ACCELERATED CHLORIDE MIGRATION TESTS IN CONCRETE

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F16%3A00301623" target="_blank" >RIV/68407700:21110/16:00301623 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

ACCELERATED CHLORIDE MIGRATION TESTS IN CONCRETE

Original language description

Accelerated chloride migration tests are performed on cylindrical samples made of Portland cement concrete. Low voltage electric field is applied as a driving force for both chloride accelerated penetration and extraction. It is verified that the chloride concentration profile measured in samples after 48 hours of electromigration approximately corresponds to the chloride profile after six months of natural diffusion. Potential and effectiveness of the chloride extraction process for the rehabilitation of concrete in terms of lowering the chloride concentration using the DC current is discussed. Experiments show up to 50% decrease in chloride concentration in concrete after 48 hours of extraction driven by electric field with the reverse polarity. Simulation of the process is provided using analytical and numerical solutions of partial differential equations with a simplification in form of the constant diffusion coefficient.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

JN - Civil engineering

OECD FORD branch

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Project

<a href="/en/project/GA16-11879S" target="_blank" >GA16-11879S: Rehabilitation of Reinforced Concrete Structures by Simultaneous Chloride Removal and Nanoparticle Injection</a><br>

Continuities

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

Publication year

2016

Confidentiality

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

Article name in the collection

Engineering Mechanics 2016 - Book of full texts

ISBN

978-80-87012-59-8

ISSN

1805-8248

e-ISSN

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Number of pages

4

Pages from-to

1-4

Publisher name

Institute of Thermomechanics, AS CR, v.v.i.

Place of publication

Prague

Event location

Svratka

Event date

May 9, 2016

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000379986700045