Temat: swelling index - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Improving the Quality of Clay Powders by Mechanoactivation
Autorzy:: Bogoslavets, Volodymyr
Voloshyn, Yurii
Hrytsulyak, Halyna
Yurych, Lidiia
Powiązania:: https://bibliotekanauki.pl/articles/2202297.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: clay
bentonite
swelling index
cation exchange capacity
drilling fluid
rheology
Opis:: The ability to effectively use mineral resources is the key to the sustainable development of industry in modern conditions of environmental protection. High-quality bentonites are rarely found in nature, so technologies for improving the quality of clay powders are quite relevant today. The article considers the possibility of improving the quality of clays obtained from candidate quarries for the purpose of further use as components of drilling fluids. The filtration and rheological characteristics of drilling fluids obtained on the basis of activated clay powder were also investigated by Benta Limited Liability Company.
Źródło:: Journal of Ecological Engineering; 2022, 23, 12; 145--154
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Determination of swell index and swelling pressure from suction tests : a case study of Neogene clays from Warsaw (Poland)
Autorzy:: Wójcik, E.
Gawriuczenkow, I.
Powiązania:: https://bibliotekanauki.pl/articles/2060572.pdf
Data publikacji:: 2017
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: expansive soils
swell index
swelling pressure
soil suction
neogene clays
Opis:: The paper presents the results of swell index, swelling pressure and soil suction tests carried out on Neogene clays from Warsaw, depending on the water content, clay fraction, liquid limit, plasticity index, cation exchange capacity, and content of clay minerals and beidellite. These clays are considered expansive soils in Poland, as they are vulnerable to water content variations in the active zone, which result in their volume change and, in consequence, cause damage of foundations and other construction elements. A number of physical, chemical and mineral properties were determined for these clays. The swelling tests were carried out on samples precompacted in Proctor apparatus, at various initial values of water content. The analyses have shown exponential relation of swell index, swelling pressure and suction versus water content. In addition, the investigated relationship between the suction and swell characteristics of tested clays shows good correlation as a power function between these parameters. In addition, validity of correlations between fitting parameters of obtained relationships and soil index properties, such as clay fraction, liquid limit, plasticity index, cation exchange capacity, and content of clay minerals and beidellite, have been demonstrated. The empirical relations are characterized by high values of the correlation coefficient. A very high fit has also been found for a proposed relationship between the swell index and swelling pressure for tested clays.
Źródło:: Geological Quarterly; 2017, 61, 4; 738--750
1641-7291
Pojawia się w:: Geological Quarterly
Dostawca treści:: Biblioteka Nauki

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