About: Numerical Simulation of the Detection of Cracks in Reinforced Concrete Structures of NPP Due to Expansion of Reinforcing Corrosive Products Using Impact-Echo Method     Goto   Sponge   NotDistinct   Permalink

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Description
  • Stávající jaderné elektrárny musejí pro pravidelné obnovování provozní licence prokazovat svoji bezpečnost. Ta může být významně ovlivněna vadami velkého množství stárnoucích betonových konstrukcí. Moderní metoda Impact-Echo se zdá být nadějná jako jedna z metod provozních prohlídek takových konstrukcí. Článek je pokračováním rozsáhlého projektu zabývajícího se použitím metody Impact-Echo. Popisuje metodu a hlavní výsledky numerického modelování detekce a lokalizace trhlin způsobených expanzí korozních produktů. Ocelové armování podléhá korozi způsobené difundujícími korozními činiteli. Produkty koroze mají až 7x větší objem než původní ocel. Vzniklé napětí může vést k poškození betonu a rozvoji trhlin. Zjišťujeme, zda lze metodou Impact-Echo detekovat rostoucí vady včas. Numerických předpovědí bude experimentálně ověřovat Stavební fakulta v Brně (cs)
  • Current nuclear power plants (NPP) are duty to certify their security for regular renewal of their operating licenses.NPP security can be significantly affected by defects of large amount of ageing reinforced concrete structures.Advanced Impact-Echo method seams to be very hopeful to cooperate at performing in-service inspections such structures. This paper continues of extensive project dealing with Impact-Echo method application.It presents a method description and main results of numerical modeling of detection and localization of crack caused by corrosive product expansion.Steel reinforcing rods are subjected to corrosion due to diffusion of corrosive agents.Corrosive products have up to 7-times larger volume than pure steel.Raised strain can lead up to concrete failure and crack development.We investigate whether it is possible to detect these growing cracks by Impact-Echo method in time.Experimental verification of our numerical predictions is prepared on Civil Faculty in Brno
  • Current nuclear power plants (NPP) are duty to certify their security for regular renewal of their operating licenses.NPP security can be significantly affected by defects of large amount of ageing reinforced concrete structures.Advanced Impact-Echo method seams to be very hopeful to cooperate at performing in-service inspections such structures. This paper continues of extensive project dealing with Impact-Echo method application.It presents a method description and main results of numerical modeling of detection and localization of crack caused by corrosive product expansion.Steel reinforcing rods are subjected to corrosion due to diffusion of corrosive agents.Corrosive products have up to 7-times larger volume than pure steel.Raised strain can lead up to concrete failure and crack development.We investigate whether it is possible to detect these growing cracks by Impact-Echo method in time.Experimental verification of our numerical predictions is prepared on Civil Faculty in Brno (en)
Title
  • Numerical Simulation of the Detection of Cracks in Reinforced Concrete Structures of NPP Due to Expansion of Reinforcing Corrosive Products Using Impact-Echo Method
  • Numerical Simulation of the Detection of Cracks in Reinforced Concrete Structures of NPP Due to Expansion of Reinforcing Corrosive Products Using Impact-Echo Method (en)
  • Numerické simulace detekce trhlin armovaných betonových konstrukcí JE způsobených expanzí korozních produktů armování použitím metody Impact-Echo (cs)
skos:prefLabel
  • Numerical Simulation of the Detection of Cracks in Reinforced Concrete Structures of NPP Due to Expansion of Reinforcing Corrosive Products Using Impact-Echo Method
  • Numerical Simulation of the Detection of Cracks in Reinforced Concrete Structures of NPP Due to Expansion of Reinforcing Corrosive Products Using Impact-Echo Method (en)
  • Numerické simulace detekce trhlin armovaných betonových konstrukcí JE způsobených expanzí korozních produktů armování použitím metody Impact-Echo (cs)
skos:notation
  • RIV/49777513:23640/08:00501118!RIV09-GA0-23640___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(GA103/06/0891)
http://linked.open...iv/cisloPeriodika
  • 2
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 383526
http://linked.open...ai/riv/idVysledku
  • RIV/49777513:23640/08:00501118
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • concrete structures; reinforcing; Impact-Echo; diagnostics; wave propagation; numerical simulation; crack; flaw; corrosion (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • CZ - Česká republika
http://linked.open...ontrolniKodProRIV
  • [7CC758DB8210]
http://linked.open...i/riv/nazevZdroje
  • Applied and Computational Mechanics 2008
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 2008
http://linked.open...iv/tvurceVysledku
  • Morávka, Štefan
issn
  • 1802-680X
number of pages
http://localhost/t...ganizacniJednotka
  • 23640
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