Publication result detail

Tentative Characterization of Old Structural Concrete through Mechanical Fracture Parameters

ŠIMONOVÁ, H.; DANĚK, P.; FRANTÍK, P.; KERŠNER, Z.; VESELÝ, V.

Original Title

Tentative Characterization of Old Structural Concrete through Mechanical Fracture Parameters

English Title

Tentative Characterization of Old Structural Concrete through Mechanical Fracture Parameters

Type

Paper in proceedings (conference paper)

Original Abstract

Structural concrete of the building of Vítkovice railway station from 1970s is characterized via mechanical fracture parameters. In this paper, six core-drilled cylindrical specimens with diameter of 75 mm were provided by a Chevron type notch of depth of 12 mm. Three-point bending fracture tests were conducted on these specimens supported as beams with the span of 170 mm. Load vs. deflection and load vs. crack mouth opening displacement diagrams were recorded from which modulus of elasticity (E), fracture toughness (KIc) and fracture energy (GF) were determined using linear elastic fracture mechanics approach and work-offracture method. Mean values of these parameters (with their coefficient of variability) were obtained as follows: E = 39.4 GPa (29.1 %), KIc = 0.90 MPa·m1/2 (18.5 %), GF = 174.0 J/m2 (26.0 %). These parameters can serve as first guess or indicative values for structural assessment and life-time predictions.

English abstract

Structural concrete of the building of Vítkovice railway station from 1970s is characterized via mechanical fracture parameters. In this paper, six core-drilled cylindrical specimens with diameter of 75 mm were provided by a Chevron type notch of depth of 12 mm. Three-point bending fracture tests were conducted on these specimens supported as beams with the span of 170 mm. Load vs. deflection and load vs. crack mouth opening displacement diagrams were recorded from which modulus of elasticity (E), fracture toughness (KIc) and fracture energy (GF) were determined using linear elastic fracture mechanics approach and work-offracture method. Mean values of these parameters (with their coefficient of variability) were obtained as follows: E = 39.4 GPa (29.1 %), KIc = 0.90 MPa·m1/2 (18.5 %), GF = 174.0 J/m2 (26.0 %). These parameters can serve as first guess or indicative values for structural assessment and life-time predictions.

Keywords

Structural concrete; core-drilled samples; cylindrical specimen; Chevron notch; fracture test; mechanical fracture parameter

Key words in English

Structural concrete; core-drilled samples; cylindrical specimen; Chevron notch; fracture test; mechanical fracture parameter

Authors

ŠIMONOVÁ, H.; DANĚK, P.; FRANTÍK, P.; KERŠNER, Z.; VESELÝ, V.

RIV year

2018

Released

02.06.2017

Publisher

Elsevier

Location

Netherlands

Book

Procedia Engineering: Structural and Physical Aspects of Construction Engineering

ISBN

1877-7058

Periodical

Procedia Engineering

Volume

109

State

United Kingdom of Great Britain and Northern Ireland

Pages from

414

Pages to

418

Pages count

5

URL

http://www.sciencedirect.com/science/article/pii/S1877705817324979

Full text in the Digital Library

http://hdl.handle.net/11012/69355

BibTex

@inproceedings{BUT136760,
  author="Hana {Šimonová} and Petr {Daněk} and Petr {Frantík} and Zbyněk {Keršner} and Václav {Veselý}",
  title="Tentative Characterization of Old Structural Concrete through Mechanical Fracture Parameters",
  booktitle="Procedia Engineering: Structural and Physical Aspects of Construction Engineering",
  year="2017",
  journal="Procedia Engineering",
  volume="109",
  pages="414--418",
  publisher="Elsevier",
  address="Netherlands",
  doi="10.1016/j.proeng.2017.05.357",
  url="http://www.sciencedirect.com/science/article/pii/S1877705817324979"
}

Documents

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