Wyznaczanie współczynników dyfuzji chlorków w materiałach cementowych – Przegląd metod eksperymentalnych i modelowania: Część II – Metody Migracyjne

Jasielec, J. J.; Szyszkiewicz, K.; Królikowska, A.; Filipek, R.

Artykuł - szczegóły

Tytuł artykułu

Wyznaczanie współczynników dyfuzji chlorków w materiałach cementowych – Przegląd metod eksperymentalnych i modelowania: Część II – Metody Migracyjne

Autorzy

Jasielec J. J. , Szyszkiewicz K. , Królikowska A. , Filipek R.

Wybrane pełne teksty z tego czasopisma

http://www.cementwapnobeton.pl/

Identyfikatory

Warianty tytułu

Determination of Chloride Diffusion Coefficient in Cement-Based Materials – A Review of Experimental and Modeling Methods: Part II – Migration Methods

Języki publikacji

PL EN

Abstrakty

Korozja stalowych elementów zbrojenia stanowi poważny problemem dla trwałości i bezpieczeństwa konstrukcji żelbetowych. Jednym z najbardziej agresywnych chemicznych składników powodujących korozję zbrojenia są jony chlorkowe działające poprzez ogólny mechanizm depasywacji powierzchni zbrojenia. Jony chlorkowe dyfundują w roztworze w porach betonu docierając do zbrojenia, dlatego znajomość współczynnika dyfuzji chlorków w betonie jest niezwykle ważna. Ten artykuł jest drugim z serii trzech prac, których celem jest przegląd metod doświadczalnych i modeli teoretycznych stosowanych do wyznaczania współczynników dyfuzji chlorków w materiałach cementowych. W tej części omówione zostały metody migracyjne, których głównym atutem w porównaniu do metod dyfuzyjnych jest skrócenie czasu eksperymentu niezbędnego do obliczenia współczynników dyfuzji.

The corrosion of steel reinforcement (rebars) in concrete structures is a severe durability and safety problem. One of the most aggressive chemical species which induces such corrosion is the chloride ion via the general mechanism of depassivation of the rebar surface. Chloride ions can diffuse through the solution of pore system in concrete to reach the rebar, thus the assessment of the diffusion coefficient of chloride in concrete is of paramount importance. This paper is the second part of a series of three papers which are meant to provide an overview of experimental methods and theoretical models which are used to predict a concrete materials resistivity to chloride ingress. Part 2 deals with migration methods which major attribute is shortening of experimental time necessary to determine diffusion coefficients.

Słowa kluczowe

materiał na bazie cementu chlorki współczynnik dyfuzji badanie doświadczalne modelowanie metoda migracyjna migracja stacjonarna migracja niestacjonarna

cement based material chlorides diffusion coefficient experimental investigation modelling migration method stationary migration non-stationary migration

Wydawca

Fundacja Cement, Wapno, Beton

Czasopismo

Cement Wapno Beton

Rocznik

2017

Tom

R. 22/84, nr 2

Strony

154--167

Opis fizyczny

Bibliogr. 57 poz., il.

Twórcy

autor

Jasielec J. J.

Wydział Inżynierii Materiałowej i Ceramiki, Akademia Górniczo-Hutnicza, Kraków

autor

Szyszkiewicz K.

Wydział Inżynierii Materiałowej i Ceramiki, Akademia Górniczo-Hutnicza, Kraków

autor

Królikowska A.

Instytut Badawczy Dróg i Mostów, Warszawa

autor

Filipek R.

rof@agh.edu.pl

Wydział Inżynierii Materiałowej i Ceramiki, Akademia Górniczo-Hutnicza, Kraków

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).

Typ dokumentu

Bibliografia

Identyfikator YADDA

bwmeta1.element.baztech-736af700-4ab3-473f-8d9c-056c8fd86854