Publication detail

Double-K fracture model parameters of alkali activated binders based concrete specimens.

ŠIMONOVÁ, H. TOPOLÁŘ, L. HAVLÍKOVÁ, I. ROZSYPALOVÁ, I. KUCHARCZYKOVÁ, B. KERŠNER, Z. BÍLEK, V. Jr.

Original Title

Double-K fracture model parameters of alkali activated binders based concrete specimens.

English Title

Double-K fracture model parameters of alkali activated binders based concrete specimens.

Type

conference paper

Language

en

Original Abstract

The aim of this paper is to quantify fracture parameters of two types of concrete with alkali ac-tivated binder. The beam specimens with stress concentrator were tested in three-point bending at the age 28 days and 90 days. Records of fracture tests in form load versus crack mouth open-ing displacement (P–CMOD) diagrams were evaluated using Double-K fracture model. This model constitutes two material parameters; the first is called the initiation stress intensity factor, which defines the onset of cracking, and the second the unstable fracture toughness, which de-fines the onset of unstable cracking or failure. These parameters characterize the tested materials in more details and proceed from combination of the linear fracture mechanics principles and the concept of cohesive forces acting on the faces of the fictitious (effective) crack increment. Specimen response during fracture tests was also monitored by means of acoustic emission.

English abstract

The aim of this paper is to quantify fracture parameters of two types of concrete with alkali ac-tivated binder. The beam specimens with stress concentrator were tested in three-point bending at the age 28 days and 90 days. Records of fracture tests in form load versus crack mouth open-ing displacement (P–CMOD) diagrams were evaluated using Double-K fracture model. This model constitutes two material parameters; the first is called the initiation stress intensity factor, which defines the onset of cracking, and the second the unstable fracture toughness, which de-fines the onset of unstable cracking or failure. These parameters characterize the tested materials in more details and proceed from combination of the linear fracture mechanics principles and the concept of cohesive forces acting on the faces of the fictitious (effective) crack increment. Specimen response during fracture tests was also monitored by means of acoustic emission.

Keywords

alkali activated binder, concret, fracture, double-k frature model, acoustic emission

Released

29.06.2016

Publisher

Technical University of Košice, Faculty of Civil Engineering

Location

Košice

ISBN

978-80-553-2564-4

Book

ESat 2016 ‒ 2nd Int. Conf. on Engineering Sciences and Technologies.

Edition

první

Pages from

1

Pages to

4

Pages count

4

Documents

BibTex


@inproceedings{BUT126666,
  author="Hana {Šimonová} and Libor {Topolář} and Ivana {Havlíková} and Iva {Rozsypalová} and Barbara {Kucharczyková} and Zbyněk {Keršner} and Vlastimil {Bílek}",
  title="Double-K fracture model parameters of alkali activated binders based concrete specimens.",
  annote="The aim of this paper is to quantify fracture parameters of two types of concrete with alkali ac-tivated binder. The beam specimens with stress concentrator were tested in three-point bending at the age 28 days and 90 days. Records of fracture tests in form load versus crack mouth open-ing displacement (P–CMOD) diagrams were evaluated using Double-K fracture model. This model constitutes two material parameters; the first is called the initiation stress intensity factor, which defines the onset of cracking, and the second the unstable fracture toughness, which de-fines the onset of unstable cracking or failure. These parameters characterize the tested materials in more details and proceed from combination of the linear fracture mechanics principles and the concept of cohesive forces acting on the faces of the fictitious (effective) crack increment. Specimen response during fracture tests was also monitored by means of acoustic emission.",
  address="Technical University of Košice, Faculty of Civil Engineering",
  booktitle="ESat 2016 ‒ 2nd Int. Conf. on Engineering Sciences and Technologies.",
  chapter="126666",
  edition="první",
  howpublished="electronic, physical medium",
  institution="Technical University of Košice, Faculty of Civil Engineering",
  year="2016",
  month="june",
  pages="1--4",
  publisher="Technical University of Košice, Faculty of Civil Engineering",
  type="conference paper"
}