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STEHLÍK, M. KNAPOVÁ, J. HEŘMÁNKOVÁ, V.
Original Title
Permeation and diffusion tests for estimation of durability of fibreconcretes with dense aggregate and recycled concrete
Type
conference paper
Language
English
Original Abstract
Mechanical and deformational properties of concrete are markedly improved by the addition of long structural fibres. This addition, however, not always improves the durability of concrete. One important factor for an estimation of concrete durability is to assess the permeation and diffusion characteristics of the surface layer. The research was performed by means of the TORRENT permeability method and the method for determination of the nonsteady-state migration coefficient of chlorides in concrete – NORDTEST. The addition of long polypropylene fibres contributes to increasing the permeability of the surface layer for air and chloride solution, but no too significantly. The higher permeability was determined in concrete with concrete recyclate and polypropylene fibres. The measured results by both used methods are partially comparable and can be used for raw estimation of durability of concretes. The higher values of permeability indicate the expected lower durability of tested concretes.
Keywords
Permeation and diffusion tests, concrete recyclate, polypropylene fibres
Authors
STEHLÍK, M.; KNAPOVÁ, J.; HEŘMÁNKOVÁ, V.
Released
16. 7. 2018
Publisher
IOP Publishing
Location
Bristol
ISBN
1757-8981
Periodical
IOP Conference Series: Materials Science and Engineering
Year of study
385
Number
1
State
United Kingdom of Great Britain and Northern Ireland
Pages from
Pages to
6
Pages count
URL
http://iopscience.iop.org/article/10.1088/1757-899X/385/1/012055
Full text in the Digital Library
http://hdl.handle.net/11012/137117
BibTex
@inproceedings{BUT149585, author="Michal {Stehlík} and Jana {Stehlíková} and Věra {Heřmánková}", title="Permeation and diffusion tests for estimation of durability of fibreconcretes with dense aggregate and recycled concrete", booktitle="Construmat 2018", year="2018", journal="IOP Conference Series: Materials Science and Engineering", volume="385", number="1", pages="1--6", publisher="IOP Publishing", address="Bristol", doi="10.1088/1757-899X/385/1/012055", issn="1757-8981", url="http://iopscience.iop.org/article/10.1088/1757-899X/385/1/012055" }