Detail publikace

Example of Using Double-K and Double-G Fracture Model Results: Concrete with Polypropylene Fibres.

ABDULRAHMAN, A. ŠIMONOVÁ, H. HAVLÍKOVÁ, I. KERŠNER, Z.

Originální název

Example of Using Double-K and Double-G Fracture Model Results: Concrete with Polypropylene Fibres.

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

In this paper, a selected example was introduced of using Double-K fracture model results obtained from fracture test of three-point bended specimens of concrete with heavy-weight aggregates (OB) as well as light-weight aggregates (LB) with polypropylene fibres to calculate Double-G fracture model parameters. It can be concluded: (i) Resistance to initiation of stable crack propagation increased with addition of fibres in both concrete types. (ii) For heavy-weight aggregates concrete, this increase was about 10 to 20 % of relative initiation fracture toughness and 20 to 40 % of relative initiation fracture energy release, concrete with fibre length of 38 mm (OB_FF38) showed the highest increase. (iii) For light-weight aggregates concrete, this increase was about 40 to 90 % of relative initiation fracture toughness and 100 to nearly 300 % of relative initiation fracture energy release; in this case, concrete with fibre length of 54 mm (LB_FF54) showed the highest increase. (iv) Double-G fracture model compared to Double-K fracture model predicts substantially lower resistance to stable crack propagation for both types of concrete; relative resistance to initiation of stable crack propagation (G_IC^ini/G_IC^un to K_IC^ini/K_IC^un ratio) was approximately between 40 and 50 % in heavy-weight aggregates concrete and between 20 to 40 % in light-weight aggregates concrete.

Klíčová slova

Concrete, Polypropylene Fibres, Double-K Fracture Model, Double-G Fracture Model, Three-Point Bending Fracture Test.

Autoři

ABDULRAHMAN, A.; ŠIMONOVÁ, H.; HAVLÍKOVÁ, I.; KERŠNER, Z.

Vydáno

28. 1. 2016

Nakladatel

Vysoké učení technické v Brně, Fakulta stavební

Místo

Brno

ISBN

978-80-214-5311-1

Kniha

Sborník příspěvků konference Juniorstav 2016

Strany od

1

Strany do

5

Strany počet

5

BibTex

@inproceedings{BUT121272,
  author="Alaa {Abdulrahman} and Hana {Šimonová} and Ivana {Havlíková} and Zbyněk {Keršner}",
  title="Example of Using Double-K and Double-G Fracture Model Results: Concrete with Polypropylene Fibres.",
  booktitle="Sborník příspěvků konference Juniorstav 2016",
  year="2016",
  pages="1--5",
  publisher="Vysoké učení technické v Brně, Fakulta stavební",
  address="Brno",
  isbn="978-80-214-5311-1"
}