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| rdf:type
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| Description
| - The construction of a deep geological repository for the storage of spent nuclear fuel will require the use of several hundred thousand tonnes of natural swelling clay (bentonite). This material possesses excellent swelling and self-healing abilities, high levels of plasticity and allows minimal hydraulic conductivity. The main function of the bentonite sealant will be to limit water transport around the canister containing spent fuel and thus prevent the eventual potential release of radionuclides into the biosphere. The highly compacted bentonite (buffer) around the canister will form one element of the multi-barrier sealing system in each of the individual deposition chambers. Compacted bentonite (backfill) will fill the access galleries following the closure of each section (a pre-determined number of deposition chambers) of the repository. The objective of the research being carried out at the Centre of Experimental Geotechnics is to develop technology for the application of backfill material using spraying. The procedure is based on sprayed concrete technology (shotcrete). The %22dry%22 application process, wherein dry bentonite is mixed with water inside the spraying nozzle, has been selected as the most feasible for this purpose. The main focus of the research is targeted at characterising the conditions in which bentonite can be sprayed successfully with respect to the required high level of dry density, the potential use of various types of bentonite, admixtures (added sand, gravel, etc.) and the conditions to be applied during the application procedure itself (amount of water, spraying pressure and so on). For obvious reasons, Czech bentonite is being used and experimental work includes the ongoing adjustment and testing of the various components of the spraying equipment.
- The construction of a deep geological repository for the storage of spent nuclear fuel will require the use of several hundred thousand tonnes of natural swelling clay (bentonite). This material possesses excellent swelling and self-healing abilities, high levels of plasticity and allows minimal hydraulic conductivity. The main function of the bentonite sealant will be to limit water transport around the canister containing spent fuel and thus prevent the eventual potential release of radionuclides into the biosphere. The highly compacted bentonite (buffer) around the canister will form one element of the multi-barrier sealing system in each of the individual deposition chambers. Compacted bentonite (backfill) will fill the access galleries following the closure of each section (a pre-determined number of deposition chambers) of the repository. The objective of the research being carried out at the Centre of Experimental Geotechnics is to develop technology for the application of backfill material using spraying. The procedure is based on sprayed concrete technology (shotcrete). The %22dry%22 application process, wherein dry bentonite is mixed with water inside the spraying nozzle, has been selected as the most feasible for this purpose. The main focus of the research is targeted at characterising the conditions in which bentonite can be sprayed successfully with respect to the required high level of dry density, the potential use of various types of bentonite, admixtures (added sand, gravel, etc.) and the conditions to be applied during the application procedure itself (amount of water, spraying pressure and so on). For obvious reasons, Czech bentonite is being used and experimental work includes the ongoing adjustment and testing of the various components of the spraying equipment. (en)
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| Title
| - Development of Sprayed Clay Technology
- Development of Sprayed Clay Technology (en)
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| skos:prefLabel
| - Development of Sprayed Clay Technology
- Development of Sprayed Clay Technology (en)
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| skos:notation
| - RIV/68407700:21110/11:00188324!RIV12-MSM-21110___
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/68407700:21110/11:00188324
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - bentonite; backfill; sprayed clay (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...in/vavai/riv/obor
| |
| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...UplatneniVysledku
| |
| http://linked.open...iv/tvurceVysledku
| - Hausmannová, Lucie
- Vašíček, Radek
- Šťástka, Jiří
|
| http://localhost/t...ganizacniJednotka
| |
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