Water Absorption Test Accompanied by Dynamic Neutron Radiography of Gamma-irradiated Cement Samples

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F19%3A00333673" target="_blank" >RIV/68407700:21110/19:00333673 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Water Absorption Test Accompanied by Dynamic Neutron Radiography of Gamma-irradiated Cement Samples

Popis výsledku v původním jazyce

This study is focused on the experimental investigation of the effect of early-age gamma-ray irradiation on the permeability of cement samples. Five samples set were manufactured and irradiated at early age. The hydration process was stopped using acetone in the sample age of 15 hours. The effect of gamma-ray irradiation on cement samples permeability was investigated with the help of water absorption test accompanied by dynamic neutron radiography imaging. The calibration of water thickness was performed on wedge-shaped phantom sample. The fitted calibration function was used for quantification of absorbed water content in the investigated cement samples. The calculated values have good correlation with the measured values. From the calculated water distribution curves over the sample height it can be seen that water penetrates in the irradiated more than 8 hours sample slightly faster and deeper with comparison to the not irradiated sample, however the maximum water content is somewhat lower, these can be an indirect evidence of lower porosity of irradiated sample and consequently higher pore pressure due to reduction of pore diameter.

Název v anglickém jazyce

Water Absorption Test Accompanied by Dynamic Neutron Radiography of Gamma-irradiated Cement Samples

Popis výsledku anglicky

This study is focused on the experimental investigation of the effect of early-age gamma-ray irradiation on the permeability of cement samples. Five samples set were manufactured and irradiated at early age. The hydration process was stopped using acetone in the sample age of 15 hours. The effect of gamma-ray irradiation on cement samples permeability was investigated with the help of water absorption test accompanied by dynamic neutron radiography imaging. The calibration of water thickness was performed on wedge-shaped phantom sample. The fitted calibration function was used for quantification of absorbed water content in the investigated cement samples. The calculated values have good correlation with the measured values. From the calculated water distribution curves over the sample height it can be seen that water penetrates in the irradiated more than 8 hours sample slightly faster and deeper with comparison to the not irradiated sample, however the maximum water content is somewhat lower, these can be an indirect evidence of lower porosity of irradiated sample and consequently higher pore pressure due to reduction of pore diameter.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/8F17002" target="_blank" >8F17002: Efekt chemické sloučeniny betonu a jeho chování v dlouhodobém radioaktivním prostředí</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

BRITTLE MATRIX COMPOSITES 12

ISBN

978-83-65550-21-7

ISSN

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e-ISSN

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Počet stran výsledku

11

Strana od-do

211-221

Název nakladatele

Polish Academy of Science, Institute of Fundamental Technological Research

Místo vydání

Warszawa

Místo konání akce

Warsaw

Datum konání akce

23. 9. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000508009200022