Detail publikace

Advanced Evaluation of the Freeze–Thaw Damage of Concrete Based on the Fracture Tests

KUCHARCZYKOVÁ, B. ŠIMONOVÁ, H. KOCÁB, D. TOPOLÁŘ, L.

Originální název

Advanced Evaluation of the Freeze–Thaw Damage of Concrete Based on the Fracture Tests

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

This paper presents the results of an experimental program aimed at the assessment of the freeze–thaw (F–T) resistance of concrete based on the evaluation of fracture tests accompanied by acoustic emission measurements. Two concretes of similar mechanical characteristics were manufactured for the experiment. The main difference between the C1 and C2 concrete was in the total number of air voids and in the A300 parameter, where both parameters were higher for C1 by about 35% and 52%, respectively. The evaluation of the fracture characteristics was performed on the basis of experimentally recorded load–deflection and load–crack mouth opening displacement diagrams using two different approaches: linear fracture mechanics completed with the effective crack model and the double-K model. The results show that both approaches gave similar results, especially if the nonlinear behavior before the peak load was considered. According to the results, it can be stated that continuous AE measurement is beneficial for the assessment of the extent of concrete deterioration, and it suitably supplements the fracture test evaluation. A comparison of the results of fracture tests with the resonance method and splitting tensile strength test shows that all testing methods led to the same conclusion, i.e., the C1 concrete was more F–T-resistant than C2. However, the fracture test evaluation provided more detailed information about the internal structure deterioration due to the F–T exposure.

Klíčová slova

freeze–thaw; fracture; toughness; energy; double-K; crack extension; crack opening; acoustic emission; RMS

Autoři

KUCHARCZYKOVÁ, B.; ŠIMONOVÁ, H.; KOCÁB, D.; TOPOLÁŘ, L.

Vydáno

25. 10. 2021

Nakladatel

MDPI

Místo

Switzerland

ISSN

1996-1944

Periodikum

Materials

Ročník

14

Číslo

21

Stát

Švýcarská konfederace

Strany od

1

Strany do

22

Strany počet

22

URL

https://www.mdpi.com/1996-1944/14/21/6378

Plný text v Digitální knihovně

http://hdl.handle.net/11012/201798

BibTex

@article{BUT172880,
  author="Barbara {Kucharczyková} and Hana {Šimonová} and Dalibor {Kocáb} and Libor {Topolář}",
  title="Advanced Evaluation of the Freeze–Thaw Damage of Concrete Based on the Fracture Tests",
  journal="Materials",
  year="2021",
  volume="14",
  number="21",
  pages="1--22",
  doi="10.3390/ma14216378",
  issn="1996-1944",
  url="https://www.mdpi.com/1996-1944/14/21/6378"
}