Detail publikačního výsledku

Tentative characterization of old structural concrete through mechanical fracture parameters.

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

Originální název

Tentative characterization of old structural concrete through mechanical fracture parameters.

Anglický název

Tentative characterization of old structural concrete through mechanical fracture parameters.

Druh

Abstrakt

Originální abstrakt

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-of-fracture 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.

Anglický abstrakt

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-of-fracture 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.

Klíčová slova

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

Klíčová slova v angličtině

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

Autoři

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

Rok RIV

2017

Vydáno

08.11.2016

Místo

Košice

ISBN

978-80-553-2643-6

Kniha

SPACE 2016

Strany od

1

Strany do

2

Strany počet

2

BibTex

@misc{BUT129735,
  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="SPACE 2016",
  year="2016",
  pages="1--2",
  address="Košice",
  isbn="978-80-553-2643-6",
  note="Abstract"
}