Publication detail

Mechanical fracture parameters of concrete drill-core specimens supported by a slenderness ratio study

LISZTWAN, D. KUMPOVÁ, I. DANĚK, P. FRANTÍK, P. KERŠNER, Z.

Original Title

Mechanical fracture parameters of concrete drill-core specimens supported by a slenderness ratio study

Type

article in a collection out of WoS and Scopus

Language

English

Original Abstract

The detailed analytical and experimental investigation of the fracture behaviour of quasi-brittle materials is an endeavour which has been ongoing worldwide for many years. Such materials are usually characterized in terms of their mechanical fracture parameters, which are determined based on the evaluation of quasi-static fracture experiments. One of the most commonly used building materials with a quasi-brittle response is concrete, which is most often based on a cement matrix. It is sometimes also necessary to characterize concrete included in existing structures. In this case, test specimens are obtained by core drilling, and the investigation is conducted with the requirement to maximize the number of parameters obtained while minimizing the number of test specimens drilled from the structure. This paper focuses on the mechanical fracture parameters of core-drilled specimens taken from a selected concrete structure. Tests were performed on cylindrical specimens with a chevron-notched stress concentrator in the three-point bending configuration in order to determine modulus of elasticity, fracture toughness and fracture energy. Subsequently, theoretical compressive strength was estimated and tests for the determination of compressive strength values were performed focusing on dependence on the slenderness ratio, i.e. the relationship between the compressive strength and the length to diameter ratio of the cylindrical specimens. In relation to the obtained mechanical fracture parameters, selected specimens were analysed and three-dimensionally characterized via high-resolution X-ray computed tomography.

Keywords

concrete drill-core;fracture parameters;compressive strength;slenderness ratio;X-ray computed tomography

Authors

LISZTWAN, D.; KUMPOVÁ, I.; DANĚK, P.; FRANTÍK, P.; KERŠNER, Z.

Released

21. 12. 2021

Publisher

IOP Publishing Ltd

ISBN

1757-899X

Periodical

IOP Conference Series: Materials Science and Engineering

Year of study

1209

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

16

Pages count

16

URL

https://iopscience.iop.org/issue/1757-899X/1209/1

Full text in the Digital Library

http://hdl.handle.net/11012/203291

BibTex

@inproceedings{BUT175574,
  author="Dominik {Lisztwan} and Ivana {Kumpová} and Petr {Daněk} and Petr {Frantík} and Zbyněk {Keršner}",
  title="Mechanical fracture parameters of concrete drill-core specimens supported by a slenderness ratio study",
  booktitle="IOP Conference Series: Materials Science and Engineering",
  year="2021",
  journal="IOP Conference Series: Materials Science and Engineering",
  volume="1209",
  pages="1--16",
  publisher="IOP Publishing Ltd",
  doi="10.1088/1757-899X/1209/1/012042",
  issn="1757-899X",
  url="https://iopscience.iop.org/issue/1757-899X/1209/1"
}