Radiation-induced Alteration of Meta-chert 

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F22%3AN0000051" target="_blank" >RIV/26722445:_____/22:N0000051 - isvavai.cz</a>

Result on the web

<a href="https://www.jstage.jst.go.jp/article/jact/20/12/20_760/_article" target="_blank" >https://www.jstage.jst.go.jp/article/jact/20/12/20_760/_article</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3151/jact.20.760" target="_blank" >10.3151/jact.20.760</a>

Result language

angličtina

Original language name

Radiation-induced Alteration of Meta-chert 

Original language description

Concrete aggregate identified as “meta-chert” was irradiated with gamma-rays and neutrons. To identify the volume expansion of the aggregate under neutron irradiation, the following analyses were performed for pristine and irradiated α-quartz and meta-chert: X-ray diffraction (XRD)/Rietveld analysis, dimension change, water pycnometry, He-pycnometry, light optical microscopy (LOM), and scanning electron microscopy (SEM). From the difference of volume expansion observed from dimension change and water / helium pycnometry, the crack opening inside the aggregate subjected to irradiation was elucidated, and this was confirmed by LOM and SEM analysis. The crack contribution to the expansion of the aggregate was significant for neutron fluence > 6.99 × 1019 n/cm2, for E ≥ 0.01 MeV. Based on the XRD analysis, changes in lattice parameters were identified and the cell volume expansion was compared with the data by helium pycnometry. Based on the density change calculation and phase calculation data, the density of X-ray amorphous phase was consistent with that of expanded crystal α-quartz.

Czech name

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Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

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OECD FORD branch

20501 - Materials engineering

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

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

Name of the periodical

Journal of Advanced Concrete Technology

ISSN

1346-8014

e-ISSN

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Volume of the periodical

20

Issue of the periodical within the volume

12

Country of publishing house

JP - JAPAN

Number of pages

17

Pages from-to

760-776

UT code for WoS article

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EID of the result in the Scopus database

2-s2.0-85147494098