Suitability of Engineering-Geological Environment on the Basis of Its Permeability Coefficient: Four Case Studies of Fine-Grained Soils

The aim of the article is to compare two classifications systems of engineering-geological environment sustainability in terms of its permeability evaluated on the basis of permeability coefficient. The first evaluated classification assumes a permeable environment to be a positive characteristic in...

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Autores principales:	Marian Marschalko, Zofia Zięba, Dominik Niemiec, David Neuman, Jakub Mońka, Jolanta Dąbrowska
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	engineering geology soil permeability fine-grained soils soil microstructure methods of permeability coefficient determination scanning electron microscope technique Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/1237c979182d44508f5abb87d852cf4a
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spelling	oai:doaj.org-article:1237c979182d44508f5abb87d852cf4a2021-11-11T17:59:19ZSuitability of Engineering-Geological Environment on the Basis of Its Permeability Coefficient: Four Case Studies of Fine-Grained Soils10.3390/ma142164111996-1944https://doaj.org/article/1237c979182d44508f5abb87d852cf4a2021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6411https://doaj.org/toc/1996-1944The aim of the article is to compare two classifications systems of engineering-geological environment sustainability in terms of its permeability evaluated on the basis of permeability coefficient. The first evaluated classification assumes a permeable environment to be a positive characteristic in the engineering-geological assessment, while the other considers an impermeable environment as favourable. The four fine-grained soil materials were selected, as they had very similar, almost identical grains-size distribution, but different microstructure characterized by grains sphericity, angularity, and roughness. At the same time, the influence of changes in the density of soil materials (density index 10%, 30%, 60%, 90%) was analysed. Permeability coefficient was determined using six methods (empirical formulae, laboratory and microscopic analysis). The laboratory method falling head test (FHT) was taken as a reference test that reflected the actual water flow through the soil. It was found that with an increase in grain angularity and roughness (and a decrease in sphericity), the permeability coefficient was decreasing and this trend culminated along with gradual compaction. Moreover, the research shows that unsuitable methods may classify soil materials into wrong engineering-geological permeability classes, which may have negative consequences during engineering-geological or geotechnical assessment and cause subsequent problems in foundation engineering.Marian MarschalkoZofia ZiębaDominik NiemiecDavid NeumanJakub MońkaJolanta DąbrowskaMDPI AGarticleengineering geologysoil permeabilityfine-grained soilssoil microstructuremethods of permeability coefficient determinationscanning electron microscope techniqueTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6411, p 6411 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	engineering geology soil permeability fine-grained soils soil microstructure methods of permeability coefficient determination scanning electron microscope technique Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	engineering geology soil permeability fine-grained soils soil microstructure methods of permeability coefficient determination scanning electron microscope technique Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Marian Marschalko Zofia Zięba Dominik Niemiec David Neuman Jakub Mońka Jolanta Dąbrowska Suitability of Engineering-Geological Environment on the Basis of Its Permeability Coefficient: Four Case Studies of Fine-Grained Soils
description	The aim of the article is to compare two classifications systems of engineering-geological environment sustainability in terms of its permeability evaluated on the basis of permeability coefficient. The first evaluated classification assumes a permeable environment to be a positive characteristic in the engineering-geological assessment, while the other considers an impermeable environment as favourable. The four fine-grained soil materials were selected, as they had very similar, almost identical grains-size distribution, but different microstructure characterized by grains sphericity, angularity, and roughness. At the same time, the influence of changes in the density of soil materials (density index 10%, 30%, 60%, 90%) was analysed. Permeability coefficient was determined using six methods (empirical formulae, laboratory and microscopic analysis). The laboratory method falling head test (FHT) was taken as a reference test that reflected the actual water flow through the soil. It was found that with an increase in grain angularity and roughness (and a decrease in sphericity), the permeability coefficient was decreasing and this trend culminated along with gradual compaction. Moreover, the research shows that unsuitable methods may classify soil materials into wrong engineering-geological permeability classes, which may have negative consequences during engineering-geological or geotechnical assessment and cause subsequent problems in foundation engineering.
format	article
author	Marian Marschalko Zofia Zięba Dominik Niemiec David Neuman Jakub Mońka Jolanta Dąbrowska
author_facet	Marian Marschalko Zofia Zięba Dominik Niemiec David Neuman Jakub Mońka Jolanta Dąbrowska
author_sort	Marian Marschalko
title	Suitability of Engineering-Geological Environment on the Basis of Its Permeability Coefficient: Four Case Studies of Fine-Grained Soils
title_short	Suitability of Engineering-Geological Environment on the Basis of Its Permeability Coefficient: Four Case Studies of Fine-Grained Soils
title_full	Suitability of Engineering-Geological Environment on the Basis of Its Permeability Coefficient: Four Case Studies of Fine-Grained Soils
title_fullStr	Suitability of Engineering-Geological Environment on the Basis of Its Permeability Coefficient: Four Case Studies of Fine-Grained Soils
title_full_unstemmed	Suitability of Engineering-Geological Environment on the Basis of Its Permeability Coefficient: Four Case Studies of Fine-Grained Soils
title_sort	suitability of engineering-geological environment on the basis of its permeability coefficient: four case studies of fine-grained soils
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/1237c979182d44508f5abb87d852cf4a
work_keys_str_mv	AT marianmarschalko suitabilityofengineeringgeologicalenvironmentonthebasisofitspermeabilitycoefficientfourcasestudiesoffinegrainedsoils AT zofiazieba suitabilityofengineeringgeologicalenvironmentonthebasisofitspermeabilitycoefficientfourcasestudiesoffinegrainedsoils AT dominikniemiec suitabilityofengineeringgeologicalenvironmentonthebasisofitspermeabilitycoefficientfourcasestudiesoffinegrainedsoils AT davidneuman suitabilityofengineeringgeologicalenvironmentonthebasisofitspermeabilitycoefficientfourcasestudiesoffinegrainedsoils AT jakubmonka suitabilityofengineeringgeologicalenvironmentonthebasisofitspermeabilitycoefficientfourcasestudiesoffinegrainedsoils AT jolantadabrowska suitabilityofengineeringgeologicalenvironmentonthebasisofitspermeabilitycoefficientfourcasestudiesoffinegrainedsoils
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Suitability of Engineering-Geological Environment on the Basis of Its Permeability Coefficient: Four Case Studies of Fine-Grained Soils

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