Publication detail

Efect of Chemical Aggressive Media on the Flexural Properties of Cured-In-Place Pipes Supported by Microstructure Observation and Acoustic Emission

HODUL, J. MAJEROVÁ, J. DROCHYTKA, R. DVOŘÁK, R. TOPOLÁŘ, L. PAZDERA, L.

Original Title

Efect of Chemical Aggressive Media on the Flexural Properties of Cured-In-Place Pipes Supported by Microstructure Observation and Acoustic Emission

Type

journal article in Web of Science

Language

English

Original Abstract

The cured-in-place pipe (CIPP) method is currently the most frequently used approach for the renovation of piping without digging; this technology is suitable for pipes made from all types of material. The authors of this paper examined how chemical substances and increased temperature change samples of CIPP with vinyl-ester resin taken from a simulated installation. Changes were observed at several levels: visually via a digital optical microscope, through changes of short-term bending properties and by observation of the activity of the sample structure by means of acoustic emission (AE). Interdependencies among the observed parameters were examined, specifically, the cumulative number of hits (cnt)/deflection and flexural properties/mechanic wave velocity. The test results prove that after three weeks of immersion in a simulated aggressive environment that mirrors what may happen to CIPP in real conditions, short-term mechanical properties change. This is also proven by the results of the AE measurements. For clarity, the results include images from a digital optical microscope. In addition, this paper proves that CIPP samples have good resistance to the action of organic and inorganic acids and to increased temperatures. After three weeks of exposure to a temperature of 100 °C the CIPP flexural properties of the samples had even improved.

Keywords

cured-in-place pipe (CIPP); chemical stress; microstructure; acoustic emission; flexural properties; thermal exposure

Authors

HODUL, J.; MAJEROVÁ, J.; DROCHYTKA, R.; DVOŘÁK, R.; TOPOLÁŘ, L.; PAZDERA, L.

Released

8. 7. 2020

Publisher

MDPI

ISBN

1996-1944

Periodical

Materials

Year of study

13

Number

14

State

Swiss Confederation

Pages from

1

Pages to

17

Pages count

17

URL

https://www.mdpi.com/1996-1944/13/14/3051

Full text in the Digital Library

http://hdl.handle.net/11012/193400

BibTex

@article{BUT164483,
  author="Jakub {Hodul} and Jana {Majerová} and Rostislav {Drochytka} and Richard {Dvořák} and Libor {Topolář} and Luboš {Pazdera}",
  title="Efect of Chemical Aggressive Media on the Flexural Properties of Cured-In-Place Pipes Supported by
Microstructure Observation and Acoustic Emission",
  journal="Materials",
  year="2020",
  volume="13",
  number="14",
  pages="1--17",
  doi="10.3390/ma13143051",
  issn="1996-1944",
  url="https://www.mdpi.com/1996-1944/13/14/3051"
}