Detail publikace

Influence of Sulphate Attack on Properties of Modified Cement Composites

YAKOVLEV, G. POLYANSKIKH, I. GORDINA, A. PUDOV, I. ČERNÝ, V. GUMENYUK, A. SMIRNOVA, O.

Originální název

Influence of Sulphate Attack on Properties of Modified Cement Composites

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Monitoring the condition of building structures based on composite materials in aggressive environments shows that the deterioration of basic properties occurs under the influence of various factors such as temperature and humidity changes, in addition to changes in the chemical composition of air environment. In addition, the composite materials during the operation must retain not only the mechanical properties laid down at the design stage, but also the electro-physical characteristics, regardless of the type of destructive effects. In the current study, the quantitative assessment of the result of the interaction of an aggressive sulphate-containing medium with composites modified with conductive and dielectric additives was carried out. The effect of sulphate attack on the specific electrical conductivity of cement composites was studied. The nature of the interaction was evaluated by changing the properties of the samples of the developed compositions under the influence of a single-normal solution of sodium sulphate. The analysis was carried out by means of potentiometric titration using the exchange interaction method by fixing the degree of absorption of sulphate ions and determining the concentration of calcium ions in the solution. The measurement of the solution potential allowed determination of the quantitative indicators of the rate of calcium hydroxide leaching from the sample structure, which is necessary to assess the intensity of the destruction process and determine the nature of the change in strength properties. Measurements of the electrical resistivity of samples under the constant influence of sulphate aggression were taken during 28 days of observation. A method for quantifying the effect of a sulphate medium on a cement matrix was proposed that enables the material durability to be predicted. The features of changes in the morphology of structural components after exposure to aggressive solution were determined by physical and chemical methods.

Klíčová slova

concretes;mechanical properties; sulphur compounds; sulphate attack resistance; impedance; electrical properties; sulphate attack

Autoři

YAKOVLEV, G.; POLYANSKIKH, I.; GORDINA, A.; PUDOV, I.; ČERNÝ, V.; GUMENYUK, A.; SMIRNOVA, O.

Vydáno

13. 9. 2021

Nakladatel

MDPI

ISSN

2076-3417

Periodikum

Applied Sciences - Basel

Ročník

11

Číslo

18

Stát

Švýcarská konfederace

Strany od

1

Strany do

13

Strany počet

13

URL

https://doi.org/10.3390/app11188509

Plný text v Digitální knihovně

http://hdl.handle.net/11012/204040

BibTex

@article{BUT176632,
  author="G.I. {Yakovlev} and Irina {Polyanskikh} and A. F. {Gordina} and Igor {Pudov} and Vít {Černý} and Alexander {Gumenyuk} and Olga {Smirnova}",
  title="Influence of Sulphate Attack on Properties of Modified Cement Composites",
  journal="Applied Sciences - Basel",
  year="2021",
  volume="11",
  number="18",
  pages="1--13",
  doi="10.3390/app11188509",
  issn="2076-3417",
  url="https://doi.org/10.3390/app11188509"
}