Publication result detail

Microstructural changes of fine-grained concrete exposed to a sulfate attack

VYŠVAŘIL, M.; BAYER, P.; ROVNANÍKOVÁ, M.

Original Title

Microstructural changes of fine-grained concrete exposed to a sulfate attack

English Title

Microstructural changes of fine-grained concrete exposed to a sulfate attack

Type

WoS Article

Original Abstract

This paper is focused on the sulfate attack on fine-grained concrete where the effect of a 0.5 % sulfuric-acid solution on the microstructural changes of various types of concrete after a treatment for a period of 6 months was investigated with mercury intrusion porosimetry and scanning electron microscopy. It was found that the total porosity of most samples was decreased after the sulfate attack, indicated by the products of the sulfate corrosion filling in the pores of the concrete. The smallest changes in the micro- structure were observed in the samples made from sulfate-resisting cements. The formation of the locations rich in sulfur, iron and aluminum during the sulfate attack of the concrete was determined by mapping the chemical-element distribution.

English abstract

This paper is focused on the sulfate attack on fine-grained concrete where the effect of a 0.5 % sulfuric-acid solution on the microstructural changes of various types of concrete after a treatment for a period of 6 months was investigated with mercury intrusion porosimetry and scanning electron microscopy. It was found that the total porosity of most samples was decreased after the sulfate attack, indicated by the products of the sulfate corrosion filling in the pores of the concrete. The smallest changes in the micro- structure were observed in the samples made from sulfate-resisting cements. The formation of the locations rich in sulfur, iron and aluminum during the sulfate attack of the concrete was determined by mapping the chemical-element distribution.

Keywords

sulfate attack; porosity; microstructure; ettringite; gypsum

Key words in English

sulfate attack; porosity; microstructure; ettringite; gypsum

Authors

VYŠVAŘIL, M.; BAYER, P.; ROVNANÍKOVÁ, M.

RIV year

2016

Released

16.11.2015

ISBN

1580-2949

Periodical

Materiali in Tehnologije

Volume

49

Number

6

State

Republic of Slovenia

Pages from

883

Pages to

888

Pages count

5

BibTex

@article{BUT118451,
  author="Martin {Vyšvařil} and Patrik {Bayer} and Markéta {Rovnaníková}",
  title="Microstructural changes of fine-grained concrete exposed to a sulfate attack",
  journal="Materiali in Tehnologije",
  year="2015",
  volume="49",
  number="6",
  pages="883--888",
  doi="10.17222/mit.2014.138",
  issn="1580-2949"
}