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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.
Type
conference paper
Language
English
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.
Keywords
alkali activated binder, concret, fracture, double-k frature model, acoustic emission
Authors
ŠIMONOVÁ, H.; TOPOLÁŘ, L.; HAVLÍKOVÁ, I.; ROZSYPALOVÁ, I.; KUCHARCZYKOVÁ, B.; KERŠNER, Z.; BÍLEK, V. Jr.
Released
29. 6. 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
BibTex
@inproceedings{BUT126666, author="Hana {Šimonová} and Libor {Topolář} and Ivana {Havlíková} and Iva {Čairović} and Barbara {Kucharczyková} and Zbyněk {Keršner} and Vlastimil {Bílek}", title="Double-K fracture model parameters of alkali activated binders based concrete specimens.", booktitle="ESat 2016 ‒ 2nd Int. Conf. on Engineering Sciences and Technologies.", year="2016", series="první", pages="1--4", publisher="Technical University of Košice, Faculty of Civil Engineering", address="Košice", isbn="978-80-553-2564-4" }