Detail publikačního výsledku

Permeation and diffusion tests for estimation of durability of fibreconcretes with dense aggregate and recycled concrete

STEHLÍK, M.; KNAPOVÁ, J.; HEŘMÁNKOVÁ, V.

Originální název

Permeation and diffusion tests for estimation of durability of fibreconcretes with dense aggregate and recycled concrete

Anglický název

Permeation and diffusion tests for estimation of durability of fibreconcretes with dense aggregate and recycled concrete

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova

Permeation and diffusion tests, concrete recyclate, polypropylene fibres

Klíčová slova v angličtině

Permeation and diffusion tests, concrete recyclate, polypropylene fibres

Autoři

STEHLÍK, M.; KNAPOVÁ, J.; HEŘMÁNKOVÁ, V.

Rok RIV

2019

Vydáno

16.07.2018

Nakladatel

IOP Publishing

Místo

Bristol

Kniha

Construmat 2018

ISSN

1757-8981

Periodikum

IOP conference series. Materials science and engineering

Svazek

385

Číslo

1

Stát

Spojené království Velké Británie a Severního Irska

Strany od

1

Strany do

6

Strany počet

6

URL

http://iopscience.iop.org/article/10.1088/1757-899X/385/1/012055

Plný text v Digitální knihovně

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"
}