Design and Production of Bentonite Pellet Mixtures II – Final Report

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F19%3A00347637" target="_blank" >RIV/68407700:21110/19:00347637 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Design and Production of Bentonite Pellet Mixtures II – Final Report

Original language description

The research work was closely linked to previous research conducted on pelletised calcium-magnesium bentonite extracted from the Černý vrch deposit. The main objective of the project was to attain a dry density for Černý vrch bentonite pellets of in excess of 2000 kg/m3. The report contains a detailed description of the project, which was divided into four main partial projects as specified in the Project Contract, namely the Testing of Pellets at the Pilot Scale, the Industrial Production of Pellets, the Compaction Testing of a Layer of the Developed Material and the Assessment of Hydraulic Conductivity and Swelling Pressure including the Project Assessment. The pilot and production testing were performed at the premises of the Keramost a.s. project subcontractor. The main objective of the project was attained, i.e. a bentonite pellet dry density of over 2000 kg/m3 (2 g/cm3). The result was verified by means of laboratory testing. Compaction tests were also conducted on an experimental layer: a layer of pelletised bentonite with a grain size of 0-8 mm exhibited compaction (dry density) of over 1.2 g/cm3 via the bentonite free fall method, whereas the use of a compaction piston resulted in the highest level of compaction for the 0-8 mm material, i.e. 1.55 g/cm3. The dry density value of the 0-50 mm pelletised bentonite was higher than that determined for the 0-8 mm grain size. With respect to the 0-50 mm material, the dry density following free fall compaction was determined at 1.26 g/cm3 for small volume samples (5 dm3) and 1.41 g/cm3 for larger volume samples of around 80 dm3. Relatively high dry densities of above 1.64 g/cm3 were attained via piston compaction for the larger samples...

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

20101 - Civil engineering

Project

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Continuities

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů