Factors affecting DEF and ASR in the concrete dam at Vrané nad Vltavou

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F14%3A10281232" target="_blank" >RIV/00216208:11310/14:10281232 - isvavai.cz</a>

Výsledek na webu

<a href="http://ijret.org/Volumes/V03/I25/IJRET_110325010.pdf" target="_blank" >http://ijret.org/Volumes/V03/I25/IJRET_110325010.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.15623/ijret.2014.0325010" target="_blank" >10.15623/ijret.2014.0325010</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Factors affecting DEF and ASR in the concrete dam at Vrané nad Vltavou

Popis výsledku v původním jazyce

Two degradation mechanisms, delayed ettringite formation (DEF) as well as the alkali-silica reaction (ASR), were investigated in the concrete dam at Vrané nad Vltavou, CZE with an aim to: (1) find those aggregates causing the degradation of the concrete;(2) define those parts of the concrete most affected by the degradation; and (3) correlate the water attack with the extent of degradation. The following methods were used: measurement of residual expansion of the concrete (following the CSN 72 1179 standard), optical microscopy, petrographic image analysis, and scanning electron microscopy combined with energy dispersive spectrometer (SEM/EDS). Eight different sampling points were selected according to the cracks observed on the concrete's surface. DEF was found to be the most important degradation mechanism in the concrete samples; ASR and calcite-rich rims are regarded as minor. Influence of freezing/thawing degradation is also possible. The highest residual expansion was measured o

Název v anglickém jazyce

Factors affecting DEF and ASR in the concrete dam at Vrané nad Vltavou

Popis výsledku anglicky

Two degradation mechanisms, delayed ettringite formation (DEF) as well as the alkali-silica reaction (ASR), were investigated in the concrete dam at Vrané nad Vltavou, CZE with an aim to: (1) find those aggregates causing the degradation of the concrete;(2) define those parts of the concrete most affected by the degradation; and (3) correlate the water attack with the extent of degradation. The following methods were used: measurement of residual expansion of the concrete (following the CSN 72 1179 standard), optical microscopy, petrographic image analysis, and scanning electron microscopy combined with energy dispersive spectrometer (SEM/EDS). Eight different sampling points were selected according to the cracks observed on the concrete's surface. DEF was found to be the most important degradation mechanism in the concrete samples; ASR and calcite-rich rims are regarded as minor. Influence of freezing/thawing degradation is also possible. The highest residual expansion was measured o

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JI - Kompositní materiály

OECD FORD obor

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Projekt

<a href="/cs/project/GAP104%2F12%2F0915" target="_blank" >GAP104/12/0915: Kvantitativní analýza deformačních struktur křemene ovlivňujících vznik ASR v betonu</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

International Journal of Research in Engineering and Technology

ISSN

2321-7308

e-ISSN

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Svazek periodika

3

Číslo periodika v rámci svazku

13

Stát vydavatele periodika

IN - Indická republika

Počet stran výsledku

6

Strana od-do

57-62

Kód UT WoS článku

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EID výsledku v databázi Scopus

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