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Description
  • O trvanlivosti betonu rozhoduje stav povrchové vrstvy. Rychlost průniku agres. plynů nebo vody závisí na její struktuře. Stav struktury lze popsat zkouškou její propustnosti a NDT elektroakustickými metodami. Výsledky prací budou zpracovány pro Doporučení ke zvýšení ochrany ŽB a PB konstrukcí.
  • Problems of the relation between concrete durability and life cycle of the structures are topical at present. Durability of concrete is limited by its quality, especially by a state of its surface layer. This layer is a point of entry for penetrating environmental effects via concrete to reinforcement. Cracks origin in a porous structure of concrete even in early stage of setting and hardening, subsequent cracks develop in the stage of maturation and substantial ones develop in the course of operation of a structure together with the of temperature changes effects. The very problem is an absence of objective testing methods that would detect the faults in concrete. Development of non-destructive electro-acoustic diagnostic method in the last years made great progress and so it is possible to localize non-homogeneity or cracks in concrete using either ultrasonic or resonance method. These methods can be combined with the ones describing a state of porous structure of covercrete. One of these methods is a method of air permeability. Based on experimental tests either on samples or cores carried out in a laboratory and in situ, a recommendation for protection improvement both of RC and prestressed structures will be elaborated. The recommendation will serve for a design of %22Recommendation for protection improvement of both RC and prestressed structures%22. This recommendation is appointed for the designers and contractors at realisation of the engineering works. (en)
Title
  • Elimination of crack formation and development in concrete bridges (en)
  • Omezení vzniku a rozvoje trhlin v betonových mostech
skos:notation
  • GA103/09/0065
http://linked.open...avai/cep/aktivita
http://linked.open...kovaStatniPodpora
http://linked.open...ep/celkoveNaklady
http://linked.open...datumDodatniDoRIV
http://linked.open...i/cep/druhSouteze
http://linked.open...ep/duvernostUdaju
http://linked.open.../cep/fazeProjektu
http://linked.open...ai/cep/hlavniObor
http://linked.open...hodnoceniProjektu
http://linked.open...vai/cep/kategorie
http://linked.open.../cep/klicovaSlova
  • betonové mosty, vznik trhlin, rozvoj trhlin v čerstvém betonu (en)
http://linked.open...ep/partnetrHlavni
http://linked.open...inujicichPrijemcu
http://linked.open...cep/pocetPrijemcu
http://linked.open...ocetSpoluPrijemcu
http://linked.open.../pocetVysledkuRIV
http://linked.open...enychVysledkuVRIV
http://linked.open...lneniVMinulemRoce
http://linked.open.../prideleniPodpory
http://linked.open...iciPoslednihoRoku
http://linked.open...atUdajeProjZameru
http://linked.open.../vavai/cep/soutez
http://linked.open...usZobrazovaneFaze
http://linked.open...ai/cep/typPojektu
http://linked.open...ep/ukonceniReseni
http://linked.open.../cep/vedlejsiObor
http://linked.open...ep/zahajeniReseni
http://linked.open...jektu+dodavatelem
  • The project gone according to plan both in terms of expertise and in terms of disbursement of funds. (en)
  • Řešení projektu proběhlo podle plánu jak z hlediska odborného tak i z hlediska čerpání finančních prostředků. (cs)
http://linked.open...tniCyklusProjektu
http://linked.open.../cep/klicoveSlovo
  • vznik trhlin
  • betonové mosty
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