Compressive strength and thermal properties of sand–bentonite mixture

Sand–bentonite mixtures are used in road embankments as a protective material for protecting underground high-voltage cables and utility pipelines supplying water and gas etc. The sand–bentonite mixtures provide benefits while laying high-voltage cables. The purpose of this study is to determine the...

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Autores principales:	Zakarka Mindaugas, Skuodis Šarūnas, Šiupšinskas Giedrius, Bielskus Juozas
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	sand–bentonite mixture compressive strength thermal properties uniaxial compression thermal conductivity bentonite thermal resistivity Geology QE1-996.5
Acceso en línea:	https://doaj.org/article/a108c320b9bd4c02852ff621619d73d1
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spelling	oai:doaj.org-article:a108c320b9bd4c02852ff621619d73d12021-12-05T14:10:49ZCompressive strength and thermal properties of sand–bentonite mixture2391-544710.1515/geo-2020-0289https://doaj.org/article/a108c320b9bd4c02852ff621619d73d12021-08-01T00:00:00Zhttps://doi.org/10.1515/geo-2020-0289https://doaj.org/toc/2391-5447Sand–bentonite mixtures are used in road embankments as a protective material for protecting underground high-voltage cables and utility pipelines supplying water and gas etc. The sand–bentonite mixtures provide benefits while laying high-voltage cables. The purpose of this study is to determine the proportions as well as mechanical and thermal properties of a dry-mixed sand–bentonite mixture and to investigate the suitability of such mixtures for installation around high-voltage underground power lines in road embankments. When selecting a sand–bentonite mixture, the following requirements must be ensured: the compressive strength must be greater than 0.5 MPa after 24 h; the thermal resistivity must be greater than 1.2 K m/W (thermal conductivity 0,833 W/(K m)); and the moisture content of the sand–bentonite mixture must be less than 13%. The following materials were used when selecting the bentonite mixture: bentonite, 0–4.0 mm fraction sand, cement (CEM I 42.5R), and water. In this study, six groups of samples were formed, in which the parts of concrete, sand, cement, and water were added in different proportions. The strength and thermal conductivity of the samples were analyzed. Studies about the use of bentonite around high-voltage cables have revealed the need for wet mixing of bentonite suspensions. The required thermal conductivity properties of the soil were not achieved by dry mixing. This method of mixing can be useful only in cases when the thermal conductivity of the mixed soil is not relevant, because the work can be continued after a day.Zakarka MindaugasSkuodis ŠarūnasŠiupšinskas GiedriusBielskus JuozasDe Gruyterarticlesand–bentonite mixturecompressive strengththermal propertiesuniaxial compressionthermal conductivitybentonitethermal resistivityGeologyQE1-996.5ENOpen Geosciences, Vol 13, Iss 1, Pp 988-998 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	sand–bentonite mixture compressive strength thermal properties uniaxial compression thermal conductivity bentonite thermal resistivity Geology QE1-996.5
spellingShingle	sand–bentonite mixture compressive strength thermal properties uniaxial compression thermal conductivity bentonite thermal resistivity Geology QE1-996.5 Zakarka Mindaugas Skuodis Šarūnas Šiupšinskas Giedrius Bielskus Juozas Compressive strength and thermal properties of sand–bentonite mixture
description	Sand–bentonite mixtures are used in road embankments as a protective material for protecting underground high-voltage cables and utility pipelines supplying water and gas etc. The sand–bentonite mixtures provide benefits while laying high-voltage cables. The purpose of this study is to determine the proportions as well as mechanical and thermal properties of a dry-mixed sand–bentonite mixture and to investigate the suitability of such mixtures for installation around high-voltage underground power lines in road embankments. When selecting a sand–bentonite mixture, the following requirements must be ensured: the compressive strength must be greater than 0.5 MPa after 24 h; the thermal resistivity must be greater than 1.2 K m/W (thermal conductivity 0,833 W/(K m)); and the moisture content of the sand–bentonite mixture must be less than 13%. The following materials were used when selecting the bentonite mixture: bentonite, 0–4.0 mm fraction sand, cement (CEM I 42.5R), and water. In this study, six groups of samples were formed, in which the parts of concrete, sand, cement, and water were added in different proportions. The strength and thermal conductivity of the samples were analyzed. Studies about the use of bentonite around high-voltage cables have revealed the need for wet mixing of bentonite suspensions. The required thermal conductivity properties of the soil were not achieved by dry mixing. This method of mixing can be useful only in cases when the thermal conductivity of the mixed soil is not relevant, because the work can be continued after a day.
format	article
author	Zakarka Mindaugas Skuodis Šarūnas Šiupšinskas Giedrius Bielskus Juozas
author_facet	Zakarka Mindaugas Skuodis Šarūnas Šiupšinskas Giedrius Bielskus Juozas
author_sort	Zakarka Mindaugas
title	Compressive strength and thermal properties of sand–bentonite mixture
title_short	Compressive strength and thermal properties of sand–bentonite mixture
title_full	Compressive strength and thermal properties of sand–bentonite mixture
title_fullStr	Compressive strength and thermal properties of sand–bentonite mixture
title_full_unstemmed	Compressive strength and thermal properties of sand–bentonite mixture
title_sort	compressive strength and thermal properties of sand–bentonite mixture
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/a108c320b9bd4c02852ff621619d73d1
work_keys_str_mv	AT zakarkamindaugas compressivestrengthandthermalpropertiesofsandbentonitemixture AT skuodissarunas compressivestrengthandthermalpropertiesofsandbentonitemixture AT siupsinskasgiedrius compressivestrengthandthermalpropertiesofsandbentonitemixture AT bielskusjuozas compressivestrengthandthermalpropertiesofsandbentonitemixture
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Compressive strength and thermal properties of sand–bentonite mixture

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