Characterization of old/repairing structural concrete through mechanical fracture parameters.

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F17%3APU124577" target="_blank" >RIV/00216305:26110/17:PU124577 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Characterization of old/repairing structural concrete through mechanical fracture parameters.
Original language description
Structural concrete of the building of Vítkovice railway station from 1970s and repairing concrete are characterized via mechanical fracture parameters. Together twelve core-drilled cylindrical specimens with diameter of 75 mm were provided by a Chevron type notch of depth of 12 mm. Three-point bending fracture tests were conducted on these specimens supported as beams with the span of 170/180 mm. Load vs. deflection and load vs. crack mouth opening displacement diagrams were recorded from which modulus of elasticity (E), fracture toughness (KIc) and fracture energy (GF) were determined using linear elastic fracture mechanics approach and work-of-fracture method. Mean values (coefficient of variation) of these parameters for old/repairing concrete were obtained as follows: E = 39.4/39.9 GPa (29/15 %), KIc = 0.90/1.38 MPa m1/2 (19/13 %), GF = 174.0/116.4 J/m2 (26/19 %).
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of the 12th Central European Congress on Concrete Engineering - Innovative materials and technologies for concrete structures
ISBN
978-963-12-9651-8
ISSN
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e-ISSN
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Number of pages
6
Pages from-to
481-486
Publisher name
Hungarian Group of fib
Place of publication
Budapest
Event location
Tokaj
Event date
Aug 31, 2017
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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