Comparison of the effect of different additives on acoustic emission parameters obtained during three-point bending tests of alkali-activated slag composites

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F19%3APU132630" target="_blank" >RIV/00216305:26110/19:PU132630 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S1350630718313591" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1350630718313591</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.engfailanal.2019.07.031" target="_blank" >10.1016/j.engfailanal.2019.07.031</a>

Result language
angličtina
Original language name
Comparison of the effect of different additives on acoustic emission parameters obtained during three-point bending tests of alkali-activated slag composites
Original language description
The development of failure in quazi-brittle materials is associated with the formation of microcracks, which is followed by the release of energy in the form of elastic ultrasonic waves. The acoustic emission method is an effective non-destructive method for the detection and determination of different damage mechanisms not only in composite materials. This experimental work presents results from the acoustic emission measurements obtained during three-point bending tests without the central notch on alkali-activated materials with various additives. The acoustic emission activity was monitored using piezoelectric sensors, and the way of damage based on parameters of acoustic emission signals was investigated. The preliminary results showed that the addition of carbon black significantly reduced the maximal stress, whereas the addition of graphite increased the brittleness of the alkali-activated material. The higher brittleness is determined by the lower number of overshoots of acoustic emission signals before the fracture of the specimens.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20101 - Civil engineering

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
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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