HYGRIC PROPERTIES OF CONCRETE CASING FOR RADIOACTIVE WASTE DEPOSITION

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F18%3A00325819" target="_blank" >RIV/68407700:21110/18:00325819 - isvavai.cz</a>

Výsledek na webu

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

Jazyk výsledku

angličtina

Název v původním jazyce

HYGRIC PROPERTIES OF CONCRETE CASING FOR RADIOACTIVE WASTE DEPOSITION

Popis výsledku v původním jazyce

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 137Cs. 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.

Název v anglickém jazyce

HYGRIC PROPERTIES OF CONCRETE CASING FOR RADIOACTIVE WASTE DEPOSITION

Popis výsledku anglicky

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 137Cs. 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.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GA17-11635S" target="_blank" >GA17-11635S: Cementové kompozity k imobilizaci radionuklidů</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

18th International Multidisciplinary Scientific Geoconference SGEM 2018 - Nano, Bio, Green and Space - Technologies for a Sustainable Future

ISBN

978-619-7408-71-3

ISSN

1314-2704

e-ISSN

—

Počet stran výsledku

8

Strana od-do

3-10

Název nakladatele

STEF92 Technology Ltd.

Místo vydání

Sofia

Místo konání akce

Vídeň

Datum konání akce

3. 12. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—