Publication detail

Properties of concrete intended for further testing measured by the Impact-Echo and the ultrasonic pulse method

KAREL, O. DVOŘÁK, R. ROZSYPALOVÁ, I. SCHMID, P.

Original Title

Properties of concrete intended for further testing measured by the Impact-Echo and the ultrasonic pulse method

Type

conference paper

Language

English

Original Abstract

The aim of the paper is non-destructive measurement of differently degraded specimens by high temperature intended for further testing of joints of stainless steel helical reinforcement glued into the groove and differently degraded concrete. Measurement intended for determination of possibilities of estimation of future properties of named joints is performed by the Impact-Echo method and by the ultrasonic pulse velocity method on specimens of dimensions 400 × 100 × 100 mm made of concrete of the C20/25 strength class degraded by different elevated temperature. Five sets of specimens were manufactured - four sets of specimens were heated in the furnace at temperatures of 400 °C, 600 °C, 800 °C and 1000 °C and one set was kept intact as reference. Specimens will be afterwards additionally strengthened at the tensile side of specimens and broken by four-point flexural strength test. The non-destructive measurement aims to evaluate the residual physical-mechanical properties of plain concrete in terms of resonance frequency of test specimen, and sound velocity in tested specimen before and after the temperature degradation. This assessment will serve as material information basis for interpretation of the expected behaviour of used helical reinforcement for a retrofitting process and the thermally damaged concrete reaction to such intervention.

Keywords

Concrete, High temperature, Impact-Echo, Ultrasonic pulse method

Authors

KAREL, O.; DVOŘÁK, R.; ROZSYPALOVÁ, I.; SCHMID, P.

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

1

Pages to

6

Pages count

6

URL

http://iopscience.iop.org/article/10.1088/1757-899X/385/1/012025

Full text in the Digital Library

http://hdl.handle.net/11012/137129

BibTex

@inproceedings{BUT148868,
  author="Ondřej {Balkanský} and Richard {Dvořák} and Iva {Čairović} and Pavel {Schmid}",
  title="Properties of concrete intended for further testing measured by the Impact-Echo and the ultrasonic pulse method",
  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/385/1/012025",
  issn="1757-8981",
  url="http://iopscience.iop.org/article/10.1088/1757-899X/385/1/012025"
}