Detail publikace

Characterization of old/repairing structural concrete through mechanical fracture parameters.

ŠIMONOVÁ, H. DANĚK, P. FRANTÍK, P. SEDLMAJER, M. KERŠNER, Z.

Originální název

Characterization of old/repairing structural concrete through mechanical fracture parameters.

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

Structural concrete of the building of Vítkovice railway station from 1970s and repairing concrete are characterized via mechanical fracture parameters. Together twelve 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 170/180 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 (coefficient of variation) of these parameters for old/repairing concrete were obtained as follows: E = 39.4/39.9 GPa (29/15 %), KIc = 0.90/1.38 MPa·m1/2 (19/13 %), GF = 174.0/116.4 J/m2 (26/19 %).

Klíčová slova

concrete, old/repairing, fracture parameters, core drill

Autoři

ŠIMONOVÁ, H.; DANĚK, P.; FRANTÍK, P.; SEDLMAJER, M.; KERŠNER, Z.

Vydáno

31. 8. 2017

Nakladatel

Hungarian Group of fib

Místo

Budapest

ISBN

978-963-12-9651-8

Kniha

Proceedings of the 12th Central European Congress on Concrete Engineering ‒ Innovative materials and technologies for concrete structures

Strany od

481

Strany do

486

Strany počet

6

BibTex

@inproceedings{BUT139161,
  author="Hana {Šimonová} and Petr {Daněk} and Petr {Frantík} and Martin {Sedlmajer} and Zbyněk {Keršner}",
  title="Characterization of old/repairing structural concrete through mechanical fracture parameters.",
  booktitle="Proceedings of the 12th Central European Congress on Concrete Engineering ‒ Innovative materials and technologies for concrete structures",
  year="2017",
  pages="481--486",
  publisher="Hungarian Group of fib",
  address="Budapest",
  isbn="978-963-12-9651-8"
}