Mechanical fracture parameters of concrete drillcore specimens supported by a slenderness ratio study
Identifikátory výsledku
Kód výsledku v 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>
Nalezeny alternativní kódy
RIV/00216305:26110/21:PU142740
Výsledek na webu
<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>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Mechanical fracture parameters of concrete drillcore specimens supported by a slenderness ratio study
Popis výsledku v původním jazyce
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.
Název v anglickém jazyce
Mechanical fracture parameters of concrete drillcore specimens supported by a slenderness ratio study
Popis výsledku anglicky
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.
Klasifikace
Druh
D - Stať ve sborníku
CEP obor
—
OECD FORD obor
20501 - Materials engineering
Návaznosti výsledku
Projekt
—
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2021
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název statě ve sborníku
IOP Conference Series: Materials Science and Engineering
ISBN
—
ISSN
1757-899X
e-ISSN
—
Počet stran výsledku
15
Strana od-do
012042
Název nakladatele
IOP Publishing
Místo vydání
Bristol
Místo konání akce
High Tatras
Datum konání akce
13. 10. 2021
Typ akce podle státní příslušnosti
EUR - Evropská akce
Kód UT WoS článku
—