Mechanical fracture parameters of concrete drillcore specimens supported by a slenderness ratio study

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F21%3A00564663" target="_blank" >RIV/68378297:_____/21:00564663 - isvavai.cz</a>

Alternative codes found

RIV/00216305:26110/21:PU142740

Result on the web

<a href="http://dx.doi.org/10.1088/1757-899X/1209/1/012042" target="_blank" >http://dx.doi.org/10.1088/1757-899X/1209/1/012042</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1757-899X/1209/1/012042" target="_blank" >10.1088/1757-899X/1209/1/012042</a>

Result language

angličtina

Original language name

Mechanical fracture parameters of concrete drillcore specimens supported by a slenderness ratio study

Original language description

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.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20501 - Materials engineering

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

IOP Conference Series: Materials Science and Engineering

ISBN

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ISSN

1757-899X

e-ISSN

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Number of pages

15

Pages from-to

012042

Publisher name

IOP Publishing

Place of publication

Bristol

Event location

High Tatras

Event date

Oct 13, 2021

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

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