Hygric properties of concrete casing for radioactive waste deposition

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F18%3A00503695" target="_blank" >RIV/61388980:_____/18:00503695 - isvavai.cz</a>

Result on the web

<a href="https://www.sgem.org/index.php/elibrary?view=publication&task=show&id=2143" target="_blank" >https://www.sgem.org/index.php/elibrary?view=publication&task=show&id=2143</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5593/sgem2018V/4.3/S04.001" target="_blank" >10.5593/sgem2018V/4.3/S04.001</a>

Result language

angličtina

Original language name

Hygric properties of concrete casing for radioactive waste deposition

Original language description

This paper presents the results of an experimental study of concrete designed as a secondary barrier for radioactive waste deposition. Sorption materials, such as natural zeolite, have very good encapsulation ability to certain ions, which can be harmful for the environment, such as 137 Cs. Incorporation of natural zeolite into concrete may increase the protection ability of secondary barriers against radionuclide release. Determination of water-transport-and water vapour transport properties of such concrete can present an important indicator of concrete quality, in particular in the link to its basic physical properties. In this study, concrete mixtures containing various amounts of natural zeolite (clinoptilolite) were prepared. For the reference mixture, there was only cement used as a binder. In the other mixtures, 10% of natural zeolite was added to take part in the hydration due to its pozzolanity. The excess amount of natural zeolite played as an inert filler with sorption properties. The experimental results show an increasing trend of the open porosity with the addition of natural zeolite, which can also be seen on a gradual decrease of both, bulk and matrix density. Consequently, both water transport and water vapour transport are enhanced with the increasing amount of natural zeolite in the concrete mixture.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10402 - Inorganic and nuclear chemistry

Project

<a href="/en/project/GA17-11635S" target="_blank" >GA17-11635S: Cement composite for radionuclide encasement</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

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

Article name in the collection

18th International Multidisciplinary Scientific GeoConference SGEM 2018

ISBN

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ISSN

1314-2704

e-ISSN

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Number of pages

8

Pages from-to

"Roč. 18"

Publisher name

STEF92 Technology

Place of publication

Sofia

Event location

Vienna

Event date

Dec 3, 2018

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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