaw, PolandNanoindentation is a test carried out in a small scale, during which a rigid indenter (of known hardness and geometry) is pressed into the tested material. The results of the test are the load and unload curves, from which the harerial characterized by high heterogeneity (like soil – composed of grains and particles of different size and mineral composition), the use of multiple nanoindentation on a predefined grid (Grid Indentation Technique) is reasonable. It allows for the determination of the morphology of the material in a selected scale of observation. In the study, nanoindetation tests were performed on samples of varved clay - soil composed of two alternately arranged layers - occurring near the city of Bełchatów in central Poland. Due to the layered structure of the material, the tests were carried out for both layers separately. The outcomes show that there are significant differences in the values of their mechanical properties. Application of the deconvolution technique also allowed for the estimation of the number of components of both layers and their mechanical properties.https://doi.org/10.1515/geo-2018-0071nanoindentationhardnesselastic modulusmorphology, gitdeconvolutionvarved clay
spellingShingle Tankiewicz Matylda
Application of the nanoindentation technique for the characterization of varved clay
Open Geosciences
nanoindentation
hardness
elastic modulus
morphology, git
deconvolution
varved clay
title Application of the nanoindentation technique for the characterization of varved clay
title_full Application of the nanoindentation technique for the characterization of varved clay
title_fullStr Application of the nanoindentation technique for the characterization of varved clay
title_full_unstemmed Application of the nanoindentation technique for the characterization of varved clay
title_short Application of the nanoindentation technique for the characterization of varved clay
title_sort application of the nanoindentation technique for the characterization of varved clay
topic nanoindentation
hardness
elastic modulus
morphology, git
deconvolution
varved clay
url https://doi.org/10.1515/geo-2018-0071
work_keys_str_mv AT tankiewiczmatylda applicationofthenanoindentationtechniqueforthecharacterizationofvarvedclay